Patent ID: 8791193
Filing Date: 2014-07-29
Classification: B29C,B29D,B29K,B32B,C08K,E04D,Y10T

Abstract:
1. A laminate membrane comprising: a first layer including an olefinic rubber including units deriving from ethylene, α-olefin, and diene monomer, where the olefinic rubber includes at least 1.5 percent by weight and less than 4 percent by weight units deriving from diene monomer; at least 20 parts by weight and less than 90 parts by weight titanium dioxide per 100 parts by weight rubber; and silica, where at least a portion of the silica is coupled to the elastomeric olefinic rubber; a second layer including cured elastomeric olefinic copolymer and carbon black; and optionally a scrim fabric.