| abstract |
A cure accelerator for anaerobic curable compositions such as adhesives and sealants is provided, which is defined with reference to the compound represented by structural formula I below. <Structural Formula I> In the above formula, A is CH 2 or benzyl, R is C 1-10 alkyl, R' is H or C 1-10 alkyl, or R and R' together represent a 4- to 7-membered ring fused to a benzene ring. R" is optional, but when R" is present, R" is halogen, alkyl, alkenyl, cycloalkyl, hydroxyalkyl, hydroxyalkenyl, alkoxy, amino, alkylene-ether or alke nylene-ether, alkylene (meth)acrylate, carbonyl, carboxyl, nitroso, sulfonate, hydroxyl or haloalkyl, and the EWG shown is an electron withdrawing group such as nitro, nitrile, carboxylate or trihal It is roalkyl. |