Anaerobic curing adhesive composition and process for making sam

Details Anaerobic curing adhesive composition and process for making sam Anaerobic curing adhesive composition and process for making sam

1979-04-02

1980-11-25

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526279, 526292, 526301, 526303, 526304, 526305, 526309, 526312, 526313, 526321, 5263231, 5263232, C08F 2020

Patent

active

042359864

ABSTRACT:
Storage-stable anaerobic curing adhesive compositions useful as anaerobic adhesives and sealants are prepared by first mixing a polymerizable acrylate ester monomer, an inhibitor for free radical polymerization, a chelator, and at least an effective amount of an accelerator system consisting of an organic cyclic sulfimide, preferably saccharin, and an aromatic tertiary amine. The resultant homogeneous mixture is thereafter heated at a temperature of about 45.degree.-100.degree. C. for a period of time sufficient to provide the composition with anaerobic curing properties and a specified minimum amount of active oxygen. In one embodiment, the mixture is stirred at a temperature of 45.degree.-70.degree. C. for 10-24 hours. In another embodiment, the mixture is maintained at an elevated temperature without stirring.

REFERENCES:
patent: 2628178 (1953-02-01), Burnett et al.
patent: 3795641 (1974-03-01), Lees et al.
patent: 4038475 (1977-07-01), Frauenglass et al.
Lal et al, J. Pol. Sci., XXIV, pp. 75-84, (1957).

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