Patent ID: 8618222

Claim:
A curable composition comprising: A. a fluoroelastomer comprising copolymerized units of a nitrile group-containing cure site monomer; and B. an hydroxylamine derivative of formula R 1 (C(O)) n NHOR 2 wherein n is 0 or 1; R 1 is H, C(O)R 3 , C(O)R 4 , C(O)OR 3 , or C(O)SR 3 ; R 2 is H, C(O)R 3 , or C(O)OR 3 ; R 3 is C 1 -C 20 alkyl group, aryl, heterocycle, benzyl, 9-fluorenylmethyl, or CH 2 R 4 ; and R 4 is a fluoroalkyl group, with the proviso that R 1 and R 2 cannot simultaneously be H.