Improved post-vulcanization bond

Abstract

The present invention provides a two-part adhesive system wherein the first part is a base adhesive comprising at least one of a polyurethane-based adhesive, an acrylic-based adhesive, or an epoxy-based adhesive; and the second part Elastomeric primer containing a halogenated polyolefin and optionally a nitroso compound. The present invention also provides post-vulcanization bonding methods for bonding elastomers to substrates using the adhesives described above.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application Serial No. 61 / 675,370, entitled "IMPROVED POST-VULCANIZATION BONDING," filed July 25, 2012, the disclosure of which is incorporated by reference. into this article. technical field [0003] The present invention relates to two-part post-cure adhesive systems, and post-cure bonding methods for elastomeric substrates. Background technique [0004] There has long been a need for strong adhesives and methods for bonding vulcanized rubber or other cured elastomers to metal and other substrates. In most rubber bonding processes, a conventional rubber-to-substrate adhesive (such as that sold by LORD Corporation) Adhesive) is applied to the metal part, which is then loaded onto a mold and unvulcanized rubber or other elastomer is injected into the mold. Next, the rubber-filled mold is heated so that the adhesive co-cures as the rubber vulcanizes. This...

AI Technical Summary

Problems solved by technology

Although these methods are sometimes effective, they often do not provide the desired good bond, and in particular the ability of these systems to maintain bond at elevated temperatures is often poor

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