Anaerobic curing adhesive composition and process for making...

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

C - Chemistry, Metallurgy

09

J

402/125, 402/187

C09J 4/00 (2006.01)

Patent

CA 1130048

ABSTRACT OF THE DISCLOSURE Storage-stable anaerobic curing adhesive compositions useful as anaerobic adhesives and sealants are prepared by first mixing a poly- merizable acrylate ester monomer, an inhibitor for free radical poly- merization, a chelator, and at least an effective amount of an accelerator system consisting of an organic cyclic sulfimide, prefera- bly saccharin, and an aromatic tertiary amine. The resultant homogen- eous mixture is thereafter heated at a temperature of about 45-100°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 45-70°C for 10-24 hours. In another embodiment, the mixture is maintained at an elevated temperature without stirring.

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