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Kuraray elastomer features reactive hard blocks

Posted: 04 Feb 2004 ?? ?Print Version ?Bookmark and Share

Keywords:kuraray? septon v series? hydrogenated styrene thermoplastic elastomer? hydrogenated styrene elastomer? elastomer?

Kuraray Co. Ltd has developed the Septon V series of hydrogenated styrene thermoplastic elastomers or hydrogenated styrene elastomers that provide compounds with improved heat resistance and oil resistance.

Typical hydrogenated styrene elastomers are composed of hard block (styrene) and soft block (ethylene, propylene or butylene) polymers. As with other plastics, they are easily processed when heated. The elastomers also have the elasticity of rubber, which allows them to be used as a substitute for vulcanized rubber and flexible polyvinyl chloride.

Compounds produced using the elastomer feature low compression sets at high temperatures, better oil resistance and improved long-term durability characteristics. Unlike earlier Septon products, the Septon V series contains a crosslinkable hard block and makes it reactive.

The company has also developed a compounding technology which makes it possible to cross-link the hard block as well as the soft block during compounding. This provides a compound with higher heat and oil resistance, which makes them suitable for use in markets in which vulcanized rubber is used such as automotive sealing material and construction materials.

Target applications include automotive weather-stripping, automobile upholstery, air-duct covers and hoses, insulation of electric wires, window seals, gasketing and protective sheets.





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