Anaerobic curing composition and process for preparing same

Details Anaerobic curing composition and process for preparing same Anaerobic curing composition and process for preparing same

1979-06-22

1980-07-29

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, 526279, 526281, 526301, 526304, 526312, 526320, 5263231, 5263232, C08F 2214

Patent

active

042152097

ABSTRACT:
Improved 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 N-substituted sulfonamide and an aromatic tertiary amine. The resultant homogeneous mixture is thereafter maintained at a temperature of at least about 20.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.-80.degree. C. for 10-30 hours. In another embodiment, the mixture is maintained at an elevated temperature without stirring.

REFERENCES:
patent: 2628178 (1953-02-01), Burnett et al.
patent: 3483208 (1969-12-01), Bahr et al.
patent: 3795641 (1974-03-01), Lees et al.
patent: 3985943 (1976-10-01), Gruber et al.
patent: 4038475 (1977-07-01), Frauenglass et al.

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