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Additives annual '92.

pigments. A nondripping UL94 V-0 down to 1/64-in thickness was achieved with a formulation of 16% Dechlorane Plus, 2% antimony oxide, and 4% zinc borate vs. the previous 20% Dechlorane Plus with 10% antimony oxide formula. The same result was achieved with 1.5% iron oxide (any color), 1.5% zinc borate, and 12% Dechlorane Plus.

Good results have been reported using Alcan Flamtard S instead of antimony oxide as a cosynergist with zinc borate to flame retard nylon 66 using Dechlorane Plus. A mixture of 14% Dechlorane Plus, 4% zinc borate, and 2% Flamtard S gave a UL 94V-0 down to 1/32-in with a CTI of 500 volts. Occidental Look for the plastics additives industry to enjoy continued, though somewhat slower, growth over the next few years. That is the conclusion of several recent reports on the state of the market. The U.S. Market for Plastics Additives, for example, a study by Frost & Sullivan International of New York City, projects that between 1991 and 1996, sales will grow from $1.12 to $1.33 billion, an 18% increase, representing a rise in volume from 893.4 million to 1.06 billion lbs. Flame retardants, by far the largest category, may expect to expand in sales by 21% in that period, according to the study; and light stabilizers will show the greatest advance, 28%.

Here's what some seventy firms have reported to PE on their recent doings.

Air Products and Chemicals

X2-5374 and X2-5454 are two new silicone surfactants for use in hydrochlorofluorocarbon (HCFC)-blown and HCFC/waterco-blown rigid polyurethane foam systems. The still-experimental products are said to produce finer-celled foams with higher R values than foams obtained with conventional surfactants, thereby compensating for the loss in R value that usually occurs with HCFC-blown foams. The surfactants were also found to provide pour-in-place and laminate polyurethane formulations with excellent flowability during processing.

Two other new products for polyurethane foams are Dabco 1538 surfactant, a high-efficiency additive for flexible slabstock systems, and Dabco XFG-1402, a metal-based catalyst for molded systems. Surfynol surfactants are now recommended for waterborne wood-coating finishes, where they are said to provide improved flow and leveling, improved substrate wetting and intercoat adhesion, reduced water sensitivity, and rapid displacement of air bubbles. Their low surface tension properties make them particularly useful in spray-applied coatings. Air Products and Chemicals, Inc., 7201 Hamilton Blvd., Allentown, PA 18195-1501; (800) 345-3148.

Akzo

Akzo has expanded its Interstab line of non-cadmium stabilizers. Five of the new products are barium-zinc liquids. BZ-4825 is a moderately lubricating stabilizer for opaque calendered vinyls that is said to exhibit excellent long-term dynamic stability, printability, heat sealing characteristics, and color control in filled/pigmented applications. BZ-4828A is a moderately lubricating product for clear and lightly filled calendered and extruded vinyls that is said to show exceptional long-term dynamic performance without boosters, and good early and mid-term color control in many formulations.

Interstab BZ-4836 is an ultrahigh efficiency liquid for the production of crisp whites without a yellow cast, as well as all opaque applications. Recommended use levels are 10% to 15% lower than for other high-efficiency barium zincs. BZ-4838 is a universal stabilizer, formulated to give a wide processing "window," and said to provide well-balanced performance in many processes and formulations, from highly pigmented to general-purpose clears. BZ-4845 is a barium-zinc phosphite for clear blown-film packaging products, said to provide exceptional clarity and permanence, and excellent performance over a wide range of durometers without requiring the addition of a phosphite chelator.

Interstabs BZ-4847 and BZ-4848 are powdered barium-zinc stabilizers. BZ-4847 is intended for the wire and cable markets, and has shown promise in initial tests as a sole stabilizer in many wire applications. BZ-4848 can be used alone, in conjunction with a barium-zinc, or as a solid booster to provide extra lubricity or heat stability. Initial trials are under way.

Interstab CAZ-4842 is a non-FDA liquid calcium-zinc phosphite for a variety of high-quality plastisol and dipping operations. It is said to exhibit the crisp early color and viscosity-control properties across the wide range of processing temperatures and dwell times required for rotomolding playballs and similar products.

Stanclere T-4817 and T-4851 are new tin stabilizers. T-4817 is said to provide good long-term heat stability, easy processing, and excellent weatherability in rigid, weatherable PVC applications having white to medium pastel colors such as siding, window profiles, guttering, and downspouts. T-4851 is said to offer good long-term heat stability and clarity, and low odor in applications such as flooring and wallcovering topcoats. Akzo Chemicals Inc., 1 Livingstone Ave., Dobbs Ferry, NY 10522; (914) 693-1200; Fax (914) 693-1758.

Alcan Chemicals

Onyx Premier is a new high purity, organic-free alumina trihydrate that is said to display excellent whiteness and translucency characteristics. It is compatible with polyester, acrylic, and other resin systems, and is used as a flame retardant, smoke suppressant and filler in a variety of plastic applications. It is also used in the production of cultured onyx. Alcan Chemicals Division, Alcan Aluminum, 3690 Orange Pl., Suite 400, Cleveland, OH 44122; (800) 321-3864; Fax (216) 765-2550.

Amerihaas

Amerihaas--the joint marketing venture of Ameribrom, Inc., and Rohm and Haas Co.--has recently introduced several products.

Paraloid EXL-5137, a surface modifier designed to reduce the gloss of engineering plastics, is an all-acrylic additive that was developed to meet demands for a matte look in automotive interior parts and electrical/electronic housings. Reflectance values were said to be significantly lowered in tests conducted on ABS, polycarbonate (PC), and ABS/PC blends.

Also new is Paraloid EXL-4140, an acrylic imide copolymer used to compatibilize nylon 6 with ABS or PC. The additive is reactive with nylon 6 and compatible with PC; it is partially miscible with ABS. A related product is EXL-4151, a polyglutarimide copolymer compatibilizer that, Amerihaas reports, demonstrates a synergistic reaction, resulting in nylon 6/PC blends with an improved balance of properties--compared with either material when unmodified.

Paraloid EXL-3611 is a reactive MBS toughener for imparting low temperature strength without loss of stiffness in nylon. EXL-5375 is a toughener concentrate for CPET; the company sees a likely application in microwaveable polyester trays.

New flame retardant additives include the F-2000 Series of brominated epoxies for engineering thermoplastics. The company says that these polymeric products show excellent thermal stability and can be easily compounded by means of conventional methods. FR-1025 poly(pentabromobenzyl acrylate) flame retardant for engineering thermoplastics is a polymeric additive with high bromine content that also promises excellent thermal stability. FR-20 is a magnesium hydroxide nonhalogen flame retardant and smoke suppressant for plastics and rubber. Amerihaas, Independence Mall West, Philadelphia, PA 19105; (215) 592-3385 or (215) 592-3351; Fax (215) 592-2285.

Amoco Performance Products

A high-modulus commercial grade carbon fiber for use in industrial and leisure products has been introduced. Thornel T600/50C 12K fiber is produced from domestically manufactured polyacrylonitrile precursor, using the same equipment and process controls as aerospace fibers. This equipment offers the potential for higher tensile strength and higher modulus, and the use of cost-efficient techniques to manufacture the fiber in large commercial quantities allows favorable production economics. Amoco Performance Products, Inc., 375 Northridge Rd., Suite 600, Atlanta, GA 30350; (404) 512-6700.

Ampacet

A new series of concentrates designed specifically to reduce dielip buildup in high-speed, high-temperature cast film and extrusion coating has been developed using the company's Total Systems Technology (T.S.T.) approach. T.S.T. concentrates have clean formulations with significantly reduced levels of volatile processing aids and a special LDPE carrier resin containing a low-level antioxidant package for superior processability. According to the manufacturer, the specially compounded products provide enhanced dispersion, improved quality, and improved consistency. T.S.T. White Series products have a 50% to 80% Ti|O.sub.2~ content. Commercial nonwhite products include diaper blue and pink. Ampacet Corp., 660 White Plains Rd., Tarrytown, NY 10591; (914) 631-6600; Fax (914) 631-7197.

Amspec

Two new products have been added to the Amsperse line of flame retardants for textiles and nonwovens. F/R 7525 and F/R 7125, when applied by thermosol processing, are said to be effective nonpigmenting flame retardants for polyester fabrics. Amspec Chemical Corp., Foot of Water St., Gloucester City, NJ 08030; (800) 526-7732 or (609) 456-3930.

Anzon

New grades of antimony trioxide include Microfine VHP, a very high purity submicron particle-sized product for applications requiring very low levels of trace heavy metals, and Trutint 10, which has a tint strength of 10% of standard grade oxide and is designed for translucent or brightly pigmented applications. The Envirostrand and Fyrebloc high-loaded pelletized product lines now have products for all major polymer systems, and also water-dispersible Envirostrand products for latex applications. Several new products incorporate antimony with the latest bromine flame retardants from several prominent suppliers.

A new Enviroprill product line for PVC applications uses antimony oxide in a PVC carrier system. The free-flowing non-dusting prill structure provides easy dispersion. Ongard 5 is a new product that offers the same smoke-suppressant properties as Ongard 2 with improved dispersion and abrasion resistance. It is intended primarily for PVC but can be used with other resins. Anzon is now marketing the FR-CROS line of ammonium polyphosphate intumescent flame retardants produced by the Spanish Ercros Group. Anzon Inc., 2545 Aramingo Ave., Philadelphia, PA 19125; (800) 523-0882 or (215) 427-3000; Fax (215) 427-6955.

Avecor

Avecor's plant in North Kansas City, Mo., a large supplier of food and drug colorants, ceased production in November 1991 of all pigments commonly defined as "heavy metal," such as those containing cadmium and lead. All equipment has been totally refurbished to remove all traces of these pigments. Avecor's other plants will discontinue use of heavy metal pigments when industry and customer demands require such action. Avecor, Inc., Avecor Dr., Niles Ferry Industrial Park, Vonore, TN 37885; (615) 884-6625.

Baerlocher U.S.A.

Baerlocher has introduced a line of cadmium-free stabilizers for flexible and semirigid PVC. Four of these products are intended for calendering, extrusion, and injection molding applications. Baerostab UBZ 709 is a cost-efficient liquid Ba/Zn said to provide good clarity and color for wire jacketing and general-purpose flexible compounds. Baerostab UBZ 795 is a general-purpose, highly efficient liquid Ba/Zn for clear and pigmented flexible and semirigid formulations. Baerostab CT 470 B is a solid Mg/Zn stabilizer/booster to be used with liquid Ba/Zn or Ca/Zn stabilizers to improve initial color, color retention, and stability in light-pigmented formulations. Baeropan MC-KA 4 is a highly efficient solid Ca/Zn for primary wire insulation and jacketing compounds.

For compact plastisol applications, Baerostabs UBZ 632 and NT 223 are offered. UBZ 632 is a high efficiency liquid Ba/Zn for flooring topcoat and general purpose plastisols that require high heat stability. NT 223 is a liquid Ca/Zn for toys. It complies with the European standard EN 71 for toys.

Baerostabs KK 47 and L 230 are designed for foamed plastisol applications. KK 47 is a liquid K/Zn fast kicker for wall covering, artificial leather, and carpet backing. L 230 is a liquid Zn octoate kicker for general purpose applications. Baerlocher U.S.A., W. Davis St., P.O. Box 545, Dover, OH 44622; (216) 364-6000; Fax (216) 343-7025.

BASF

Palatinol 9P is a relatively new linear C9 phthalate plasticizer said to provide superior low temperature performance and reduced volatility in flexible vinyl applications in the automotive and wire and cable industries. Palatinol 9P is offered at a small price premium over Palatinol 711P and is available in full tank truck or rail car quantities. BASF uses a computer program to help customers evaluate flexible vinyl formulations containing Palatinol plasticizers. BASF Corp., Plasticizers, 100 Cherry Hill Rd., Parsippany, NJ 07054; (800) 334-1400 or (201) 334-9276; Fax (201) 316-4792.

Byk-Chemie USA

Last fall, Byk-Chemie USA received an R&D 100 Award from R&D Magazine for its new wetting and dispersion agent, BYK W-995. Developed by a research team at Byk-Chemie's international headquarters in Wesel, Germany, the product is intended for use in low-profile, low-shrink thermoset polyester; it reportedly allows the formulator to increase filler loadings while maintaining viscosity control. Byk-Chemie USA, 524 South Cherry St., Wallingford, CT 06492-7656; (203) 265-2086; Fax (203) 284-9158.

C.P. Hall

Plasthall 6-10P is a new monomeric phthalate stabilizer with a high linearity that is said to excel in those areas where linear phthalate plasticizers outperform branched ones, i.e., low temperature performance, thermal oxidative stability, efficiency, and plastisol viscosity control. C.P. Hall Co., 7300 S. Central Ave., Chicago, IL 60638; (312) 767-4600 or (708) 594-6000; Fax (708) 458-0428.

Chemax

Chemax has expanded its line of antistat and antifog agents in easy to handle, pelletized form. Chemstat AC-101 is an FDA-approved, 50%-active antistat for ABS said to provide excellent antistatic properties at a relative humidity as low as 15%. Chemstat AC-100 is used for polyethylene. Chemstat AC-1000 is a non-amine antistat that meets Mil Spec when used at low levels. Chemstat LD-100 is available in 100%-active solid form. Chemstat AF-906 is an FDA approved, antifog agent for PE film said to provide excellent antifog properties for food packaging and multiple-season performance for greenhouse films. Chemax, Inc., P.O. Box 6067, Greenville, SC 29606; (800) 334-6234 or (803) 277-7000; Fax (803) 277-7807.

Chemtech

Chemtech of California is distributing a hybrid mineral pigment called Klannerite, which is being mined in Arizona under a joint venture between Viva Luz Mine and Pfizer, Inc. Chemtech says that Klannerite silica crystals have "unique" prismatic and refractory characteristics and that the product can be used to replace or supplement titanium dioxide and as a filler and extender. The product reportedly will replace a much costlier UV-reflective material that is currently being used in vinyl plastic window frames. As a UV screener the pigment prevents the breakdown and degradation of the material to which it is added by refraction of the UV rays. Chemtech of California, Inc., P.O. Box 326, Ripon, CA 95336; (209) 599-4560; Fax (209) 599-6038.

Ciba-Geigy

Ciba-Geigy's antioxidants for polystyrene are now packaged in "process-consumable" 25-lb bags that completely dissolve during the production process--both providing convenience and relieving environmental concerns about disposal of bulky packaging. The consumable bag is made of butadiene-rubber-modified polystyrene. Inks were specially formulated so as not to affect the chemical reactions during production. The package is made by Bonar Inc., Burlington, Ont., from film provided by A.V.P. Extrusions Ltd., Newcastle, Ont. It won the first Ron Hayter Award for meritorious environmental design in plastics packaging, established in 1991 by EPIC, the Environment and Plastics Institute of Canada. Additives Division, Ciba-Geigy Corp., 7 Skyline Dr., Hawthorne, NY 10532; (800) 431-1900 or (914) 785-2223.

Irgacolor Buff 10415 is a new heat-stable pigment Brown 24 for plastics including styrenics, engineering resins, and polyolefins. The complex inorganic pigment is said to demonstrate high color strength and saturation, high opacity to hide polymer color shifts, good heat resistance in engineering plastics, and good weather resistance in polyolefin products for outdoor use. The manufacturer's tests show that Irgacolor Buff 10415 provides better heat resistance than competitive products in polycarbonate, ABS, and polyamide. Drakenfeld, Ciba-Geigy Corp., West Wylie Ave., Washington, PA 15301; (412) 223-5900.

The Pigments Division has released Cabernet, a wine-colored pigment in its Monastral line of quinacridone pigments for automotive and industrial paints and plastics. It is distinguished by its unusual bluish tones, the company says. Ciba-Geigy Pigments Division, 205 South James St., Newport, DE 19804; (800) 992-5627.

Climax

A complete line of Hydrax alumina trihydrate (ATH) is now offered, including ultrafine grades, for use as flame retardants and smoke suppressants. The manufacturer says that close control of ATH particle size results in a tight distribution that produces excellent physical characteristics in end products. Hydramax magnesium compounds, recommended for use in high temperature systems such as nylon, polypropylene, PET, and PBT, are also said to have ultrafine particle size with narrow distribution for excellent physicals. HM-B8, magnesium hydroxide, and HM-C9, magnesium-based compounds, are available in both surface-treated and untreated forms for good dispersibility. Climax Performance Materials Corp., Polymer Additives Group, 7666 W. 63rd St., Summit, IL 60501; (800) 323-3231.

Crowley

Viplex 885 has been found to be a promising low-cost extender for epoxy resins. According to the manufacturer's data, when varying levels of Viplex 885 were combined with an epoxy and cured with a modified cycloaliphatic amine and an MDA-free aromatic amine at ambient and elevated temperatures, levels as high as 20% of the resin portion still retained the physical and chemical properties of the standard system, although at the expense of slightly lower heat distortion and hardness. Crowley Chemical Co., 261 Madison Ave., New York, NY 10016; (212) 682-1200; Fax (212) 953-3487.

Cyprus

Cyprus Industrial Minerals has developed a new vacuum process to increase the handleability of low-bulk-density talc products. The process is said to reduce the stack height of a pallet of product by 50%, making it easier and safer to handle and transport. Products will bear the VP designation, such as Cimpact 699 VP and Cimpact 710 VP. Cyprus Industrial Minerals, 8985 East Nichols, Suite 300, Englewood, CO 80112; (800) 325-0299 or (303) 643-5000.

Day-Glo

STX-Pigments are a new series of formaldehyde-free fluorescent colorants. The manufacturer says that they combine excellent solvent and chemical resistance with high color intensity, and recommends them for organosol, plastisol, and other applications where solvent resistance is a factor. Day-Glo Color Corp., 4515 St. Clair Ave., Cleveland, OH 44103; (216) 391-7070.

Dexco

Dexco Polymers, a Dow/Exxon partnership, has introduced seven grades of Vector styrenic-block-copolymer polymer modifiers as the Vector 6000 series. Typical uses for these styrene-butadiene-styrene (SBS), styrene-butadiene (SB) diblock, and SB radial materials include: compatibilization of dissimilar plastic blends, both virgin and recycled resins; impact modification of styrenics and engineering thermoplastics; and performance enhancement of film properties. The new grades promise consistency and heat stability. Vector SBS grades are also available for asphalt modification and medical applications, and styrene-isoprene-styrene copolymers have found use in adhesives and sealants. Dexco Polymers, 12012 Wickchester, Houston, TX 77079; (713) 870-6352; Fax (713) 870-6732.

Dover

Two new solid phosphite stabilizers, Doverphos S-686 and S-687, were developed to overcome the hydrolytic instability of traditional distearylpentaerythritol diphosphites, and are said to flow freely even after exposure to high humidity. Both phosphites provide color and melt-flow stability during processing and synergism with UV stabilizers. S-686 and S-687 comply with many FDA regulations for food contact and food packaging, and are recommended for polyolefins, polystyrene, ABS, PVC, and polyesters.

Chlorez 700-SS, a new chlorinated flame retardant for polyolefins and polystyrene, is claimed to have the highest thermal stability of any chlorinated paraffin, enabling it to withstand higher processing temperatures. Its high melting point allows its use in flame retarding HIPS without lowering the Vicat temperature. Dover Chemical Corp., Davis at W. 15th St., P.O. Box 40, Dover, OH 44622; (800) 321-8805 or (216) 343-7711; Fax (216) 364-1579.

DSM

By improving its gel-spinning process for producing polyethylene fibers, DSM has increased by 30% the strength of its Dyneema fiber, which was already the world's strongest commercial fiber. In addition to its high specific strength, the fiber has a high specific modulus, flexibility, and low density. It is also resistant to abrasion, moisture, and chemicals, and it can withstand UV radiation. Because of its high energy absorbing power, it is recommended for protective clothing and impact-resistant materials, as well as for applications where weight reduction is at a premium. DSM, Corporate Public Relations, P.O. Box 6500, 6401 JH Heerlen, The Netherlands; (31) 45 782422; Fax (31) 45 740680.

Du Pont

Formacel Z-2, hydrofluorocarbon-152a, is a new foam expansion agent targeted for foam food packaging. It is said to provide the best balance of strength, cushioning, and smooth surface characteristics of any such HCFC, while having zero ozone depletion potential, the lowest global warming potential of any HCFC expansion agent, and zero contribution to urban smog. Du Pont has determined that Formacel Z-2 is in compliance with FDA regulations for polystyrene foam food service products and egg cartons, and is petitioning the FDA for approval for use in meat and poultry trays. Packaging suppliers have found Formacel Z-2 to be compatible with their equipment and production processes. Du Pont Co., 1007 Market St., Wilmington, DE 19898; (800) 441-7515.

Two new Viton Free Flow processing additives that are said to improve efficiency and quality in polyethylene film manufacturing have been introduced. Both products are a mixture of Viton fluoroelastomer with Teflon fluorocarbon resin. Well-dispersed fluoroelastomer particles are said to have a greater affinity for the metal die surface than for the polyolefin, and gradually coat the die surface with a "slip layer." The combination is said to improve the lubricity of the slip layer. Both additives also have reduced affinity for other additives such as antiblocks and stearates compared with other fluoroelastomer additives, improving performance. Viton TA is formulated for use with LLDPE containing talc antiblock, and permits changeover from silica to talc antiblock without increasing additive level. Viton HD is offered for HDPE, and works at the same levels as conventional fluoroelastomer additives. Du Pont Polymers; (800) 441-7330.

Elf Atochem

Elf Atochem has introduced several new products for vinyl applications. PS-1001 and Durastrength-200L are impact modifiers for use in rigid vinyl extrusions. PS-1001 combines a process aid, and Durastrength-200L is targeted for vinyl siding and window profiles, applications requiring low gloss, low die swell, and low shrinkage. PA-2283 is a weatherable additive system containing stabilizer, impact modifier, process aid, and calcium stearate for vinyl siding and window profile formulations.

Thermocels are one-pack additive systems in free-flowing powder form that use Elf Atochem's newest organotin heat stabilizer. Thermocel 2365 is designed for use in PVC foam core pipe extrusion; Thermocel 1002 for use in PVC foamed profiles, extrusion, siding, and sheet; and Thermocel 1006 for injection molding applications where it is said to provide improved impact, outdoor weathering, initial and long-term color retention, long-term stability, and melt flow.

Metablen P-570 and Metablen P-552 are new acrylic processing aids. P-570 has a low molecular weight and is designed to impart minimal die swell and decreasing equilibrium torque in extrusion applications. P-552 has a mid-range molecular weight and is said to offer good general purpose characteristics in blowmolding applications. Metablen C-301, a new high efficiency impact modifier for PVC bottles, is claimed to provide the highest oil resistance, important for the Latin American market, where high growth in oil bottles is anticipated.

Kynar polyvinylidene fluoride resin is now offered as a low cost processing aid for the extrusion of polyethylene films, particularly for LLDPE and high-molecular-weight HDPE films. Its use is said to help eliminate melt fracture and other flow-induced surface imperfections while helping to reduce extruder head pressure and extruder torque and increase throughput. Elf Atochem North America Inc., Three Parkway, Philadelphia, PA 19102; (215) 587-7000.

Elf Atochem's new organic peroxides include Lupersol 688-M50, a liquid aliphatic peroxyester initiator having a 10-hr half-life temperature of 57|degrees~F, and which provides improved kinetics and elimination of odorous decomposition products in PVC production; and Lucidol 75FP, a "super fine" grade of water-damped benzoyl peroxide used as an active constituent in acne skin creams and soaps, and as a polymerization initiator for various plastics and a curative for polyesters.

Elf Atochem has begun actively marketing Retilox F and Peroximon DC products, both acquired from Ausimont. Retilox F, a solid, semicrystalline, difunctional dialkyl peroxide, is an efficient crosslinking agent for elastomers and plastics. Peroximon products are different grades of dicumyl peroxide.

A novel series of functionalized peroxides provides more than just free radicals for initiation. One class contains both a t-amyl peroxide group and a HALS group in the same molecule. This yields both HALS group radicals and t-amyl amyloxy radicals to initiate polymerization and also become chemically bonded to the growing polymer molecule. Luchem HA-505, a HALS monoperoxycarbonate, when blended with regular t-amyl peroxides, is effective in controlling viscosity in the synthesis of low-molecular-weight acrylic coating resins. Peroxides with hydroxyl or carboxyl functionality, such as Lupersol 688-M50, are also useful in acrylic coating systems. The hydroxyl functionality ends up in the terminal position of the polymer. Elf Atochem North America, Inc., Organic Peroxides Division, 1740 Military Rd., Buffalo, NY 14240; (800) 558-5575 or (716) 877-1740; Fax (716) 877-3052.

Engelhard

Engelhard expects to add several new colors to its Meteor Plus line of complex inorganic pigments by mid-year. Thirteen colors are now available; the six added in 1991 are blue-G, antimony-free golden, teal blue, bright green, a high IR brown, and a high-strength black. The manufacturer says that they provide excellent light and heat resistance and bright, clean, intense colors in a wide range of applications. The less-than-2-micron pigment particle size and narrow size distribution are said to provide good dispersion and handling ease. Engelhard Corp., Specialty Minerals and Colors Group, 101 Wood Ave., Iselin, NJ 08830; (908) 205-6933; Fax (908) 321-0250.

Ethyl

Saytex 8010 is a new brominated flame retardant that is said to pose no environmental, worker, or consumer health risk from the formation of brominated dibenzofurans or brominated dibenzodioxins. It has flame retardance similar to that of Saytex 102E (decabrom), which will have its use restricted under proposed European regulations. Saytex BT-93, in a comparable 82 wt% bromine matrix, produces no detectable brominated dibenzodioxins and little, if any, 2,3,7,8-substituted brominated dibenzofurans on pyrolysis. It is especially recommended for use in light-colored, unpainted HIPS because of its UV stability. According to the manufacturer, a delta-E of one or less can be achieved in the 300-hr xenon arc test in combination with the proper UV stabilizers. Ethyl Corp., 451 Florida Blvd., Baton Rouge, LA 70801; (504) 388-7040; Fax (504) 388-7686.

Exxon

Jayflex L9P is a new linear phthalate plasticizer said to offer superior low temperature flexibility, high permanence, and high efficiency. It also has improved resistance to fogging, critical in applications for automotive instrument panels, molding, and trim. Jayflex L9P's high permanence and linearity lead to excellent weatherability in outdoor applications, and its high permanence and efficiency improve performance in specialty wire and cable applications. Exxon Chemical Co., Performance Products Group, P.O. Box 3272, Houston, TX 77253; (800) 526-0749 ext. 6998 or (713) 870-6998.

Ferro

The Bedford Chemical Division has introduced a series of non-cadmium liquid stabilizers (barium-zincs and calcium-zincs). Therm-Chek 134 is designed for optically clear flexible and semirigid PVC sheet and thin-gage pigmented and filled calendered PVC film. Therm-Chek 126 is a general purpose low-volatility stabilizer for clear and filled vinyl compounds. Therm-Chek 139 is a lower cost alternative to Therm-Chek 134.

The non-cadmium liquids Therm-Chek 1159 and 1169 are targeted for automotive extrusion and calendered applications requiring low fogging. This feature is achieved in both products by replacing solvents with different combinations of organic phosphites and low-fogging plasticizers.

Therm-Chek 196, 1180, and 1124 are offered for slush-molded vinyl used in automotive instrument panels; Therm-Chek 196, 1129, and 923 are offered for vinyl, ABS, and nitrite sheet; Therm-Chek PS 380 and 195 are targeted for vinyl-plastisol and slush-molded vinyl armrests; and Therm-Chek 120, 145, and 6251 can be used in extruded-vinyl body-side moldings.

UV-Chek AM 340 benzoate UV stabilizer is said to be a cost-effective alternative when synergized with benzophenone, benzotriazole, and HALS stabilizers to achieve the UV performance required to meet the 10-year color life standards for automobiles. Micro-Chek antimicrobials, available in seven different carrier systems for ease of formulation, are said to be especially effective in preventing fungal attack in outdoor applications. Bedford Chemical Division, Ferro Corp., 7050 Krick Rd., Walton Hills, OH 44146.

Pyro-Chek LM is a 66%-brominated, low-molecular-weight polystyrene flame retardant that is soluble in polystyrene at loadings to 15%. The company says that it produces no polybrominated dibenzodioxins or dibenzofurans (below ppb levels of detection) either by itself or when compounded into HIPS. Keil Chemical Division, Ferro Corp., 3000 Sheffield Ave., Hammond, IN 46320.

V-9415 from Ferro's Color Division is a strong, bright yellow nickel titanate pigment said to provide weatherability, chemical resistance, processability, lightfastness, heat stability, and lot-to-lot consistency. When combined with selected organic pigments, it can replace many lead- and cadmium-bearing colors. The Color Division is also supplying a line of ultramarine pigments (blues and violets) manufactured in Spain by Nubiola S.A. The insoluble inorganic compounds are considered non-toxic and meet FDA guidelines for food-contact applications.

A series of chemically inert complex inorganic color pigments for rigid PVC siding and window profiles are said to provide excellent weatherability and lightfastness. V-777 and V-791 infrared-reflecting pigments minimize heat buildup when used as tinting blacks. V-9186 and V-9187 are iron-free browns compatible with rigid PVC. V-9229 cobalt titanate blue and F-5686 turquoise offer chromaticity to match gray-blue shades. Color Division, Ferro Corp., 4150 East 56th St., Cleveland, OH 44105.

A line of color concentrates that provides a "granite" or stone-like appearance are now being used in a wide variety of applications (including food contact), with base polymers ranging from polyolefins to specialty thermoplastics. Offered in a standard pellet form, they can be used with little or no change to existing processing parameters. Plastic Colorants & Dispersions Division, Ferro Corp., 103 Railroad Ave., Stryker, OH 43557.

Spectraflo HMF liquid colorants for engineering and other plastics are introduced at the feed throat in molding and extrusion applications. Ferro's SpectraCheck System automatically calculates color tolerances from histories of accepted and rejected colors. Plastic Colorants & Dispersions Division, Ferro Corp., 1425 South Wright Blvd., Schaumburg, IL 60193.

FMC Corp.

Available only in Europe, Reogard STG is a new antismoke compound for flexible polyurethane foam used in furniture. FMC says that the product offers a new approach to the control of smoke and toxic gases that is aimed at the post-ignition phase, said to be the main cause of fatalities in fires. Tests on Reogard STG found it to reduce both levels of smoke and the amounts of toxic gases emitted. In use, the product reacts with the foam, so it is not volatile, does not migrate, and cannot be extracted from the foam. It contains no halogens, and acts in part by increasing the char formation of the foam and by reducing the amount of liquid melt that drips from the foam. FMC has not announced any plans to market Reogard STG in the U.S.

FMC Corp.'s Process Additives Division was acquired from Ciba-Geigy in February. In Europe: FMC Corp. Process Additives Division, Tenax Road, Trafford Park, Manchester, M17 1WT England; Phone 44-061-872-2323. In U.S.: FMC Corp. Phosphorus Chemicals Division, 1735 Market St., Philadelphia, PA 19103; (215) 299-6385.

Geltech

Geltech's proprietary sol-gel process produces ultrapure, spherical silica powders having particle diameters ranging from 0.5 to 1.5 microns and a typical size distribution of |+ or -~10%. Tests show greater than 99.9% purity with very low alpha emissions. The powders are ultra-uniform and monosized and are offered in densities of 1.7 to 2.2 g/cc. Products provide good flowability, and silica's low coefficient of thermal expansion suppresses crack formation, providing good heat stability. The products are recommended for permeation and diffusion applications, as a high purity filler for composites, and as standards for measurement systems. Geltech, Inc., Two Innovation Dr., Alachua, FL 32615; (800) 323-6595 or (904) 462-2358; Fax (904) 462-2993.

George Mann

The new Aqualease 2802 water-based mold release agent is said to eliminate break-in problems common to water-based release agents. Its proprietary emulsion prevents sticking problems often experienced during the first few cycles as a result of urethane buildup on the mold surface. The need to "season" molds with other substances such as silicone greases is also eliminated, leading to faster start-up times. Aqualease 2802 can be sprayed, brushed, or wiped on the mold, and is available in 1- and 5-gal containers and 55-gal drums. George Mann & Co., Inc., Formulated Products Division, P.O. Box 9066, Providence, RI 02940; (401) 461-2340; Fax (401) 941-0830.

GE Specialty Chemicals

The Blendex HPP (High Performance Polymer) line of powdered engineering resins used to modify other polymers has been expanded. Benefits reported using Blendex HPP PPE polyphenylene ether polymers to modify other miscible polymers include improved heat resistance in recycled styrenics and structural and hot melt adhesives; and improved tensile strength, heat resistance, and electrical properties in epoxies. Blendex HPP PC polycarbonates can be used as color concentrate carriers for better pigment dispersion, and to upgrade heat and impact performance of other polymers.

Blendex 340 ABS impact modifier resin was specially designed for the vinyl siding substrate market. It is said to offer better toughness, especially at low temperatures, than other modifiers on the market. It is also more efficient than acrylic modifiers, allowing products to fuse faster, and thereby reducing formulation costs by requiring less process aid and internal lubricant. Blendex 590 process aid for this market is said to provide the highest melt strength and can be used at levels 70% lower than acrylic process aids.

Ultranox 815A, 817A, 875A, and 877A are recently introduced blends of Ultranox 210 and 276 primary phenolic antioxidants with Ultranox 626 phosphite secondary antioxidant. The blends are said to provide better stabilization at lower loading levels than other blends on the market, and because they are free-flowing solids with controlled particle size, handling is easier and dust is minimized.

Use of non-CFC blowing agents in polyurethane flexible foam manufacture may result in higher foaming temperatures, requiring improved antioxidant stabilization. The company's tests show that Weston PDDP and DPDP phosphites provide better bun scorch protection for better bun interior color, even in fire-retardant foams having more severe discoloration problems. Weston TNPP and 399 phosphites have received ISO 9002 registration, and have a new color specification of 100 max. on the Pt-Co scale, said to be significantly better than other commercial grades. Weston TNPP and 399 phosphites are used in such polymers as ABS, elastomers, PE, and food grade PVC to improve color and molecular weight stability during recovery, drying, compounding, processing, and end-use. GE Specialty Chemicals, Inc., Parkersburg Center, Fifth and Avery Sts., Parkersburg, WV 26102; (304) 424-5411; Fax (304) 424-5871.

Great Lakes

Two new products for the PVC market function as both flame retardants and polymer modifiers. DP-45 acts as a secondary plasticizer in flexible systems while providing flame retardance and reduced smoke. CN-1427, a smoke-reduction additive for rigid systems, also enhances HDT.

In purely flame retardant developments, a new nonhalogen product, NH-1511, provides V-0 performance in polypropylene and reduced flammability in other polyolefins. PDBS, a new polybromostyrene, is offered in a range of molecular weights, and is finding use in polyester, polyamide, and HIPS applications. Great Lakes Chemical Corp., P.O. Box 2200, Highway 52 N.W., West Lafayette, IN 47906; (317) 497-6100; Fax (317) 497-6234.

Henkel

A new series of Loxiol costabilizing lubricants reportedly offer enhanced thermal stability, allowing a significant reduction in heat stabilizer levels in many PVC formulations. The lubricants are also said to provide improved flow, superior release, better dimensional stability, and gloss control with excellent weatherability in exterior applications. The new products are Loxiols VGE 1884 and VGE 1728 for extruded profiles; Loxiol VGE 1875 for extruded foam profiles; and Loxiols VGE 1877 and VGE 1878 for injection molding. Henkel Corp., Plastic Additives Division, 300 Brookside Ave., Ambler, PA 19002; (800) 654-7588 or (215) 628-1477; Fax (215) 628-1155.

Himont

Several new concentrates have been added to the Xantrix additive delivery system (ADS) family of liquid/low melt peroxides, antistats, and hydrophilics. Produced in concentrations of 5% to 25%, the highly loaded concentrates are supplied as spheres that can be fed with conventional equipment and dispersed uniformly at letdowns up to 75:1 (higher with certain additives) without the difficulties normally encountered in the feeding of liquid/low melt additives.

The Xantrix ADS 3010 series and 3020 series of peroxide concentrates are used in the visbreaking of polypropylene in compounding, fiber spinning, extrusion, and injection molding, where they are said to achieve optimized melt flow rates from single digits to several thousand. The Xantrix 3030 series is used for visbreaking and modification of polypropylene during reactive processing. When used in melt blown processing, Xantrix ADS peroxides are said to create finer denier fibers useful in filtration applications, and they contain no mineral fillers that can cause color, gels, or clog filter packs during fiber spinning.

The Xantrix ADS 2000 series of antistat concentrates in polypropylene have additive loadings up to 25%, so that only a small amount is required for typical end-use levels. As a result, they can be used in difficult-to-handle materials and non-olefinic base polymers without compromising physical properties. Concentrates are available in various chemical types, including amines for general use, non-amines for electronic packaging, and specialty products for meeting stringent industrial codes. Many have FDA approval for food contact applications.

The Xantrix 7015 series and 7015H series of hydrophilic concentrates contain up to 25% additive loading in a polypropylene base, and therefore little is required to render a polypropylene wettable. The uniform dispersion through the fiber allows the surface to accommodate multiple re-wets. The 7015 series is designed for conventional film, fiber, and injection molding applications, and the 7105H for high-flow, melt-blown processes. The products are used in nonwoven diaper liners, battery separators, and general film and molding applications requiring a wettable surface.

Himont also offers the Spinflam MF line of halogen-free flame retardants in free flowing powder form. Designed particularly for use in polyolefins and polyurethanes, the products work by an intumescent mechanism, whereby a hard carbon char is formed upon exposure to flames, which then limits oxygen flow to the resin and extinguishes the flame. Spinflam MF flame retardants reportedly reduce smoke and carbon monoxide emissions significantly and lower toxicity and corrosivity of evolved gases; products using them are said to have a much lower heat-release rate and mass loss than products using conventional halogenated flame retardants. Himont Functional Chemicals, Himont U.S.A., Inc., 2801 Centerville Rd., P.O. Box 15439, Wilmington, DE 19850; (302) 996-5865.

Hitox

Recent improvements to the 95% rutile Hitox Buff Titanium Dioxide include a lighter, more consistent color, SPC-controlled lower particle size, and a more neutral pH. According to the manufacturer, Hitox has performance parameters comparable to white Ti|O.sub.2~ and can now economically replace white Ti|O.sub.2~ in whole or in part in nonwhite plastic colors, and can be used in a broader range of brighter, cleaner colors. Uses for Hitox in plastics include PVC pipe and conduit, color concentrates, vinyl siding, and film. Hitox Corp. of America, 418 Peoples St., Suite 500, P.O. Box 2544, Corpus Christi, TX 78403; (512) 882-5175; Fax (512) 882-6948.

ICI

Two new Atmer internal lubricants for PVC bottle compounds reportedly promote polymer flow through the extruder while increasing thermal and color stability and processing latitude. Atmer 129 is a glycerol monostearate in high purity, white-bead form, and Atmer 1010 is a low viscosity glycerol monooleate liquid. When added at the recommended 1.0- to 2.0-phr concentrations, tests showed that the products increased lubricity by reducing fusion torques by 10% to 20% and lengthened equilibrium times by factors of 3 to 8, compared with the control formulation. Both lubricants are also said to act as effective costabilizers. They have broad FDA, BGA, and MITI food contact approvals, and reportedly have no effect on taste or odor of blowmolded PVC bottles.

A new line of Atmer wetting agents increases the surface energy of polyolefins, allowing liquids to spread over the surface. When added internally, the agents have a controlled incompatibility with the polymer matrix, and gradually migrate to the surface, rendering it wettable. For single-use applications, the wetting agents can be coated onto the final fabricated polymer surface. Eight products are offered for use in PP, HDPE, LDPE, and LLDPE at concentrations of 0.2% to 2.0%.

PTZ Phenothianzine is a new gelation stabilizer for vinyl ester resins that reportedly increases shelf life four to seven times with no effect on gel time and cure when using cumene hydroperoxide as a catalyst. It is a pale yellow, nonhygroscopic, 99+% pure solid that is readily soluble in all vinyl ester systems. When used at the recommended 200- to 500-ppm levels, PTZ is said to provide greater stability at lower cost than either MEHQ or TBHQ stabilizers. ICI Polymer Additives, Concord Pike and New Murphy Rd., Wilmington, DE 19897; (800) 456-3669.

ICI Fluoropolymers has introduced a new fluorocarbon lubricant designed for use in thermoplastics compounding when plate-out and pearlescence are of concern. Whitcon TL6 is a special grade of finely milled PTFE having a low volatile content that ensures inertness during compounding and molding. It is also a suitable for blending with rubbers, oils, and greases. ICI Fluoropolymers, 475 Creamery Way, Exton, PA 19341; (800) 842-8739.

J.M. Huber

Hysafe 510, a domestically produced hydrotalcite, is a synthetic magnesium aluminum hydroxy carbonate that can be used as an acid acceptor in rubber and plastics applications. Hysafe 510 scavenges acids in halogenated polymers during processing, and its addition to polymers prevents corrosion in plastics processing equipment. The manufacturer says it has shown promise in enhanced mixed-metal and organometallic stabilizer performance in PVC, in deactivating Ziegler-Natta catalyst residues in polyolefin manufacturing and processing, and in recycling applications containing halogenated-polymer impurities. It is currently available in white powder form and in concentrates for evaluation and commercial development. J.M. Huber Corp., Chemicals Division, P.O. Box 310, Havre de Grace, MD 21078; (301) 939-3500; Fax (301) 939-0394.

The Solem Division is offering surface-modified alumina trihydrate products with optimized particle-size distribution for improved fire retardance and processing in highly filled pultrusion applications. Solem's 432-CM, 432-Hyflex, 532-Hyflex, and 532-CT are said to provide high loadings, excellent bath suspension, low pulling forces, and exceptional physical properties owing to silane coupling and high glass contents (above 45% if required). Micral ultrafine ATH products are now available in particle sizes ranging from 0.7 to 1.5 microns. The products have low surface area, low soda, and low electrolytes, and have been observed to improve the processing of semirigid PVC compounds and to yield higher tensile strengths than other ultrafine ATHs in crosslinked, silane-coupled elastomers. J.M. Huber Corp., Solem Division, 4940 Peachtree Industrial Blvd., Suite 340, Norcross, GA 30071; (404) 441-1301; Fax (404) 368-9908.

Kemira

UV-Titan P370 is a new surface-treated, ultrafine rutile titanium dioxide pigment said to impart high transparency and UV protection. Its organic coating enables fast and complete dispersion into most plastics, making it ideal for pigment concentrates covering the entire plastics field. The very fine state of dispersion allows extrusion of thinner polyethylene films, and its high purity makes UV-Titan P370 suitable for food packaging materials. Kemira, Inc., P.O. Box 368, Savannah, GA 31402; (912) 236-6171.

Kronos

Kronos has added several new grades to its line of rutile Ti|O.sub.2~ pigments. Kronos 2073 and Kronos 2230 have high thermal stability, recommending them for high-temperature-processing plastics such as LLDPE, polystyrene, and engineering resins. They are said to produce excellent brightness and neutral tone in white products, have very good lightening and hiding power, and are easily dispersed. When used in masterbatches and for the pigmentation of PE for extrusion coating of paper, they are said to prevent lacing of the PE films. Kronos 2073 is approved for use in PVC for potable water. Kronos 2230 is siloxane treated for maximum ease of dispersion and fastest incorporation in preparing concentrates.

Kronos 2200 is a high-strength, blue-toned grade for interior usage in PVC, linoleum, and rubber. Kronos 2210 is designed for ease of dispersion and bluest tint tone for use in all except very high temperature applications. Kronos 2220 is treated for moderate weather resistance and maximum ease of dispersion and is recommended for PVC, liquid colors, polyolefin fibers, and powder coatings.

Kronos 2081 is said to offer high lightfastness and graying resistance and to confer good optical properties on rigid PVC in outdoor applications, laminated papers, and urea and melamine compounds. Kronos, Inc., 3000 N. Sam Houston Pkwy. E., P.O. Box 60087, Houston, TX 77032; (713) 987-6300.

Lonza

Lonza reports that it is offering new high performance carbon additives for products in industries such as automotive, electronics, and high-tech engineering. The company says that graphites offering superior crystallinity and purity, and special cokes, find use in a wide range of compounds, including thermoplastics, thermosets, elastomers, and PTFE. Depending on the specification, thermal, electrical, tribological, chemical, and processability properties can be defined, modified, or improved. Lonza Inc., 17-17 Route 208, Fair Lawn, NJ 07410; (800) 777-1875 or (201) 794-2400; Fax (201) 794-2695.

Lowi

Lowilite 62 is a new polymeric hindered amine light stabilizer (HALS) specially developed for use in polyethylene. It can also be used in polypropylene, polyurethane, and coatings. Lowilite 62 promises high thermal resistance (up to 320|degrees~C), no migration, extraction resistance, and good heat sealing properties for film applications. It is available as a powder or in nondusting, free flowing pellets. Lowi Chemical Corp., 7 West Bowery St., Suite 811, Akron, OH 44308; (216) 762-8614; Fax (216) 762-1135.

M.A. Industries

M.A. concentrates are synergistic additive combinations for stabilizing thermoplastic resins. UV-201, UV-149, UV-247, and UV-249 are HALS-based UV stabilizer and antioxidant packages for styrenics, polyethylenes, polypropylenes, and polypropylenes requiring high UV resistance, respectively. UV-349 is a processing and UV stabilizer package for polyesters. Protection for PP during gamma-ray sterilization is provided by UV-822. White Ti|O.sub.2~ and ZnO pigments are combined with UV stabilizers in PP110W to provide superior weathering properties for exterior applications.

M.A. concentrates for recycled thermoplastics include UV-901, UV-922, and UV-921 antioxidant packages for styrenics, PP, and PE, respectively; UV-949 and UV-947, UV stabilizer and antioxidant packages for PE and PP, respectively; UV-017, a UV stabilizer and antidegradant package for PET bottle resins; and MA-333 and MA-327, impact modification packages for PP and PE, respectively. M.A. Polymers is a specialty compounder that can formulate a concentrate to a customer's specifications. M.A. Industries, Inc., P.O. Box 2322, 303 Dividend Dr., Peachtree City, GA 30269; (404) 487-7761; Fax (404) 631-4679.

Mearl

Mearlin Luster Pigments are now being recommended to package goods manufacturers and others requiring high-contrast, laser-code identification marks. The specialty pigments of titanium dioxide and/or iron oxide coated mica function as receptors of laser light while enhancing the plastic with their pearly luster. The reaction of the laser light and the pigment darkens the plastic polymer, producing permanent, clear-code markings, and eliminating the need for inks and solvents. For details, obtain the new 5-page technical bulletin, Lasermarking Polymers With Mearlin Luster Pigments. The Mearl Corp., 41 E. 42nd St., New York, NY 10017; (212) 573-8500; Fax (212) 557-0495.

The Franklin Mineral Products Division has introduced Bondica 2050, a 0.5% silane surface modified wet ground muscovite mica. It is a functional filler in polyurethane systems, said to enhance physical properties while retaining finish characteristics such as distinctness of image. Bondica 2050 is available in three particle-size distributions with varying levels of fines to accommodate formulation for specific rheologies or viscosities. Franklin Mineral Products, A Division of Mearl Corp., Drawer 390, Hartwell, GA 30643; (404) 376-3174; Fax (404) 376-3044.

Mesa Industries

Mesa has completed work on what the company believes to be the first commercially available liquefied endothermic chemical blowing agent. Called Optiflo, the liquid endotherm can be pumped directly into the feed throat for extrusion or high or low pressure molding applications. Reported advantages are the product's high loading and the increased accuracy of liquid metering. Optiflo also promises a long shelf life and low viscosity for ease of metering.

Among the company's other products are a line of hindered amine UV stabilizers, part of its Optitrate line of solid concentrates, that are designed for use in polyolefins; there is also a line of complementary antioxidants. Both products are suited for use in a range of applications from molded parts to thin film. Mesa Industries, 230 N. 48th Ave., Phoenix, AZ 85043; (602) 269-3199; Fax (602) 269-3389.

Mica-Tek

Five new colorants are available from Mica-Tek for the thermoplastic, thermoset, and gel-coat markets. They reportedly impart a speckled or granite-like appearance in opaque applications and a glittering or nonglittering effect, based on the specific grade, when used in transparent and translucent plastics and coatings. Black, bronze, blue, champagne, and silver products have been evaluated in a variety of polymers. The particle size distribution is typically 150 to 425 microns; custom products are also available. Yellow, red, orange, green, and brown versions are under development. Markets targeted by the company include housewares, bathwares, toys, and recreational items. Mica-Tek, Inc., 821 Tilton Bridge Rd., SE, Dalton, GA 30721-5499; (404) 277-3740; Fax (404) 277-9827.

Miles Inc.

Last fall, the Polysar Rubber Division of Miles Inc. reported the development of two new experimental grades of Polysar EP (ethylene polypropylene) synthetic rubber for plastics modification applications.

EPM XF 004 elastomer, designed to improve flow characteristics and gloss in polyolefin blends, is expected to find particular application in the automotive market for bumpers and fascias. The company says that its high flow properties are particularly important for TPOs, which must compete against the flow properties of the liquid components used for RIM systems for bumpers and fascias. Other potential applications include appliances and durable goods, particularly for gasketing and tubing; films; and consumer parts.

EPDM XG 006 elastomer, recommended for modification of propylene resin for use in thermoplastic olefins (TPOs), is said to be the only oil-extended synthetic rubber available in pellet form. It is intended particularly for uses in TPOs requiring very low stiffness and very high flow properties. A special characteristic of the elastomer is the paraffinic oil used, which has almost no aromatic content (0.5%). This helps improve the stability, the UV and oxidation resistance, and the color integrity of the material. Most oil-extended synthetic rubbers use paraffinic oils that have up to 12% aromatic content. Polysar Rubber Division, Miles Inc., 2603 Market St., Akron, OH 44313; (216) 836-0451.

Milliken Chemical

Milliken's Millad clarifier is being used in the polypropylene bottles that carry "Pledge" liquid household cleaner, a product of S.C. Johnson Wax. The Johnson company says that the Millad provides the clarity it requires at some tradeoff of impact strength, but with otherwise "the best combination of properties available." Himont supplies the PP.

Millad polyolefin clarifier is FDA-cleared for food contact, and it can be used in a variety of PP manufacturing processes, including injection molding, blowmolding, and sheet thermoforming.

Other Milliken additive products include ClearTint non-pigment transparent colorants and Advantage nonpigment opaque colorants. Milliken Chemical Division, Milliken and Co., 920 Milliken Rd., P.O. Box 1927 M-400, Spartanburg, SC 29304; (803) 573-1877.

NYCO

NYCO reports that as a result of recent market demands for low-moisture reinforcing fillers, it has produced a family of hydrophobic, chemically reactive Wollastokup products that provide advantages in mechanical properties, processing, and warehousing for both thermosets and thermoplastics. The company says that these dual functional reinforcements provide improved bonding between the mineral and the polymer, increased flow rates with fewer volatiles, reduced water vapor transmission, and product warehousing stability. NYCO Minerals, Inc., Box 368, Willsboro, NY 12996; (518) 963-4262; Fax (518) 963-4187.

Occidental

Use of synergists other than antimony oxide, such as zinc borate, zinc oxide, and red, black, or yellow iron oxides, with Dechlorane Plus to flame retard nylons, can greatly reduce the loading level needed to achieve flame retardance. This may result in a cost savings, improved physical and electrical properties, and colorability without the addition of dyes and
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Publication:Plastics Engineering
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Date:Jun 1, 1992
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