Patent ID: 6645641
Filing Date: 2003-11-11
Classification: B29C,B29D,B29K,B32B,C08J,Y10T

Abstract:
A method for improving the adhesion between a first layer comprising a first ethylene polymer and a contiguous second layer comprising a propylene polymer, which comprises:blending with the propylene polymer a second ethylene polymer formed by the polymerization reaction with a single site catalyst, the propylene polymer being an elastomeric terpolymer of ethylene, propylene and a monomer capable of imparting elastomeric properties to the terpolymer, the second ethylene polymer being an ethylene butene-1 copolymer, the blend having about 10 to about 15% of the terpolymer and about 85 to about 90 wt % of the ethylene butene-1 copolymer.