| 摘要 |
A roofing membrane composition comprising: (a) a first hydrolyzable polyolefin having a density less than or equal to 0.92 selected from the group consisting of (i) a copolymer of ethylene or propylene and silane and (ii) a silane modified polyethylene, polypropylene, or ethylene/propylene copolymer wherein, in (i) or (ii), the silane is present in an amount of about 0.5 to about 10 percent by weight based on the weight of the first polyolefin, said first polyolefin being present in the composition in an amount of about 20 to about 90 percent by weight based on the weight of the composition; (b) a second polyolefin selected from the group consisting of: (i) an ethylene-propylene-diene terpolymer rubber; (ii) a copolymer of ethylene and vinyl acetate; and (iii) a copolymer of ethylene and ethyl acrylate; said second polyolefin being present in the composition in an amount of about 10 to about 80 percent by weight based on the combined weight of the first and second polyolefins; (c) a particulate filler selected from the group consisting of carbon black and non-black reinforcing fillers, and mixtures thereof; and (d) an oil compound suitable for roofing membranes selected from the group consisting of paraffin oils, naphthenic oils, and liquid polybutene.
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