Medium molecular weight polyisobutylene is used to adjust properties such as flexibility, elongation, cohesive strength, and gas barrier performance of a product. They have an average molecular weight, Mw, of from 40,000 to 120,000 g/mol. Medium molecular weight polyisobutylene is primarily used in the manufacture of adhesives, sealants, chewing gums, and lubricants, among others. 更多
