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US 4,617,227 AGranted
Asphalt elastomeric blends
AssigneeUniroyal Chemical Company, Inc.
InventorEbon P. Weaver
Life of this patent
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Abstract
A waterproof membrane useful as a coating or flashing for roofs or as a liner for containing liquids which comprises a composition containing a neutralized sulfonated EPDM polymer and asphalt, the former component comprising at least 30% by weight of the total weight of the polymer and asphalt. The composition has outstanding physical properties and an unexpectedly high tensile strength.
Claims11
An elastomeric composition comprising
- (a) asphalt;
- (b) preferential plasticizer;
- and
- (c) neutralized sulfonated polymer in a weight ratio of neutralized sulfonated polymer to asphalt of from about 30/70 to about 95/5.
1 more element
Dependencies are inferred from the claim text.