Accelerators for curable acrylate ester compositions

Details Accelerators for curable acrylate ester compositions Accelerators for curable acrylate ester compositions

C - Chemistry, Metallurgy

08

F

402/122, 402/247

C08F 20/20 (2006.01) C08F 20/34 (2006.01) C09J 4/00 (2006.01) C09J 5/04 (2006.01) F16B 39/00 (2006.01)

Patent

CA 1109596

A B S T R A C T Curable acrylate ester compositions having as an accelerator for the polymerization a hydrazine derivative of the formula R1-HN-NH-CO-R2 and as a co-accelerator, an acid having a pKa of less than about 6. The compositions may optionally be formu- lated as two-part compositions with the non ester-containing part being applied as a primer. Typical of the monomers are the polyalkylene glycol dimethacrylates and the so-called urethane acrylates. Polymerization is preferably initiated by a peroxy compound such as cumene hydroperoxide, such a composi- tion having anaerobic curing characteristics.

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