Non-black rubber membranes

摘要

A roofing membrane comprising an olefinic rubber; and from about 20 to about 250 parts by weight of a silica filler per 100 parts by weight rubber; wherein the silica filler is chemically coupled to the olefinic rubber; and wherein the roofing membrane is non-black.

主权项

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.