Patent ID: 6197841
Filing Date: 2001-03-06
Classification: C08J

Abstract:
A crosslinked ethylene-olefin copolymer foam which has a gel content of 70% to 99%, an apparent density of 0.2 to 0.02 g/cm.sup.3, 25% compression set at 40.degree. C. of 0.1 to 20.0%, 25% compression hardness of 0.1 to 1.0 kgf/cm.sup.2 and Asker C type surface hardness of 3 to 40, wherein the foam is foamed from a copolmer of ethylene and .alpha.-olefin having 3 to 18 carbon atoms, the copolymer having a melt flow rate (MFR) of 0.1 to 100 g/10 minutes, a critical shear rate (CSR) satisfying the equation: log[CSR].ltoreq.2.48+0.500.times.log[MFR], a density of 0.860 to 0.935 g/cm.sup.3, a Q value determined by size exclusion chromatography (SEC) of 1.5 to 4, and an extrapolated end temperature of melting (Tem) of 65.degree. to 130.degree. C.