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News
March 27, 1995 01:00 AM

TEKNOR APEX TPES RESIST WEATHER, HEAT

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    Teknor Apex Co.'s new thermoplastic elastomers with high compression set resistance are aimed at automotive, construction, appliance and medical markets. Uniprene 7000 TPEs are highly cross-linked, dynamically vulcanized compounds that resist chemicals, weather and high temperature, the Pawtucket, R.I., company said.

    Shore hardness grades of 55A to 40D are available. The compounds can be processed by injection, extrusion and blow molding.

    The firm supplies Uniprene in pellet form at list prices of $1.48-$2.50 per pound, depending on grade.

    Tel. (401) 725-8000, or fax (401) 725-8095.

    Eastman brightener removes yellow tint

    Eastman Chemical Co. has introduced a brightener that helps companies overcome unwanted, initial yellow tint in a range of white or lightly colored thermoplastics.

    Eastobrite OB-3, based on stilbene chemistry, is effective at concentrations as low as 0.005 percent in polyester recycling and for polystyrene, ABS, polypropylene, ethylene vinyl acetate and polycarbonate, the Kingsport, Tenn., company said. It may have compatibility problems in polyethylenes.

    Eastman claims the additive has high permanence and temperature stability.

    It supplies the additive as a powder or as a masterbatch at a price of about $31.50 per pound for minimum quantities of 5,000 pounds.

    Tel. (800) 327-8626, or fax (615) 224-0648.

    BASF copolymer withstands weather

    BASF Corp. developed a weather-resistant acetal copolymer available in black and specialty colors.

    Ultraform N2320-U017 has a high-performance, ultraviolet-light stabilization package that does not affect the resin's inherent mechanical properties, the Parsippany, N.J., company said.

    Its notched Izod impact strength at room temperature is 1.3 foot pounds per inch vs. 1.12 foot pounds per inch for a carbon-black stabilized copolymer, the company said.

    BASF targets interior automotive parts for the new material.

    Tel. (800) 227-3746, or fax (201) 335-6730.

    Film/fiber additive available for trial

    Kenrich Petrochemicals Inc. has a nonblooming zirconate-based antistatic additive for film and fibers available for trials.

    Ken-Stat KS MZ100 is heat resistant to 377.6§ F, about 59§ F higher than previous titanate-based antistats, the Bayonne, N.J., firm claims.

    Kenrich claims film remains clear and colorless when the additive is used. It is available as a liquid and as a 60 percent active silica powder masterbatch.

    Tel. (800) 542-2574, or fax (201) 823-0691.

    Eastman Chemical

    offers reinforced PET

    Eastman Chemical offers reinforced PET

    New reinforced PET polymers for injection molding from Eastman Chemical Co. of Kingsport, Tenn., are designed for better mold flow in intricate parts molding for electrical and electronics applications.

    Eastman claims 30 percent better flow than competing products without loss of mechanical and thermal properties. The polymers are made flame-retardant with a nonbromine, halogenated product.

    Products in the Thermx PET EG7XX series have glass-fiber loadings of 15-40 percent. They can crystallize in hot-water-heated molds, eliminating the need for hot-oil heated molds.

    Tel. (800) 327-8626, or fax (615) 229-8595.

    AlliedSignal provides fluoropolymer films

    AlliedSignal Inc. of Morristown, N.J., has developed two pharmaceutical grades of fluoropolymer film with improved moisture barrier resistance.

    Aclar SupRx 900 and AclarUltRx 2000 are thin-gauge films based on chlorinated tetrafluoroethylene that provide high clarity and resistance to chemicals and yellowing.

    The company claims the films can be thermoformed on existing blister packaging equipment. They are cost-effective alternatives to foil structures, reducing package size and costs, the firm said.

    Tel. (201) 455-5010, or fax (201) 455-3507.

    E/M Corp. reveals polymer lubricant

    E/M Corp. introduced a wet-surface, self-lubricated polymer for cams, gears, bushings and similar moving-part applications.

    Glidestar 500 is a patented blend of acetals and other polymers containing oils that provide continual lubrication in long-term use.

    Unlike dry-lubricated compounds, they have initial low coefficient of friction without a ``breaking-in'' period, according to the Everett, Wash., company.

    Properties include tensile strength of 5,903 pounds per square inch, compressive strength of 6,662 psi, and flexural strength of 5,412 psi.

    E/M supplies the compound as pellets for injection molding at a price of about $6-$8 per pound. The company, a subsidiary of Great Lakes Chemical Corp., plans to offer it in sheet stock.

    Tel. (206) 787-1068, or fax (206) 787-1070.

    Teknor PVC series touts color stability

    Teknor Apex Co. has introduced clear, flexible PVC compounds with improved color stability after gamma radiation sterilization.

    Teknor claims Apex 90-A471R-NT can withstand up to 10 megarads of gamma radiation with minimal color shift.

    The series of compounds has hardness of 60-990 Shore A, tensile strength of 1,550-3,350 psi and tensile elongation of 360-450 percent, the firm said. Targeted applications include infusion kits, drip chambers, dialysis kits and intravenous systems.

    Tel. (401) 725-8000, or fax (401) 725-8095.

    Multipolymer sheet looks like acrylic

    Cyro Industries' new multipolymer sheet combines visual appeal of acrylic with high impact strength.

    Cyrolite HP is designed for point-of-purchase displays and can be processed like acrylic sheet. Its impact strength allows it to compete with glycol-modified sheet in these applications.

    Cyrolite HP has notched Izod impact strength of 0.7 foot-pounds per inch of notch and Gardner impact strength of 35 inch-pounds. It resists most chemicals, oils and aliphatic hydrocarbons.

    Tel. (201) 442-6000, or fax (201) 442-6117.

    Fire-retardant colors receive UL approval

    Underwriters Laboratories Inc. of Melville, N.Y., has approved a new line of flame-retardant color concentrates for nylon 6/6 resins developed by Polymer Concentrates Inc. of Clinton, Mass.

    The company has developed a line of color concentrates that are heavy metal free and have UL's V-2 flame-retardant approval, said Dik Betzig, product manager and director of sales and marketing for the company.

    The line has 20 standard colors, and can be used to make a variety of custom colors for nylon 6/6 made by Monsanto Chemical Co. and Dupont Co., Betzig said.

    The colorants have the V-2 approval for Monsanto's 21SP and 24NSL grades, and for Dupont's 101F grade of nylon 6/6. Polymer Concentrates is seeking to extend the UL approval to resin grades supplied by other manufacturers, he said. The colorants have a 50-to-1 letdown ratio.

    Tel. (516) 271-6200, or fax (516) 271-8259.

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