Abstract
A completely saturated styrene-isobutylene based thermoplastic elastomer, under the trade name SIBSTAR, has been produced at the industrial scale for the first time. Main grades are triblock copolymer in 1he form of styrene-isobutylene-styrene (SIBS) and diblock ropolymer, styrene-isobutylene (SIB) of Mn range 40,000 to 100,000. Due to polyisobutylene, which is as same structure as butyl rubber used as damping material, being a major component, SIBSTAR is superior in damping propaties. Due to its tiiermoplasticity, SIBSTAR can be processed as plastics into various shapes. A variety of useful applications are being developed for SIBTAR, for example viscoelasutic damper for construction and others.
