Glass bead fillers increase mechanical and dielectric strength. Can be supplied coated with resin.
ADELL PLASTICS INC.
Custom filler concentrates with up to 75% loading available in all thermoplastics. Multifunctional concentrates can contain more than one additive.
ADVANCED CERAMICS CORP.
Boron nitride powder is said to be an excellent polymeric material additive for applications requiring very low thermal resistance. It provides the electrical resistance and the dielectric constant other high thermally conductive materials lack.
The morphology of boron nitride powder is platelet shaped. This characteristic provides superior thermal conductivity measurements when used as an additive in polymers and is said to outperform other ceramic, electrically insulating materials because of the platelet structure.
Applications where heat dissipation requirements continue to increase will see improved results and increased usage temperatures with the addition of boron nitride.
Boron nitride has excellent lubrication properties, providing lower friction coefficients and reduced wear when used as an additive. It can also be effective as a nucleation agent or processing aid.
Walnut-shell flours low-density fillers for phenolics and cast polyesters. Standard grades (WF-5, -200 mesh; and WF-7, -325 mesh) are light in color, free-flowing, nontoxic, low in resin demand, and easily dispersed.
Fillers include calcium carbonates, kaolin clays, alumina trihydrates, wood and fiber flocks, wood flours, micas, magnesium carbonates, and precipitated amorphous silica.
Ground hydrated alumina, calcium carbonate, and magnesium oxide fillers. Twenty-one particle-size distributions from 65% to 100% minus 325 mesh with median particle sizes of 2.5 to 30 microns. Also super-fine ground fillers with a median particle size of 1.5 microns and top size of less than 10 microns, and 12 grades of hydrated alumina/calcium carbonate blends.
ACM-MH 95 magnesium hydroxide serves as a flame-retardant filler, releasing water of hydration like alumina trihydrate, but is able to withstand processing temperatures to 625 F vs. 425-445 F for ATH. Both 7-micron and 3-micron grinds with or without surface treatment.
AMERICAN METAL FIBERS, INC.
Stainless-steel, brass, low-carbon-steel, and copper fibers in long-strand fiber reels, needle-punched blankets, and chopped fibers. Exhibit high strength, high modulus, ferromagnetic properties, good corrosion resistance, and high electrical and thermal conductivity.
AMERICAN WOOD FIBERS
Cellulosic fibers and flours in hard and soft wood grades. Particle sizes from 10 to 200 mesh (2000-45 microns) come in bulk or bagged form.
Benefits of using wood flour as an additive include increased dimensional stability, reduced thermal expansion, controlled shrinkage and warpage, superior bulk-to-weight ratio, improved "wood" surface appearance, low volumetric cost, and reduced mold abrasion.
Suitable for injection, extrusion, compression, and rotational molding of both thermoplastics and thermosets. Used in loadings from 10% to 70% in various resins including phenolic, melamine, polyester, PS, PE, PP, and PVC.
AMERICA'S BEST BUILDING PRODUCTS
Micro-Mix custom-engineered, multicomponent reinforcement and filler system is inert, inorganic, and non-combustible. Formulated for high loadings (60-80% by volume) without sacrificing physical properties and tensile of polyesters, vinyl esters, epoxies, and thermoplastics. Cost-effective and can be poured, sprayed, extruded or injection molded. Sprayed compounds need no rollout. Different systems provide varying degrees of strength, density reduction, flame retardancy, and cost savings in applications such as gelcoat backup, sandwich cores, coatings, tooling, and casting compounds.
High-purity (99.9%) submicron aluminas and calcined aluminas classified to narrow particle size ranges. Alpha and gamma forms available. Surface-area to 120 [m.sup.2]/g.
BEKAERT CORP. FIBRE TECHNOLOGIES
Offers very fine stainless steel fibers 8 and 11 microns in diam. Fibers are bundled in a concentrate made of 75% fibers and 25% various binders to fit all thermoplastic resins. Most ESD and EMI applications require 5-10% of the fibers. Beki-Shield GR fibers have high electrical activity with hardly any influence on mechanical properties, polymer shrinkage and warpage. Coloring of resin is possible and manufactured parts are recyclable.
BURGESS PIGMENT CO.
Hydrous, anhydrous, and thermo-optic aluminum silicates (clays). Hydrous and calcined clays provide physical strength, impact and compression resistance. Custom silane-treated products for applications from nylon to crosslinked PE. For opacity and tint strength, Optiwhite and Optiwhite MX permit up to 50% reduction in Ti[O.sub.2] loadings. Burgess No. 30 and 30P in PVC offer high electrical resistivity. Burgess KE in medium-voltage cable provides maximum long-term wet electrical resistance.
THE C.P. HALL CO.
Fillers include micas and clays.
Cab-O-Sil fumed silica processing aid, thixotrope, and viscosity-control agent in unsaturated polyesters, epoxies, silicone rubber, and PVC. Controls polyester viscosity and prevents sagging or running in gel coats and laminating resins. In liquid resin systems, also aids in suspension of solids and even dispersion.
In PVC plastisols and calendering, fumed silica soaks up excess plasticizer, provides thixotropy, prevents plateout, and keeps dry compounds free-flowing. Dielectric properties and heat stability also make it a suitable reinforcement for silicones and PVC electrical insulation.
Thermax thermal carbon black produced via thermal decomposition of natural gas in the absence of oxygen has low-level structure and large particle size in several grades. Can be compounded at high loadings without degrading polymer properties. Provides very low abrasion, good dielectric properties, chemical and heat resistance, and low sieve residue values (typically 2 ppm on 325 mesh). Applications include XLPE wire and cable insulation, heat-shrinkable connectors, and general pigmentation.
Solid glass microspheres in various sizes reinforce and extend all thermosets and most thermoplastics for injection molding, extrusion, compression molding, and open-mold casting. Treated with silane or other coatings. Said to increase flow and ease of extrusion; raise compressive strength, stiffness and abrasion resistance; reduce creep, water absorption and shrinkage; and give better mold fill and more uniform cooling, which can cut injection molding cycles by 20%.
Diatomaceous silicas (diatomite) used as antiblock agents in LDPE, LLDPE, and HDPE films. Use levels can range from 0.1% to 1%. Diatomite lends itself well to master-batching at levels of 50% by weight. Super Floss grade offers good optical properties at an economical cost,
CLAREMONT FLOCK CORP.
Fiber filler from almost any natural or synthetic fiber (cotton, nylon, polyester, PP, rayon, acrylic, aramid). Both random- and precision-cut types available.
COMPOSITE MATERIALS, LLC
Metal-coated graphite fibers act as conductive filler/reinforcements for EMI/RFI shielding, ESD protection and thermal management.
COMPOSITION MATERIALS CO., INC.
Organic fillers include flour and grit nut shells in all mesh sizes; cellulose flock, bleached and unbleached; treated Cellulose K asbestos replacement; hard and soft wood flour in 40-325 mesh; reclaimed rubber dust; flour and grit rice hulls; and flour and grit corn cobs.
Plasti-Grit crosslinked polymer filler available in urea, polyester, and melamine for compression molding and extrusion.
Also hollow and solid glass and ceramic microspheres.
CONSTRUCTION TECHNOLOGY DIV. INVESTMENT HOLDINGS GROUP LTD.
Marketing agent for expanded glass spheres in sizes from 0.5-1 mm to 10-20 mm. Used as a lightweight filler increasing thermal insulation values and reinforcement.
CUSTOM GRINDERS SALES, INC.
Ground alumina trihydrate and calcium carbonate. Custom grinds and/or blends available. Also surface modified alumina trihydrate. Products packaged in 50 lb bags, 2000 lb bulk bags, or in bulk truckloads.
Aerosil 130, 200, 300 and 380 pyrogenic fumed silicas are thixotropes and reinforcing fillers for silicone rubber and used as additives to prevent plateout in calendered PVC. Aerosil R 972 hydrophobic pyrogenic silica is a reinforcing filler for silicone rubber and a free-flow additive used where moisture pickup can cause caking problems.
Aluminum oxide C pyrogenic alumina is an antistatic agent for granular plastics.
Sipernat 22LS, FK500LS, and Sipernat 44 precipitated silicas are antiblocking agents in blown PP film (also Aerosil OX50 and Aerosil FLM). Sipernat 22LS and FK500LS also used to prevent plateout in PVC calendered films. Sipernat 22, 22S, 50, and 505 act as anticaking aids or can be used to convert liquids into easy-to-disperse powders. Hydrophobic Sipernat D17 and D11 are anticaking agents for extremely hygroscopic powders, and FK140 and FK160 are reinforcing fillers in silicone rubber.
DEMEX MINERALS DIV.
Med Carb white, dry-ground limestone (calcium carbonate) for filling thermoplastics and composites includes grades with dry brightness of 86-90 and particle sizes of 68-99% passing 325 mesh.
D.J. ENTERPRISES, INC.
Sillum-200 Q/P noncombustible, chemically stable inert alumina silicate bead processed to eliminate any organic tramp elements that could modify performance. Free-Flowing Bead (standard 44-10 micron screen analysis) blends easily with liquids or powders. Product is insoluble, nonthixotropic, and nonhygroscopic; gives superior suspension and dispersion; reduces shrinkage; and improves hardness.
Metallic heads in 44-10 microns used where additional weight is needed, such as nylon counterweights or compounds for lawn furniture. Also used as antistatic additive.
Micro-P light-weight resin extender, 8-10 lb/cu ft, is noncombustible, chemically stable, inert amorphous mineral silicate. It reduces shrinkage and exotherm temperature and is nonconductive, compatible with flame retardants, and insoluble in water and organic acids. Has high filler-loading capability and low moisture content and is nonthixotropic and nonhygroscopic.
Cork in spherical, cubical, elongated, and shredded forms is an inert filler used to lower cost and density, to build viscosity, and to boost dimensional stability and coefficient of friction. Particle sizes of 1 in. to 150 mesh and densities between 3-12 lb/cu ft. Reportedly can increase thermal, acoustical, and impact-absorption properties when used in sufficient quantities.
DRY BRANCH KAOLIN CO.
Hydrite water-washed kaolin clay grades in different particle sizes suitable for thermosets and thermoplastics. The pH control of grades assures proper cure and stability. Glomax calcined kaolin extenders give optimum electrical properties in wire coatings. Partial Ti[O.sub.2] replacement is said to be possible in many sheet and molded products with either NeoGen or Altowhite high-opacity extenders. Kaopaque delaminated aluminum silicate reportedly offers improved physical properties in most thermoplastics.
EAGLE QUALITY PRODUCTS CO., INC.
Eagle mica products used in all thermoplastic and thermoset resin systems as reinforcing fillers. Eagle M series is white and compatible with all plastic systems. It produces clean, consistent colors, particularly in PP and thermoplastic polyesters.
ECKART AMERICA LP
Regular and dedusted atomized and flake aluminum powders improve physical properties and machining characteristics.
Line of products enhance degradation of plastics using oxidative or photodegradative additives or a combination of both. Products accelerate degradation when plastics articles are properly composted or exposed to ultraviolet rays.
EMERSON & CUMING COMPOSITE MATERIALS, INC.
Eccosphere line of hollow composite macrospheres in median diameters of 1/2 and 2 in. range in average densities from 0.20-0.40 g/cc. They can provide weight reduction, thermal and acoustic insulation, and control of mechanical properties. Typical applications include syntactic buoyancy and insulation, evaporation control, and tooling.
ENDEX POLYMER ADDITIVES INC.
Endex MP metal-plastic compounds in various thermoplastic carriers are highly filled (up to 93%) with various metal powders. Compounds include copper-nylon, stainless steel-HDPE, and iron-acetal. Products used in applications such as injection molded jewelry, containers, gears, and conductive compounds.
ENGELHARD CORP. SPECIALTY PIGMENTS & ADDITIVES
Mineral reinforcements include Translink surface-modified calcined kaolin; inert, fine-particled Satintone calcined kaolin extenders and reinforcements with low residue and moisture; ASP, Buca and Catalpo hydrous kaolin in various particle sizes and modifications including surface treatments and delamination; and Emcor 66 ultra-short whiskers used in phenolic molding compounds for brake linings and nonasbestos gasketing.
Wet-ground muscovite mica consists of tiny, extremely thin flakes of a potassium/aluminum silicate crystal with traces of other elements. Flakes have a silvery, off-white color, average thickness of 0.5 to 2 microns, and 2 to 150 micron diam. Available in nominal 100, 160 and 325 mesh grades and in 1000-mesh and finer special grades. Can increase stiffness; modulus, yield stress, breaking stress, and heat-deflection temperature. High dielectric strength and low power factor make it useful in electrical applications. (See ad p. 335.)
Thermoplastic microspheres are ultra-lightweight, flexible, and resilient. Average density between 0.025 and 0.060 g/[c.sup.3]; average particle diam. Of 20 to 140 microns. Uniform cell structure and compatibility with resins such as PUR, epoxies, PVC, and PE. Also used in polyesters as a lightweight filler that imparts enough flexibility to the composite to reduce cracking and brittleness.
Available unexpanded for in-situ foaming. RIM applications incorporate Expancel DU (dry, unexpanded) to achieve target densities and reduce shrinkage. PVC plastisols use Expancel DU for uniform, controlled voids in foaming. Grades available at expansion temperatures from 176 to 400 F.
FIBER SALES & DEVELOPMENT CORP.
Solka-Floc cellulose filler improves impact strength and wear characteristics in moving parts. Low specific gravity, controlled bulk, and good thermal properties. Filled urea compounds reportedly withstand temperatures to 170 F; melamine compounds withstand 210 F; and darker colored phenolics take even higher temperatures.
FRANKLIN INDUSTRIAL MINERALS SPECIALTY PRODUCTS DIV.
Amical NSF-listed calcium carbonate in a range of particle sizes includes surface-treated products. This oolite material can be used in vinyl, polyester, and urethanes, minimizing mold wear. Also offers alumina trihydrates.
FUJIMI AMERICA INC.
High-purity alumina powders and CMP slurries. Customizes ultra-tightparticle-size distributions down to submicron levels.
Precision-cut aluminum glitter with high-temperature coatings produces special visual effects in injection, extrusion, and blow molding.
GLS COMPOSITES DISTRIBUTION CORP.
Fumed silica can be used for viscosity control or as a drying agent, reinforcement, or thixotrope. Soda-lime-borosilicate glass bubbles reduce density of polyester castings and cost of cultured marble.
W.R. GRACE & CO. GRACE DAVISON
Syloid and Sylobloc pure, chemically inert, nontoxic synthetic amorphous silicas used in PVC, PE, PP, PVDC, EVA, and other polymers. When used in concentrations from 0.25% to 3%, they act as antiblocking agents or CoF modifiers, processing aids, and prevent caking and plateout in powders. Also promote ink acceptance for enhanced print image. Controlled particle-size distributions and good particle integrity yield highly efficient flatting and antiblocking agents for high-clarity films.
Combinations of Sylobloc silicas and slip aids or other additives show improved benefits over the separate addition of two or more functional additives.
GREFCO MINERALS INC.
Dicaperl hollow glass perlite microspheres improve impact resistance and machining properties and reduce weight in some formulations, especially in lightweight cultured marble and polyurethane applications.
Dicalite diatomaceous earth fillers used primarily in antiblocking of PE films help reduce weight, increase impact resistance through nondirectional reinforcement, and give dimensional stability.
Dicaflock cellulose fiber fillers improve impact strength and dimensional stability in molded thermoset.
See PolyOne Corp.
J.M. HUBER CORP. CHEMICALS DIV.
Zeothix precipitated hydrated silicas offer thixotropy and viscosity control. Zeothix 265 prevents sagging or running during cure of polyester laminating resins, gel coats, epoxies, and PVC plastisols and coatings. Helps suspend and disperse solid fillers in liquid resins. As a processing aid in PVC plastisols and calendering, it prevents plate-out, dries up excess plasticizer, and acts as a free-flow conditioner where dry compounds are prone to caking or sticking. Also antistat and anti blocking properties.
J.M. HUBER CORP.
Functional filler/extenders include calcium carbonate in particle sizes from 1.0 micron to 40-mesh granular. Surface-treated materials improve dispersion and permit increased filler loadings. W series suited to SMC, BMC and RTM. NSF-approved PVC pipe grades available, along with products for PVC (flexible, rigid, plastisols, floor tile), polyester, epoxies, elastomers, and urethanes. New surface-treated, high brightness grades for polyolefins include a one-micron product for film.
Water-washed and calcined aluminosilieates reduce cycle times, extend resins without sacrificing physical properties, reduce pound-volume costs, reduce mold shrinkage and creep, and improve heat-distortion temperature, electrical properties, surface smoothness, and printability.
Hydrotalcite grade used in polyolefins as acid scavengers. Fine particle size makes Hysafe products suitable for film applications as well as injection molding. In PVC hydrotalcite enhances performance of mixed-metal stabilizers.
A surface-treated barium sulfate exhibits better flow properties, lowers torque in compounding, and improves dispersion.
Precipitated silicas for use as thixotropes in coatings and thermoset resin systems.
PIGMENTS & ADDITIVES DIV.
Specialty calcium carbonate and kaolin clay products include FilmLink series designed for film for improved impact, tear strength stiffness, and enhanced bubble cooling. For polyolefin injection molding proprietary additive technology reduces cycle time by up to 40%. Camel-Cal ST provides superior impact strength and processability at high loadings in vinyl siding. In wire and cable and elastomer applications PoleStar line of mctakaolin and calcined kaolin products offers dimensional stability and superior electrical properties. In Film product line is a cost-effective antiblocking agent in polyester film applications.
PIGMENTS & ADDITIVES DIV.
Finely ground, crystalline white marble fillers with a high percent of calcium carbonate designed specifically for polyesters, PP, PVC, epoxies, and elastomers. Stearate coated grade approved for high-pressure potable-water PVC pipe. Also several grades of alumina trihydrate.
K-T FELDSPAR CORP.
DIV. OF KENTUCKY-TENNESEE CLAY CO.
Micronized fillers used in coatings, silicone rubber, polymers, sealant and adhesive applications. Minspar #3, #4, #7 and #10 feldspars used in translucent or clear plastics because of its low-tint strength, stain resistance, high loading, and reportedly excellent abrasion resistance.
Specialty and commodity talc products for PP, copolymer, mPP, TPO, HCPP, HDPE, nylon, select thermosets, and recycled polymers that include those used for plastic lumber. Product line includes Cimpact ultrafine tales, Jetfil macrocrystalline tales, Vertal coarse macrocrystalline tales, and Mistron microcrystalline tales. Surface modified grades also available.
MALVERN MINERALS CO.
Novacine silica products are a type of quartz with an average particle size of 3-7 microns. Novacite differs from other silicas in its low sorptive properties and low abrasiveness. Used as an extender/filler in silicone rubber, various thermosets, and engineering thermoplastics.
Novakup surface-modified silica reinforcements can be treated with silanes, titanates, sulfonyl azides, or glass resins.
Other surface-modified inorganic extenders, pigments, and fillers are Trikup (alumina trihydrate), Monykup (antimony oxide), Titankup (titanium dioxide), Wollastokup (wollastonite), Carbokup (calcium carbonate), Silikup (silica), and Klakup (aluminum silicate).
THE R.J. MARSHALL CO.
ATH, calcium sulfate (gypsum), calcium carbonate, and lightweight fillers. Available separately or in combination with guaranteed properties such as viscosity, gel time, and color, Special-effect fillers available for cast polymer products. Also Spraylite filler systems for making high quality gelcoated, acrylic, or laminated structures. Benefits include lowering resin consumption and reducing the amount of glass used.
MARTIN MARIETTA MATERIALS OYSTER SHELL PRODUCTS DIV.
SF-4 ground and fractionated mollusk shells are 97.5% calcium carbonate. SF-4 is a general-purpose filler said to disperse well and impart smoothness to calendered and extruded products with less property loss than with other fillers of comparable size.
MILLENNIUM SPECIALTY CHEMICALS, INC.
Silcron amorphous, fine-particle silica gel in a variety of grades performs as a thixo trope and flatting agent, in addition to preserving clarity and smoothness of finish, Improves pigment dispersion and moisture control; eliminates blocking and plate-out; improves mar resistance or pencil and ink receptivity; and ensures smoother, uninterrupted flow of dry powders. A nontoxic, chemically inert powder averaging 4 to 8 microns can be dryblended with resin or pigment powders, compounded into resin melts, or be incorporated into a masterbatch or concentrate. Compatible with a range of thermoplastics.
Mineral fillers/extenders include barytes, calcium carbonate, attapulgite clay, bentonite clay, and talc. Baryte high-specific-gravity filler can be used for sound abatement and acid resistance, and in foams and plastics where weighting properties are needed. Barytes are both white and off white. Custom-designed products available.
P.J. MURPHY FOREST PRODUCTS CORP.
Hardwood and softwood flour in all mesh sizes (from 20 to 100 mesh in stock). Packaging includes bulk rail cars, bulk trailers, 1000 lb bulk bags, and 2,34 cu/ft paper bags palletized and stretch wrapped.
Manufactures and distributes nano-sized inorganic and organic powders (nanophase, nanocrystal, submicron, ultrafine, nanoparticles, nanotubes, quantum dots, and nanoballs).
Produces varying grades of untreated and surface-modified wollastonite, a naturally occurring, white, nonmetallic mineral with an acicular structure. Products are cost effective, functional fillers and reinforcements for improving mechanical and physical properties in thermoset, thermoplastic and elastomeric applications. New generation of fine-diameter, high-aspect ratio grades exhibit superior balance in flex, impact and melt flow at a reduction in raw material/unit costs. ISO 9002/9001 certified.
OMYA (CANADA) INC.
Snowhite high-purity, dry-ground calcium carbonates in tightly controlled particlesize distribution reportedly allow optimized filler levels.
Dry- and wet-ground calcium carbonate. Wet-ground Omyacarb in fine and ultrafine grades comes with or without surface treatment and is a high-purity, high-brightness grade used in rigid and flexible PVC siding, pipe, profile, calendering and wire/ cable compounds, polyolefin film and injection molding. Dry-ground Omyacarb from 5 to 20 microns mean diam. is for plasticized PVC, elastomers, epoxies, PUR, and polyesters.
Micropoppers are 2-6 micron hollow polymeric microspheres, which expand to 10 times their original volume inside the resin matrix when heated to 265-300 F. Can be made of various resins including PMMA, PVDC, or SAN. Unexpanded density is just over 1.0 g/cc. Depending on wall thickness and coatings used, expanded density can range from 0.02-0.03 g/cc to 0.15-0.22 g/cc. Products have been used in PS and PVDC.
Also available in expanded form under the name Polymicroshells. This pourable filler can be sprayed and pumped at high shear and pressure.
Mica and feldspar mineral fillers for plastics and coating applications.
PLASTICS COLOR & COMPOUNDING
Concentrates contain different levels of clay and talc for use in styrenics, polyolefins, and most other thermoplastics.
POLAR MINERALS, INC.
Premium grades of highly pure, low-iron, platy talcs, high-purity calcium carbonates, phlogopite micas, and ground white barium sulfate for high-density compounds. Automotive markets are a key focus. Rigorous SPC/SQC programs ensure consistency.
POLYONE CORP. DISTRIBUTION GROUP
Specialty additive concentrates in either solid or liquid form, with or without colorants, available containing fillers and other additives.
POTTERS INDUSTRIES, INC.
Solid and hollow glass spheres improve processing and flow, reduce cost, and produce dimensionally stable molded parts. Maximum bonding with resin is obtained and properties improved with coupling agents. Spheres aid dispersion and reduce orientation of fibers in glass-filled compounds. Silver-coated spheres offered for electrical and EMI-shielding applications.
Q-Cel hollow spheres are fine, inorganic spherical particles developed primarily as low-density fillers/extenders for thermoset resins. Can be used in polyurethane, plastisols, polyester casting, spray-up, SMC, BMC, and syntactic foams. Advantages include reduced part cost and/or weight and improved structural and performance properties. Applications include simulated wood furniture parts, boat construction, synthetic marble, body putties, bowling-hall cores, SMC and FRP panels, and other composites. Glass and ceramic microspheres available in a range of particle sizes and densities.
Also surface-modified hollow ceramic microspheres using a patented surface-modification technology. Bubblekup Extendo-spheres come in three grades from 57- to 100-micron average particle size and 0.7 specific gravity. XOL-200 Buhblekup with 100-micron average size and 0.24 density is used in liquid resins.
Offers magnesium oxide and magnesium carbonate.
READE ADVANCED MATERIALS
Manufacturer and value-added custom processor of metal, alloy, mineral, composite, nano, aluminide, and intermetallic particle fillers and reinforcements for high-performance applications. Products can be made almost 100% pure, and in sizes down to 10 angstroms (nominal).
Also chemically surface-modified fillers, platelets, fibers, whiskers, microspheres (monoclinic and stabilized), conductive additives, borides, carhides, and nitrides.
RMC INDUSTRIES, INC.
Magnesium hydroxide fillers reportedly improve smoke suppression in PVC, EVA and PR. Magnum-White and MGH-93 are milled to mean particle sizes of 2, 10 and 30 microns.
Magnum-White contains a minimum of 35% magnesium hydroxide and MGH-93 a minimum of 85% (average 93%). Reportedly reduces or eliminates need for antimony oxide.
N.M. ROYAL INC.
Mineral fillers include products with less than 0.1% free crystalline silica, surface-treated calcium carbonates in particle sizes as small as 0.04 micron average present unique thickening and reinforcing opportunities. Hydrophilic fumed silicas combine with standard hydrophobic fumed silicas for compounding. Flame-retardant package includes anew magnesium hydroxide, antimony oxide, hydrated alumina and various pre-compounded blends for plastic.
Calcium-carbonate coated plastic spheres can be formulated to withstand temperatures as high as 350 F and offer lightweight potential. Aramid fibers now available in an opened form for easy dispersion, yet high reinforcement.
Offers diatomaceous silica, synthetic hydrous calcium silicate, calcium carbonates, talcs, and surface-treated calcium carbonates and talcs, plus a line of aluminum flake and atomized powders.
SHAMOKIN FILLER CO., INC.
Carb-O-Fil is a low-cost, black, inert carbon filler ground from anthracite coal with a specific gravity of 1.47. Disperses readily and is used in PS, phenolics, urethane coatings, and polyesters.
SHERWOOD DIVERSIFIED INC.
Alumina trihydrate, calcium carbonate, magnesium hydroxide, and talc fillers. Services include custom blending, custom coating of fillers with stearates, and matching particle-size ranges.
Sil-Cell low-density, hollow inert filler displaces up to six times its weight in resin and can be used to replace up to 40% of the resin in a compound. This cellular mineral filler has an average particle size of 45-75 microns and is typically used in epoxies, polyester cultured marble, FRP tub/shower enclosures, decorative plaques, joint compounds, and furniture parts. Can be pumped and sprayed in liquid resin systems. Available with various surface treatments to control viscosity.
SLOSS INDUSTRIES CORP.
PMF Fiber filler/reinforcer generally improves properties and/or lowers cost (compared with milled glass) in nylon 66, PP, phenolics, and PBT. Can be used in greater amounts than short asbestos fibers without causing overly high viscosities and can be added along with other dry ingredients. PMF Fiber consists of short fibers for filling inside corners, in molded in-hole areas and molded in-pin areas, which are usually fiber-poor. Variation in fiber length allows it to flow well with the resin and reduces flow-line segregation.
SOUTHERN CLAY PRODUCTS, INC.
Hydrophilic and organophilic rheological additives for a wide range of industrial applications including paints, coatings, greases, plastics, inks, adhesives, caulks and sealants, and personal- and household-care products.
Rentonite mineral is used as a building block for manufacturing aqueous and solvent-based rheological additives. Products are good impact modifiers, heat-distortion modifiers, mineral functional fillers, thixotropic agents, and thickeners.
SPECIALTY MINERALS INC.
SUB. OF MINERAL TECHNOLOGIES INC.
Mineral filler products include ABT antiblock tales for polyolefin films that provide a balance of blocking efficiency, optical properties, and ease of handling. PolyBloc and MicroBloc talcs minimize absorption of expensive formula additives.
MicroTuff chemically surface-modified reinforcing talcs possess enhanced impact/ stiffness balance, superior long-term heat stability, and superior color and color uniformity.
Super-Pflex and Ultra-Pflex precipitated calcium carbonate (both with 0.7 micron average particle size) used extensively in rigid PVC applications. Super-Pflex provides higher loading levels and reduced formulation costs while maintaining critical properties in PVC siding and profiles. UltraPflex enhances impact strength and surface appearance in extruded and molded parts.
ViCron ground calcium carbonate products and coated Hi-Pflex, PFinyl, and SuperFil exhibit controlled particle size, high brightness, low resin demand, and ease of handling. Applications in flexible PVC compounds, specialty polyolefins, and calendered vinyls.
SPECTRA INDUSTRIES INC.
SPECIALTY CHEMICALS DIV.
Low-cost, medium-to-large particle-size surface-modified silicas improve stain and abrasion resistance and weatherability. F-200 (70-75 mesh), and F-400 (42-45 mesh) silicas permit exceptionally high loadings without severe loss of physical or chemical properties.
F-Series silica fillers are compatible with FRP backup layers, gel coats, epoxy flooring, and other thermosets and thermoplastics. In epoxy and polyester systems F-400 and F-200 replace up to 75% of resin and can substitute for glass beads and microspheres.
F-1200 and F-1500 are high-purity, surface-modified ground silicas with multifunctional surface characteristics. Provide strong, dense, chemical-resistant composites. Compatible with many polymers, such as polyester, PE, and PP. Consistent whiteness provides batch-to-batch color uniformity.
DIV. OF GEORGE C. HAWLEY & ASSOC.
High-aspect ratio, surface-treated and synthetic mica. Pigmented in black, red, gold, silver and bronze. Graphite flakes, powders and expandable graphite for use in fuel cells.
Offers hollow microscopic glass spheres with average particle size under 70 microns. Density, strength, packing fraction, particle size, and percent of floaters are controlled. Scotchlite Glass Bubbles reportedly allow for a compound or composite for best cost, weight, texture, shrinkage, and sanding time. Enhancement potential includes abrasion- and corrosion-resistance, gloss control, hardness, low viscosity and lowered VOCs in industrial coatings. Applications include auto-body putty, automotive plastisols, urethane foam, polyester SMC, BMC, spray-up, and hand lay-up.
Zeospheres--thick-walled, high-compressive-strength, very fine particle size ceramic microspheres--used as specialty extenders in thermoset and thermoplastic systems such as SMC, BMC, RIM, RTM, compression molding, injection molding, extrusion, and potting/casting. Variety of particle sizes, including grades fine enough for use as antiblocking agents for films. Products contribute to high filler loadings, increased flow, improved surface finish and hardness, and reduced shrinkage and warpage.
Also offers Z-Light Spheres, low-density (0.6-0.7 g/cc), hollow ceramic microspheres with moderate strength (3000-4000 psi compressive strength) and white color. Reduce density and enhance performance of cultured marble, SMC, and BMC. Used in syntactic foams, marine construction materials, engineering and aerospace composites, and light molded parts.
TEKNOR COLOR CO.
DIV. OF TEKNOR APEX CO.
Mineral filler concentrates available in various thermoplastic resin carriers and in a range of filler loadings. Custom filler concentrates with additive and processing-aid packages available.
Aluminum flakes and fibers for plastics requiring electrical and/or thermal conductivity. EMI shielding and electrostatic and heat dissipation applications. Also zinc flat fibers for electrostatic dissipation in flooring.
Fiberfrax alumina-silica fiber reinforcing filler with low thermal expansion, thermal stability, corrosion resistance, wear resistance, and resistance to moisture absorption. Various lengths, diameters, surface areas, and chemistries, which are modified by surface treatments.
UNIMIN SPECIALTY MINERALS INC.
Offers silica, nepheline syenite, and feldspar. Whole-grain and ground silica offered for polyester and epoxy systems.
High-quality nepheline syenite is good for thermoplastics where color is important. Nepheline also used in PVC and polyester gel coats to maintain color clarity, and in BMC for patio furniture or microwave cookware that's resistant to staining. Also a proven antiblock for PE where clarity is important.
U.S. GYPSUM CO.
Anhydrous calcium sulfate in two particle sizes: Snow White filler (8-micron average) and CA-s (2-micron average). Snow White filler is primarily used in PVC resins and plastisols, and BMC. It is particularly useful when acid resistance, high loadings and white color are necessary. CA-5 is successful in thermoset polyesters for electrical applications.
Both fillers can be used to extend rigid and flexible thermoplastics, and reinforced and unreinforced thermosets. They are relatively soft (2.5 to 3.0 Mohs scale), which results in reduced equipment wear, and are very white in color (averaging 98 on the Beckman scale).
CAS-20-4 anhydrous calcium sulfate is an extremely white, finely divided particulate filler with average particle size of 4 microns and top size of 20 microns. Manufactured by controlled calcination, fine grinding, and air separation of high-purity gypsum rock. Calcination process substantially reduces its moisture affinity. Recommended for thermoplastics, thermosets, and plastisols. Approved for food-packaging applications because of its high purity and food-acid resistance. Suitable for plastics requiring high filler loadings and balanced physical properties. Can partially replace titanium dioxide because of its high brightness.
U.S. SILICA CO.
Min-U-Sil micronized silica from 5 to 40 micron top size; Sil-Co-Sil ground silica from 40 to 125 micron top size; and SnowTex calcined kaolin clay.
Min-U-Sil and Sil-Co-Sil contain at least 99.5% pure [SiO.sub.2] and are used in products requiring rigid control of physical and chemical properties. Durability and chemical inertness suit them to epoxies and unsaturated polyesters.
Snow-Tex, a superior [TiO.sub.2] extender for PVC systems, has a high covering power, gives desirable flow properties and reduces the amount of costly pigments required.
R.T. VANDERBILT CO., INC.
Nytal tales in five grades have average particle sizes of 2.3 to 38 microns.
Wollastonite (calcium meta-silicate) for polyesters, nylon and other resins. Three grades offered: Vansil W-10 (2% retained on 200 mesh), Vansil W-20 (2% retained on 325 mesh), and Vansil W-30 (0.06% retained on 325 mesh).
Clay products in different particle sizes include Dixie clay (0.2-micron average) and McNamee clay (2-micron).
Also Canadian-mined platy talc for PP.
WASHINGTON PENN PLASTIC CO., INC.
Filler concentrates for PP and PE.
WHITTAKER, CLARK & DANIELS, INC.
Functional pigments, chemicals and fillers including zinc, calcium and magnesium metal stearates (USP, FDA and Kosher), precipitated barium sulfate, barium sulfate, hydrated alumina, zinc sulfide, magnesium oxide, zinc oxide uv and hydroxide, calcium carbonate and sulfate, clay, mica, polymer talc and bentonite.
ZEMEX INDUSTRIAL MINERALS
Mineral fillers and extenders include phlogopite mica, platy talc, barytes, and calcium carbonate.
Mica properties provide superior flexural strength, high modulus of elasticity, and good heat distortion resistance. Wet and dry ground grades provide a full range of products for reinforcing PP, PE, ABS and other resins. Surface-treated grades provide additional properties for high-temperature applications.
Platy tales are pure and low in iron and available in grades that include high brightness, high purity, and medium particle size from less than 1 to 13 microns.