Multifunctional acrylate N-vinylamide anaerobic adhesive composi

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

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156331, 260 17R, 260876R, 526217, 526259, 526260, 526265, 526303, C08F12400

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active

041044584

ABSTRACT:
A solventless, fast-setting anaerobic adhesive composition comprises two monomer parts which are adapted to be copolymerized anaerobically at ambient temperature between opposing surfaces to form a high-strength bond thereto. One part comprises a multifunctional acrylate monomer and the other an N-vinylamide monomer. The formulation also includes a redox system consisting of oxidizing and reducing agent components for initiating polymerization between said monomers. The oxidizing agent of the redox system may be present in either one of said parts, preferably with the multifunctional acrylate. The reducing agent is present in the other part, usually the N-vinylamide. Upon anaerobic admixing of the resective parts of the composition at ambient temperature, the oxidizing and reducing agents react to generate free radicals which initiates copolymerization of the monomers to form the desired high-strength adhesive bond to said surfaces.

REFERENCES:
patent: 3275611 (1966-09-01), Mottus et al.
patent: 3419512 (1968-12-01), Lees et al.
patent: 3940362 (1976-02-01), Overhults

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