High molecular weight polyisobutene rubber has excellent properties such as high mechanical strength, high reactivity, high wear resistance, high slip resistance, and high airtightness. After polymerization reaction with epoxy based polylactic acid, it is very suitable for making high-performance foam materials.

High molecular weight polyisobutene is bonded with silane groups and undergoes cross-linking reaction with water vapor in the air at room temperature and under the action of catalysts, which weakens the cold flow characteristics of polyisobutene, improves the high temperature resistance and wear resistance of the composition, and maintains the original super tensile strength, airtightness, and ozone aging resistance of polyisobutene.