Kynar PVDF foam technology from Atofina

Kynar PVDF foam technology from Atofina

Additives for Polymers September 2001 MATERIALS Halogen-free polypropylene fibre from Mitsubishi Rayon In Japan, Mitsubishi type of polypropylene fi...

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Additives for Polymers

September 2001

MATERIALS Halogen-free polypropylene fibre from Mitsubishi Rayon In Japan, Mitsubishi type of polypropylene fire-resistant, but does compounds, according Business Daily.

Rayon has developed a fibre that is durable and not contain toxic halogen to a report in the Nikkei

The company plans to commercialize the new fibre from October, anticipating sales of 300-400 tonnes in the first year worth Y200-300 million (US$l&2.4 million). Mitsubishi Rayon makes the new fire-resistant libre by mixing its own polypropylene long filaments with a special fire-retardant made by Chiba Specialty Chemicals. The resulting tibres feature the same level of fire resistance as conventional polypropylene fibres treated with halogen compounds, Using the new fibre, Mitsubishi Rayon plans to work with construction fibre manufacturer Kyowa to develop construction safety nets, and with canvas product manufacturer Kanbo Pras to create various kinds of construction sheets. Contact: Mitsubishi Rayon Co Ltd, 6-41 Konan I -chome, Minato-ku, To90 108-8506, Japan; tel: +8I 3 5495 3100, fax: +81 3 5495 3184.

Kynar PVDF foam technology from Atofina Atofina Chemicals has unveiled a new technology for the manufacture of flexible or rigid fluoropolymer foams. The technology, based on Kynar@ polyvinylidene fluoride (PVDF) resins, produces foams of almost any thickness and configuration. The new Kynar resin-based foams exhibit excellent chemical resistance, stability at high temperatures, extremely low smoke and flame characteristics, water repellency, good UV resistance and weatherability, excellent mechanical properties, radiation resistance and low ionic extractability (high purity). The wide range of potential applications includes flame-retardant insulation, chemically

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resistant filters, high-purity polishing materials for electronics applications, moisture-resistant, breathable foams for sporting equipment, UVresistant outdoor decorations, temperature- and chemical-resistant gaskets, and encapsulated fabrics. The new foaming technology produces Kynar PVDF foam without chemical or physical blowing agents. The technology is claimed to make the foam more cost-effective and environmentally acceptable than alternatives. Contact: Ben Simkin, Atojina Chemicals Inc, 2000 Market Street, Philadelphia, PA 19103, USA; tel: +I 21.5 419 7921, fa: +I 215 419 7497.

Ciba Specialty Chemicals launches at K At this year’s K show in Dusseldorf, Ciba Specialty Chemicals will be promoting effects that can be created in end applications. The company will be presenting innovative solutions to enhance the durability, appearance and properties of polymers. Ciba Specialty Chemicals has developed and tailored Tinuvin@ XT systems to the needs of specific applications, including paintable and moulded-in-colour automotive TPOs, polyolelins for rooting membranes, and mouldedin-colour, impact-modified polypropylene for window profiles. The line offers superior weatherability and long-term thermal stability, and can be supplied in blends with other additives. The Tinuvin@ FR system was developed specifically to impart light stability and flame retardancy to polypropylene mouldings for exterior applications, such as stadium seats and other public outdoor furniture. Designed to protect package contents from UV light and extend shelf life, Ciba’s ShelfplusTM UV offers excellent processing stability and gives PET bottles broadband UV coverage. Ciba is now expanding its range of bactericides featuring silver-based antimicrobials from Kanebo. Irgaguard@ B products allow processing at temperatures well above those generally

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