Redox cure system for acrylic adhesive compositions

Details Redox cure system for acrylic adhesive compositions Redox cure system for acrylic adhesive compositions

1984-10-18

1986-02-11

Wong, Jr., Harry

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526220, 5263231, C08F 400, C08F12020, C08F 440

Patent

active

045699763

ABSTRACT:
Improved cure system for two-part acrylic adhesive compositions comprising, as a first part, a polymerizable composition of a vinyl, especially acrylate or methacrylate, monomer or monomers, optionally a polymer or oligomer, or a polyfunctional methacrylate and a peroxidic catalyst, and a second part, being an activator containing a monosubstituted thiourea, having a heteroatom in the beta or gamma position relative to the nitrogen bearing the substituent. The disclosed catalyst cure system markedly increases the rate or redox initiated polymerization of the acrylate based adhesives, and gives greater on-part life for the activator.

REFERENCES:
patent: 2139697 (1939-12-01), Salzberg
patent: 2365035 (1944-12-01), Yooker
patent: 2380618 (1945-07-01), Stewart et al.
patent: 2430591 (1947-11-01), Stewart
patent: 3625930 (1971-12-01), Toback et al.
patent: 4460760 (1984-07-01), Okamoto et al.
patent: 4467079 (1984-08-01), Heckenberger et al.

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