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Mold-Release Agents.

PRODUCT LINES REVIEWED

ADELL PLASTICS, INC.

Proprietary silicone fluid concentrates for all thermoplastics improve mold release, reduce overall cycle time, reduce rejects, and improve part wear and bearing properties.

AIRTECH ADVANCED MATERIALS

Release All environmentally friendly release agents for metal and plastic molds contain no CECs, low VOCs, and are nonRed Label. Products can work up to 900 F and clean off easily. Safelease 30 PTFE-based, nonsilicone release agent has no solvents and is 100% water-based.

AKZO NOBEL INC.

Interstab G-8257 additive-type internal mold release for use in a number of polymer applications. FDA-approved, 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, at levels of 0.20-1.50 phr, provides external lubrication or mold-release properties.

Armoslip slip agents add slip and antiblock characteristics and serve as internal mold releases. Products reportedly speed up molding and extrusion, and give 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 products as they cool.

ALGEOUP LONZA

See Lonzagroup.

AMERICHEM INC.

Specialty lubricant concentrates for most thermoplastics reportedly improve wear resistance and mold release, reduce warpage and rejects, lower material and energy costs, make finishing easier, and reduce tool wear. Available in cubes, pellets or as powders, offered alone or in multifunctional concentrates.

AXEL PLASTICS RESEARCH LABORATORIES, INC.

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

Water-based releases for PUR, rubbers, composites molded with polyester, epoxy, vinyl ester, phenolic and melamine resin systems. Available in high solids and 100% water-based, or with solvents for faster evaporation.

Paste Wiz polymer and wax blend release agent for mold surfaces.

Solvent-based releases and aerosols for injection molding and applications that require rapid evaporation of mold-release carriers. Water- and solvent-based semi-permanent releases for fiberglass.

Mold Wiz internal release agents are nonexuding 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. Eliminate flow marks and buildup. Improve resin flow, promoting better wetting of reinforcements, substrates and mold surface. Also allow faster cycles at lower temperatures and provide added antistatic properties. Molds remain clean; no solvent vapors released. Molded parts ready for painting, bonding, printing or metallizing without degreasing. Some products FDA-approved.

BAKER PETROLITE, POLYMERS DIV.

Synthetic polyethylene-based low-molecular-weight polymers and related derivative products as mold-release agents, high-molecular-weight dispersion surfactants, and antiblocking agents for polyurethanes, polystyrenics, and polyolefins in film, foam, and injection molding applications. FDA-compliance on many products.

BASF CORP., CHEMICALS DIV.

Luwax PE and montan waxes for use as lubricating, wetting and mold-release agents, as well as dispersants for pigments and fillers. Compatible with a wide variety of TPUs, nylon, PC and ABS. Can be extruded, injection and blow molded. In extrusion, products reportedly allow control over plastication time and maximum torque, and reduce tack and improve gloss of finished goods. In film processes these waxes reportedly reduce tack without affecting film transparency and do not plate out. (See ad p. 366-Tab.)

CAMIE-CAMPBELL, INC.

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

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

CHEMLEASE INTERNATIONAL, INC.

Supplies over 200 internal and external release agents and additives for most molding applications. Products include sacrificial and semi-permanent releasants as well as mold cleaners and sealers. Markets served: automotive, aerospace, composites, marine, and all other FRP manufacturing processes.

CHEM-TREND INC.

External mold releases for FUR molding include water- and solvent-based pro- ducts for sound insulation, energy absorbing, integral skin, microcellular, flexible, and RIM foam systems.

Mono-Coat semi-permanents available in water- and solvent-based forms for rubber, thermoplastics, FRP, RTM, and rotational molding processes. Thermally stable to 700 F, providing multiple releases with no mold buildup or transfer to the part.

Custom formulated releases to meet specific processing needs.

CLARIANT CORP.

Custom-formulated mold-release concentrates for thermoplastics. Multifunctional concentrates contain mold releases and colorants. Come in powdered or pellet form.

CLEARCO PRODUCTS CO., INC.

High-performance silicone spray release agent for molded materials formulated without methylene chloride or trichloroethane. Product dries instantly, meets FDA specifications, is nonflammable, and does not contain any Class I ozone-depleting chemicals.

COGNIS CORP.

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

Also polymeric polyfunctional esters such as Loxiol G705 for mold release in rigid and flexible PVC.

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

CRODA UNIVERSAL, INC.

Crodamide lubricant additives used to reduce the coefficient of friction, improve mold flow, and mold release in FE, FP, PET, PS, PVC, nylon, and other specialty engineering resins. These high purity additives do not contribute to mold build-up.

CROMPTON CORP., OSI

Silicone fluids in a range of viscosities, plus organomodified fluids. Both are used as internal lubricants and mold releases for thermoplastics. 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. Also provide lower melt viscosity, resulting in better mold fill-out and reduced cycle times in injection molding. Reported to be excellent internal mold releases, reducing or eliminating need for external releases.

CROMPTON CORP. POLYMER ADDITIVES

Internal mold-release additives include Kemamide E, S, B and U primary fatty amides for PE, PP, PS, PVC, PUR and elastomers as mold-release, slip and anti-blocking agents.

Hystrene fatty acids recommended as mold releases and lubricants in PS.

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

MoldPro internal mold-release agents and processing aids for polyolefins, engineering resins and elastomers.

Nucleating agent MoldPro 932 for improving clarity of molded PP objects when used with mold-release agent Kemamide E Ultra fatty amide.

DEXTER CORP.

From Ceara Products Div., mold-release waxes made from refined No. 1 carnauba wax. Build-up is said to be reduced and color transfer eliminated. Waxes thoroughly cured before shipment and ready for immediate use in fiber-reinforced plastics, cultured marble, and polymer concrete.

From Frekote Div., Frekote mold-release products for elastomeric, thermoset, and thermoplastic molding applications:

* Frekote 44-NC/55-NC semi-permanent, nontransferring releasing interface for molding fiberglass, graphite, and boron reinforced epoxy and BMI composites.

* Frekote 700-NC/770-NC general-purpose, semi-permanent release agent for operations requiring high slip, as in filament winding.

* Frekote FRP-NC polymer releasing interface for molding fiberglass boats, tubs, shower stalls, and cultured marble sinks. Suitable for RTM.

* Aqualine water-based products, providing performance equal to traditional solvent-based release agents, are suited for molding rubber parts or composite parts from heated molds.

* Frekote CFC-free mold sealers and release agents for polyester, rubber, composite, epoxy and rotomolded PE applications where safety and environment are concerns.

D-M-E CO.

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

DOW CORNING CORP.

Silicone fluids, coatings, dispersions and emulsions as internal and external mold releases for use with most plastics, urethane, metal, and rubber mold materials.

Silicone fluids in a range of viscosities are essentially nontoxic and present a very low environmental hazard. Thermally stable and 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.

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

Emulsions may be nonionic or anionic and can generally be applied by brushing, spraying or wiping. Offer good lubricity, stability and water-repellency. Used with acrylics, epoxies, elastomers and castings.

DUPONT CO.

Krytox dry-film lubricants offer semi-permanent release properties in a variety of plastic and rubber molding applications and provide a highly nonstick surface, which is chemically inert, nonflammable, and thermally stable to 500 F. Krytox is a clear, ultra-low molecular weight, PTFE-based liquid dispersion that dries into a film. Krytox DF, DF/IPA and DF/W dispersions available as concentrates in 14 lb, isopropyl alcohol and water allowing user to customize the dispersion for ease of application and adequacy of coverage. Specially formulated, ready-to-use Krytox products also available as release agents for specific applications.

EASTMAN CHEMICAL CO.

Epolene polyolefin waxes offered as extrusion lubricants for rigid PVC. Also useful as processing and mold releases for ABS, polyesters, PC, nylons, polybutylenes, and PE.

FERRO CORP., PLASTICS COLORANTS & DISPERSIONS DIV.

Synpro metallic stearate lubricants Synpro calcium stearate 15F and SynproFlo 92 for flexible and rigid PVC are easily dispersed, low-dusting, high-bulk and granular. Synpro calcium stearate 114-36, 114-40, and Synpro zinc stearate 8 for HDPE, LLDPE and PP. Synpro zinc stearate XRP mold-release agent for reinforced plastics features more efficient release, improved surface, more rapid wet-out, lower mix viscosity, and improved handling characteristics. (See ads pp. 327, Cover IV.)

FRANKLYNN INDUSTRIES, INC.

QS9000/ISO9001 certified company offers Diamondkote and Aqualift solvent-free, water-based release agents bond to the tool surface, enabling multiple releases and increased productivity. Products decrease build-up on tool surfaces and parts and extend tool life between cleanings. Nonsettling and freeze-thaw stable. Applications include rigid PUR, RIM, and integral-skin foams; polyester FRP for bathtubs, spas, showers, cultured marble, and boats; thermoplastics; and epoxy and polyimide.

GE SILICONES

Silicone mold-release additives for molded plastics.

GLS COMPOSITE MATERIALS DIV.

External release agents for fiberglass reinforced plastics.

HATCO INC.

External spray and wipe-on mold releases.

HENKEL CORP.

See Cognis Corp.

IMS CO.

External mold releases in EPA-current aerosol cans and aerosol tanks, or as bulk concentrates. Silicone releases stocked in various concentrations. Paintable releases include organic oil, water-soluble ester spray, dry film with Krytox, dry spray with Teflon, and zinc stearate. Three nonflammable mold releases also stocked.

Exclusive Econo-Cube system, a preplumbed, turnkey package for applying pure mold-release fluid using compressed air.

From Bargain Basics Div., silicone and paintable external mold releases in aerosol cans comply with EPA ozone-depletion standards. (See ad p. 269.)

KRAS CORP.

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

LILLY INDUSTRIES

Two grades of internal release agents for unsaturated polyester compounds for FRP. One is for steel molds and the other for aluminum or plastic tools.

LONZAGROUP

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

Also Glycolube esters (ranging from glycerol monostearates and oleates to pentaerythritol tetra-stearate) as internal lubricants and mold-release agents. (See ad p. 316-Tab; data sheet p. 364.)

MERECO PRODUCTS DIV. METACHEM RESINS CORP.

Metapart 7521 silicone and Metapart 7582 fluorocarbon external mold-releases available in bulk packaging.

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. Mold-Ease uses water as propellant and is environmentally safe.

M. MICHEL AND CO., INC.

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

Michel XO-24 integral processing additive for use in resins such as linear FE and PVC. Components are FDA-approved for food-contact applications and can be used as a release agent inherent in its functions as an antistatic agent. Michel XO-24 improves mold release and destaticizes without significantly reducing surface resistance of molded or cast resin.

PATCO ADDITIVES DIV.

Offers glycerol esters with a range of particle sizes that function as mold-release agents. Pationic 901 and 902 fine beads act as internal mold releases in polyolefins as well as providing antistatic and lubrication benefits. Pationic 909 and 919 very fine beads are beneficial in rotational-molding applications by aiding in mold release and effective blending of pigments and colorants.

PENRECO

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

PLASTIC PROCESS EQUIPMENT, INC.

Silicone mold-release agents include Econo-Spray standard 6% concentration and 15% high concentration. Hi-Line silicone spray designed specifically for molding styrenes and other plastics sensitive to solvent contact.

Nonsilicone agents include EconoSpray paintable, Hi-Line spray paintable, dry powder with Teflon, dry waxy with Krytox, zinc stearate, neutral oil and lecithin. Formulas are suitable for applications involving decorating or printing. Bulk formulas available. Mold cleaners and rust preventive sprays also available. (See ad p. 299.)

POLYVEL INC.

Specialty additive concentrates in powder or pellet form include:

* RZ40 for nylons, ABS, and PS reportedly develops excellent mold-release properties and lubrication at use levels of 0.5-1.0%

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

PRICE-DRISCOLL CORP.

Universal and plastic-specific aerosol mold releases include Bomb-Lube yellow label multipurpose and Bomb-Lube blue label paintable multipurpose. Ultra II Parfilms for polyester, epoxy and urethane resins are synergistically blended for each application. Precision formulas for special applications include acrylic, general-purpose PS, nylon, PC, PE and PP. Ultral II Anti-Stick is FDA-approved for primary and secondary food contact.

All products available as aerosols in pressurized spray cans and 50-lb cylinders as well as nonaerosol bulk packaging of full-strength or diluted solutions.

ROGER A. REED INC.

Offers synthetic wax internet lubricants and mold releases.

RHODIA HPCII

Offers cetyl alcohol NF and cetylstearyl alcohol as mold releases in plastics.

SHERWIN-WILLIAMS CO. SPRAYON/KRYLON SPECIALTY DIV.

Two lines of mold-release agents in nonozone-depleting formulations contain no CFCs or HCFCs. Premium 800 series and Economy 300 series are safe on most plastics, have low or no odor, and are fast-evaporating for less mess and no residue. Products include food-grade silicone, heavy-duty paintable, dry film Vydax, dry powder zinc stearate, paintable lecithin, urethane and styrene silicone, and heavy-duty silicone formulas. USDA- and FDA-approved. Also full line of Sprayon chemicals and Krylon paints in over 300 colors.

SILOGRAM LUBRICANTS CORP.

Offers silicone mold releases.

SLIDE PRODUCTS INC.

Releases in various formulations; most are 100%-free of ozone depleting chemi-cals. Light-, medium- and heavy-duty formulations include E/S environmentally-safe water-based releases, economical Econo-Spray releases, silicone and non-silicone releases, releases for medical products, food-approved releases, and releases for post decoration. Products come in aerosol and bulk formulations.

SMOOTH-ON, INC.

Mold-release agents are solvent-based, water-based, semi-permanent coatings and 100% solids. Will custom formulate.

SPECIALTY PRODUCTS CO.

Full range of external and internal release agents and processing aids for thermosets and thermoplastics.

KantStik line of CFC-free, semi-permanent products for advanced composites and reinforced plastics provides a total release system for most applications and includes KantStik Sealer for the elimination of mold porosity on virtually any mold surface. Can be used in conjunction with KantStik SPC or KantStik 94X for multiple releases with no transfer. KantStik cure-fast sealer/release agent combined in one product is newly developed for all epoxy and polyester molding processes.

Evergreen products, developed to meet environmental safety standards, in-clude water-based release agents and nonozone depleting aerosols.

KantStik Q Powder and KantStik S Powder internal lubricants for thermo-plastics are said to increase resin flow into deeper recesses and sections of mold cavities.

STEPAN CO.

Zelec release agents recommended as internal release additives in polyester, vinyl and specialty resin systems. Effective in composite manufacturing processes such as SMC/BMC and pultrusion.

New line of viscosity modifiers and additives act as both release agents and viscosity modifiers for resin-filled composite systems.

STONER, INC.

External mold-release agents meet UL and FDA requirements. Silicone, nonsilicone and paintable release agents available. Products packaged in ozone-friendly aerosols and bulk liquid containers. Also mold cleaners and rust preventives in aerosol or bulk.

SUMMIT PRECISION POLYMERS CORP.

Micronized PTFE and PE waxes and blends with other micronized polymers for molding and extrusion.

SYNAIR CORP.

Line of release agents prevents adhesion in casting and molding. Synlube 531, 1000, 449 and 1711 products range from wax-based to silicone-based.

TEKNOR COLOR CO.

Internal mold-release concentrates in various thermoplastic and engineering resin carriers can include other additives. Custom concentrates simplify handling and eliminate multiple weigh-up errors.

THERMOFIL, INC.

Thermolube processing-aid concentrates for use with all thermoplastics.

TIODIZE CO., INC.

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

WACKER SILICONES CORP.

Range of silicone external release agents provides defect-free surfaces for better quality and low rejection rates. Features include temperature stability, low surface tension, and uniform wetting on various mold surfaces. Products provide multiple releases and long shelf life.

WITCO CORP.

See Crompton Corp.

ZIP-CHEM PRODUCTS

Environmentally driven products offered to meet high-technology specifications for markets such as pharmaceuticals, electronics, and aerospace. Products available with FDA and UL ratings. Specializes in environmentally safe maintenance products developed to maximize productivity and life of molds. Mold-release agents, cleaners and corrosion preventatives available from distributors nationwide.
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Publication:Plastics Technology
Date:Sep 1, 2000
Words:2995
Previous Article:Lubricants and Processing Aids.
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