Importance

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Abstract

Long chain esters formed by reacting mono, di-, and/or tri-carboxylic acids containing one, two, or three C.sub.6-C.sub.24 long chain radicals or fatty acid residues, and alcohols containing at least one C.sub.3-C.sub.24 alkyl group, in a natural or synthetic vulcanizable or cross-linkable elastomer or rubber, when included with an adhesive resin, such as a melamine-containing resin or a phenol-, e.g., resorcinol-containing resin, e.g., a Novolak resin, unexpectedly increases the adhesion of one rubber or elastomer layer to another rubber or elastomer layer, even when the rubber/elastomer layers have substantially different polarities. Application of the adhesion promoters described herein is particularly contemplated for adhering one or more layers of difficulty adhered elastomers, such as fluorinated elastomers, to themselves, or to other elastomer layers that have similar or substantially different polarities.

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First Claim