Patent ID: 7803882
Filing Date: 2010-09-28
Classification: B60C,C08C,C08L

Abstract:
1. A sulphur-crosslinked hydrogenated vinyl-polybutadiene, having compression set values in the range from a) 1 to 4.3% at 23° C./70 h, b) 2 to 22% at 70° C./70 h c) 5 to 60% at 100° C./70 h d) 8 to 70% at 125° C./70 h and e) 10 to 78% at 150° C./70 h and compressive stress relaxation values in the range from f) 2 to 8.6% at 23° C./168 h and said sulphur-crosslinked hydrogenated vinyl-polybutadiene prepared by crosslinking a hydrogenated vinyl-polybutadiene via sulphurs or in the form of sulphur donors, said hydrogenated vinyl-polybutadiene having a degree of hydrogenation in the range from 70 to 100%, a Mooney unit from 40 to 150 (ML 1+4/125° C.) and an enthalpy of fusion in the range from 0 to 10 J/g.