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Mold-release agents.

ACCURATE COLOR INC.

Offers lubricant powder, pellet, and liquid dispersions, which can function as slip and antiblock agents, mold releases, pigment dispersants, and gloss modifiers. Can be compounded with other additives.

ADELL PLASTICS, INC.

Proprietary concentrates of silicone fluids available for all thermoplastics. Concentrates are said to improve mold release, reduce overall cycle time, reduce rejects, and improve part wear and bearing properties. Multifunctional concentrates also offered.

AIR PRODUCTS AND CHEMICALS INC.

Water-based external release agents are said to allow excellent release and reduced build-up on molds, and eliminate VOC emissions. Sprayable release-agent concentrates, which reduce VOC emissions by lowering release agent use, also offered.

AIRTECH ADVANCED MATERIALS AIRTECH INTERNATIONAL INC.

Release All "environmentally friendly" release agents for metal and plastic molds contain no CFCs, low VOCs, and are non-Red Label. Products can work up to 900 F and clean off easily. Water-based formulas also are offered.

AKZO NOBEL INC.

Interstab G-8257, an additive-type internal mold-release agent is for use in a number of polymer applications. FDA-approved, its physical properties include a melting point of 288-295 F. In rigid PVC, G-8257 improves melt-flow characteristics and yields products with reportedly good surface finish, color and physical properties. In flexible PVC and plastisols, G-8257 may be used at levels of 0.20-1.50 phr to provide good external lubrication or mold-release properties.

Armoslip slip agents reportedly add not only slip and antiblock characteristics, but also serve as internal mold releases. Products are said to speed molding and extrusion, and give products a smooth surface, high gloss, and close conformity to mold details. These high-molecular-weight fatty acid amides dissolve in resins at processing temperatures but migrate to the surface of finished products as the resins cool.

ALLIEDSIGNAL INC.

Offers A-C polyethylenes and copolymers that are ethylene-based, low-molecular-weight polymers for use as lubricants, flow modifiers, release aids, and dispersion aids. Products reportedly improve release properties of thermoplastic resins, increase output, improve surface quality of the finished product, control melt temperature, increase thermal stability, reduce machine torque, and decrease power consumption. They are said to wet and disperse inert materials, such as pigments, carbon black, flame retardants, and fillers.

AMERICHEM INC.

Produces specialty lubricant concentrates for most thermoplastics. These concentrates reportedly improve wear resistance and mold release, reduce warpage and rejects, lower material and energy costs, make finishing easier, and reduce tool wear. They are available in cubes, pellets or as powders, and are offered alone or in a multifunctional concentrate incorporating other additives and colors as specified.

AXEL PLASTICS RESEARCH LABORATORIES, INC.

Provides Mold Wiz external mold releases, proprietary complex polymeric blends containing no wax, silicone or metallic stearate. Also, no CFCs or 1,1,1-trichloroethane.

New water-based line for polyurethanes, rubbers, composites molded with polyester, epoxy, vinyl ester, phenolic and melamine resin systems. Available in high solids and 100% water-based or with small amounts of solvents for faster evaporation.

Paste Wiz polymer and wax blend release agent is for all types of mold surfaces.

Offers solvent-based releases and aerosols for injection molding and applications requiring rapid evaporation of mold release carriers.

Mold Wiz INternal release agents are non-exuding complex polymeric blends with no wax, silicone or metallic stearate. Mixed into thermoplastics, thermosets and rubbers at 0.1-1% levels by weight. Perform as processing aids and mold releases. Flow marks and buildup eliminated. Resin flow improved, promoting better wetting of reinforcements, substrates and mold surface. Also allows faster cycles at lower temperatures and added antistatic properties. Molds remain dean; no solvent vapors released. Molded parts ready for painting, bonding, printing or metallizing without degreasing.

Some products FDA-approved.

BASF CORP., CHEMICALS DIV.

Luwax polyethylene and montan waxes are for use as lubricating, wetting and mold-release agents, as well as dispersants for pigments and fillers. Line is compatible with a wide variety of thermoplastic polyurethanes (TPUs), nylon, polycarbonate and ABS. Products can be extruded, injection and blow molded. In extrusion they reportedly allow control over plastication time and maximum torque. They are also said to reduce tack and improve gloss of finished products. When used in film processes, these waxes reportedly reduce tack without affecting film transparency and do not plate out.

CAMIE-CAMPBELL, INC.

Manufactures external release agents, primarily for injection molding, but including compression molding, extrusion and RIM.

Also offers a broad range of paintable and silicone-based products. Silicone materials run from very light-duty film-forming sprays to heavy products specifically designed for rigid polyurethane foams. Paintable releases are available as dry, lecithin-based lubricants, as well as light-duty and heavy-duty. All products available in aerosol packages or in 5-gal or 55-gal bulk containers.

THE CARBORUNDUM CO. BORON NITRIDE DIV.

Boron nitride is an inorganic mold-release agent that maintains its properties through numerous mold cycles and at elevated temperatures. In liquid form it can be applied as is or diluted and sprayed onto molds to reduce sticking and improve release characteristics.

CEARA PRODUCTS, INC.

Offers mold-release waxes made from refined No. 1 carnauba wax. The process to compound carnauba into mold-release products uses no acid or borax additives, and no silicone, acetate or paraffin fillers. Build-up is said to be reduced and color transfer eliminated.

Waxes are thoroughly cured before shipment and ready for immediate use in fiber-reinforced plastics, cultured marble, and polymer concrete.

CHEMAX, INC.

Chemstat HTSA-1A and HTSA-3B are specially synthesized nitrogenous organic compounds for use in most thermoplastics as mold-release additives, and slip and antiblocking agents.

Chemstat HTSA-1A is used as an additive to impart improved release properties in polypropylene film. It provides slip and antiblocking characteristics at low use levels (0.05-0.50%) for extrusion of film and sheet.

Chemstat HTSA-3B, a white free-flowing powder, is effective in a variety of thermoplastic resins such as cellulosics, polyolefins, PVC and nylons. It can reportedly be incorporated into high-clarity thermoplastic film without impairing optical properties. Film subjected to high-humidity environmental tests remains clear with no evidence of slip additive plate-out. HTSA-3 is effective at low use levels--0.05-0.40%

CHEM-TREND INC. PLASTICS & RUBBER DIV.

Manufactures external mold-release agents that include water-based and CFC-free products for flexible and rigid polyurethanes, reinforced polyester, rotomolding, thermosets and thermoplastics molding. Perma-Mold releases are designed specifically for rigid urethane foam. Mono-Coat semi-permanent formulations can double mold productivity while giving multiple releases, and do not build up on the mold or transfer to the part. Company can custom formulate releases for specific applications.

CRODA UNIVERSAL, INC.

Crodamide fatty-acid amide lubricant additives are for improved mold flow and mold release in PE, PP, PET, PS, PVC, nylon, and other specialty engineering resins. These high purity additives minimize dye mold build-up.

DEXTER CORP.

Frekote semi-permanent external release agents polymerize and chemically bond to molds to form a micro-thin film. Products do not transfer to the molded part, provide multiple releases per application, and are thermally stable at high molding temperatures. CFC-free, solvent-based products available are:

* Frekote 44-NC for molding epoxy, polyester, polyethylene and polycarbonate.

* Frekote 700-NC all-purpose, easy-to-use release for most rubber and plastic applications.

* Frekote FRP-NC high-gloss release for molding polyester boats, tubs, shower stalls, cultured marble, and high-temperature thermoplastics such as PEEK

* Frekote B-15 seals microporosity on metal tooling.

* Frekote PMS seals macroporosity on composite tooling.

Aqualine C-200, water-based semi-permanent release agents are for use in aerospace/non-aerospace composite applications. Product offers the same multiple releases per application, non-contaminating transfer, and high thermal stability as solvent-based Frekote products. Contain no CFCs, VOC of less than 300 mg/liter, and no chlorinated, aromatic or petroleum-based solvents.

D-M-E CO.

Three grades of low-build-up, spray-on mold-release agents available in 16-oz cans. An all-purpose silicone grade provides dependable performance for most applications at an economical price. A premium silicone grade is available for tougher sticking problems and is FDA-approved for food industry applications. The third grade, a paintable mold release, is available for parts to be painted, plated or hot-stamped. Silicone-free, this grade is suitable for use with PS and most other resins.

DOW CORNING CORP.

Manufactures silicone fluids, coatings, dispersions and emulsions as internal and external mold-release agents. Products available for use with most plastics, urethane, metal and rubber mold materials.

Silicone fluids offered in a wide range of viscosities are essentially nontoxic and present a very low environmental hazard. Thermally stable, they are available in industrial, food and medical grades.

Release coatings include quick-curing silicone resins, paintable-materials, 100% silicone fluids and resin/fluid blends. Some products approved for food processing and packaging operations.

Dispersion products include room-temperature vulcanizing elastomers that cure to a tough, rubbery coating. Good release from sticky materials, and effective from -57 [degrees] to 204 [degrees] C.

Emulsions may be nonionic or anionic, and can generally be applied by brushing, spraying or wiping. They offer good lubricity, stability and water-repellency. Available for use with acrylics, epoxies, elastomers and castings.

DUPONT CO.

Vydax fluorotelomer dispersions are used as external mold-release agents and dry lubricants. Product is said to be virtually unaffected by mold materials, even those made of difficult-to-release materials such as epoxy resins. Six grades are available, differing mainly in active ingredient content, molecular weight and dispersity in water. Low molecular weight of Vydax imparts lubricity, thermal and chemical stability, nonflammability, and antistick and release properties, which maintain integrity in a broad range of operating conditions. Vydax is dean and nonmigrating.

EASTMAN CHEMICAL CO.

Epolene waxes, low-molecular-weight polyolefins and glycerol monostearates, are offered as extrusion lubricants for rigid PVC. They are also useful as processing and mold-release lubricants for such polymers as ABS, polyesters, polycarbonates, nylons, polybutylenes and PE.

GE SILICONES

Offers silicone mold-release additives for molded plastics.

PERCY HARMS CORP.

See Slide Products Inc.

HENKEL CORP.

Manufacturers of glycerol fatty esters as internal or external lubricants for PBT or PET polyesters and PVC formulations. Supplied in solid and liquid forms. Helps increase production rates, reduce melt temperatures and reduce power consumption.

Provides polymeric polyfunctional esters, such as Loxiol G70S for mold release in rigid and flexible PVC.

Other esters, such as Loxiol HOB 7119, are suitable mainly for PVC, but also effective as mold releases for acrylics, acetals and polycarbonate. Simple esters include Loxiol G33 and Loxiol G47 for polycarbonate.

IMS CO.

Offers external mold releases in non-CFC aerosol cans and in giant aerosol tanks, or as bulk concentrates for use with solvent carriers or compressed air. Silicone releases are stocked in various concentrations. Paintable releases include organic oil, water-soluble ester spray, DuPont Vydax, dry PTFE, and zinc stearate.

KRAS CORP.

External mold-release agents include a spray-on, carnauba m-based product.

LILLY INDUSTRIES

Offers two grades of internal release agents for unsaturated polyester compounds for FRP, one for steel molds, and one for aluminum or plastic tools.

LONZA INC.

Acrawax C ethylene bis-stearamide wax additive is available in a wide range of particle sizes, including a dispersion grade. Product provides an exceptional balance between internal and external lubricity, as well as release properties.

Glycolube esters (ranging from glycerol monostearates and oleates to pentaerythritol tetra-stearate) also offered as internal lubricants and mold-release agents.

MALLINCKRODT SPECIALTY CHEMICALS CO.

High-purity metallic stearates for use as internal/external lubricants include:

* Hy Dense calcium stearate HP granular and RSN powder for rigid PVC pipe and siding lubrication.

* Calcium stearate RSN 248D for dean neutralization of residual catalysts in polyolefins.

* Magnesium stearate RSN 1-1 for lubricating all ABS resins.

* Zinc stearate RSN 131 HS for superior clarity/color stability in crystal PS.

* Hy Dense zinc stearate XM powder for low viscosity and good mold release in polyester SMC and BMC.

* Hy Dense zinc ultrafine as a dispersion and for color concentrates.

GEORGE MANN & CO.

Aqualease 2802 water-based external mold release for polyurethanes reportedly eliminates break-in problems common to water-based release agents. A proprietary emulsion in Aqualease 2802 eliminates sticking problems, which can happen during the first few cycles because of urethane build-up on the mold surface. The need to season molds with silicone greases or other substances is eliminated, resulting in faster start-ups.

Ease Release 200 and 300 are topical release agents for urethane and epoxy casting and molding. Permalease 3000 and 3500 are semi-permanent coatings for rubber, polyester, and epoxy composites. Permalease 2264 is for urethane HR foam and urethane elastomers where nontransfer and multiple release is needed.

A. MARGOLIS & SONS CORP.

Offers silicone mold releases.

MERIX CHEMICAL CO.

Mold-Ease PCR liquid external release agent can be used in very small amounts (0.01-0.05%). It is said to be nonflammable, odor- and color-free and to contain no silicones, so that products can be painted, printed, or metallized without costly wash-up.

M. MICHEL AND CO., INC.

Cachalot plastics additive S-53T3 is a higher-alcohol-based extrusion, casting, and calendering aid primarily for flexible PVC to prevent plastic from sticking to molds and dies.

Michel XO-24 is an integral processing additive for use in resins such as linear polyethylene and polyvinyl chloride. Its components are FDA-approved for food-contact applications, and it can be used as a release agent, inherent to its functions as an antistatic agent. Michel XO-24 improves mold release and destaticizes without significantly reducing surface resistance of molded or cast resin.

MRS CHEMICALS, INC.

Offers Internal mold-release agents for PVC dispersions. These non-silicone liquids provide good release for a variety of mold compositions and designs without plateout or haziness in cured vinyl.

PARK CHEMICAL CO.

Offers external release agents for polyurethane molding, including conventional solvent-based and water-based agents for flexible, semi-rigid, rigid, integral skin, pour-in-place, microcellular, and RIM foams. Custom-designed products are available for specialty applications, including automotive modular glass, steering wheels and interior trim.

PENRECO DIV. PENNZOIL PRODUCTS CO.

Offers white mineral oils and petrolatums as external or internal mold releases. All USP and NF grades meet FDA regulations for food-contact use.

PETROLITE CORP. POLYMERS DIV.

Manufactures microcrystalline waxes and synthetic polymers as lubricants, mold-release agents, dispersing aids in color concentrates, nucleating agents (EPS), and antiblocks (PP film) for thermoplastic resins. Microcrystalline waxes are derived from petroleum and are high-molecular-weight mixtures of straight and branched-chain hydrocarbons with melting points from 170 to 200 F. Many are suitable for food contact.

Polywax PE waxes are low-molecular-weight, high-density, crystalline polymers. Melting points range from 185 to 260 F. Many reportedly meet FDA requirements and have been used to improve EPS appearance, and to optimize cost/performance of rigid PVC pipe. Zylac lubricants for rigid PVC may lower the cost per linear foot of pipe and profile extrusions.

Vybar polymers are low-melting (125-165 F) hydrocarbons used as modifiers for paraffin wax, mold-release agents, and lubricants in rigid PVC.

POLYVEL INC.

Provides specialty additive concentrates in powder or pellet form:

* RZ40 is for nylons, ABS and PS. It is said to develop excellent mold-release properties and lubrication at use levels of 0.5-1.0%

* RE40 is for PP, PE and EVA, and reportedly reduces mold sticking and improves part release at use levels of 0.5-1.0%.

PROGRESSIVE POLYMERS

Internal mold release additive concentrates available in a variety of thermoplastic resin carriers. Other additives combined to supply all needs in one concentrate. Custom concentrates simplify handling and eliminate multiple weigh-up errors.

ROGER A. REED INC.

Manufactures synthetic wax internal lubricants and mold releases.

REEDSPECTRUM DIV. SANDOZ CHEMICALS CORP.

Offers custom-formulated mold-release concentrates for thermoplastics. Multi-functional concentrates containing mold releases and colorants also available. Products come in powdered or pellet form.

RHONE-POULENC INC.

Alkalube glyceryl, simple, and complete esters function as internal, external, or intermediate lubricants and flow modifiers for rigid PVC, polycarbonates, phenolics, acrylics, and nylons.

SLIDE PRODUCTS INC.

Provides water-based and environmentally safe mold releases, which include ODC-free Slide mold releases, cleaners, purging compounds, lubricants and specialty products.

New Quick II silicone, paintable and lecithin mold releases work effectively at all temperatures and contain no Class I or II ozone depleting chemicals.

SPECIALTY PRODUCTS CO.

Offers broad line of external mold-release agents/lubricants for reinforced-plastics. Internal release/lubricant processing aids for layup, SMC, BMC and pultrusion eliminate need for costly application prior to molding. Semi-permanent releases and mold sealers for RTM, filament winding and press molding also available.

KantStik products provide total release systems for most applications. KantStik Sealer for elimination of mold porosity on any mold surface can be used with KantStik SPC or KantStik 94 for multiple releases with no transfer.

STONER, INC.

External mold-release agents meet UL and FDA requirements. Non-silicone and paintable release agents also available. All products packaged in ozone-friendly aerosols and bulk liquid containers. For maintenance, organic mold cleaners and ozone friendly rust preventives available.

SYNAIR CORP.

Offers a line of release agents to prevent adhesion in casting and molding. Synlube 531, 1000, 449 and 1711 represent the product line that ranges from a wax base to silicones.

SYNTHETIC PRODUCTS CO.

Synpro metallic stearate lubricants offer grades tailored for specific applications. For flexible and rigid PVC, Synpro calcium stearate 15F and Synpro-Flo 92 are said to be easily dispersed, low-dusting, high-bulk, granular products. For HDPE, LLDPE and PP, Synpro calcium stearate 114-36, 114-40, and Synpro zinc stearate 8.

THERMOFIL, INC.

Thermolube processing-aid concentrates are for use with all thermoplastics. Advantages are said to include faster cycle times, better mold release, lower energy consumption due to lower stock temperatures, and cycle-time reductions of over 10%. Products are also reported to be more economical than aerosol spray release agents.

TIODIZE CO., INC.

Offers Tiolon X20 PTFE external mold-release agent and lubricant for injection molding. Product dries in minutes and increases service life; and there is no transfer or build-up. It is translucent with a very thin film thickness of 0.0002 to 0.0007 in., and is resistant to fluids, chemicals, abrasion, and corrosion. Tiolon X20 can also be used to lubricate anodized aluminum by impregnating the oxide layer, which reportedly extends wear life and provides excellent release characteristics. Product is supplied in aerosol or bulk form.

UNION CARBIDE CHEMICALS & PLASTICS CO.

Manufactures silicone fluids in a range of viscosities, plus organomodified fluids. Both are used as internal lubricants and mold releases for thermoplastics. A typical product is L-45, used at viscosities of 10,000 to 60,000 cst.

Silicone fluids reduce coefficient of friction, improve wear resistance, and may improve surface appearance and gloss of molded parts. They also provide lower melt viscosity, resulting in better mold fill-out and reduced cycle times in injection molding. They are reported to be excellent internal mold releases, reducing or eliminating the need for externally applied mold-release agents.

WACKER SILICONES CORP.

Offers a range of silicone external release agents that provide defect-free surfaces for better quality and low rejection rates. Features include temperature stability, low surface tension, and uniform wetting on a variety of mold surfaces. Products provide multiple releases and excellent shelf life, says the company.

WILSON COLOR INC.

A UNIT OF M.A. HANNA CO.

Offers silicone concentrates in 15-20% loadings for use with ABS, acetal, nylon 6, 66, and 612, polycarbonate, PBT polyester, PP, PE, PS and SAN.

Also produces Wil-Lube concentrates of stearates or other lubricants in a multipurpose resin compatible with a variety of thermoplastics, including vinyls, polyolefins, styrenics, acrylics, cellulosics, polyesters and nylons. They are nonstaining, noncorrosive, and low in volatility.

WITCO CORP. POLYMER ADDITIVES GROUP

Offers internal mold-release additives:

* Kemamide E, S, B and U primary fatty amides for use in PE, PP, PS, PVC, PU and elastomers as mold-release, slip and antiblocking agents.

* Hystrene fatty acids recommended as mold-release agents and lubricants in PS.

* Atmos 150, Atmul 84 and Dimul S food-grade, mold-release, antistatic and antifogging agents for polyolefins and PVC.

* MoldPro series of internal mold-re-lease agents and processing aids for polyolefins, engineering resins and elastomers.

ZENITH CUTTER CO.

Offers chemical release agents for uses ranging from light-duty to heavy-duty. Bulk quantities available for some products.

ZIP-CHEM PRODUCTS

External mold-release products are offered to meet high-tech specifications for markets such as pharmaceuticals, electronics, and aerospace.
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Copyright 1994, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Title Annotation:Manufacturing Handbook & Buyers' Guide 1994/95
Publication:Plastics Technology
Article Type:Directory
Date:Jul 15, 1994
Words:3266
Previous Article:Lubricants and processing aids.
Next Article:Antioxidants.
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