abstract |
A fluoroelastomer composition comprising a fluoroelastomer having copolymerized units of a nitrile-containing cure site monomer is cured to a predetermined carbazate. Carbamic J. teuneun general formula R 1 OC (O) NHNHR 2 ( wherein, R 1 is 9-fluorenylmethyl, benzyl, aryl, or heterocycle, and; R 2 is H, alkyl, aryl, heterocyclyl, CO 2 R 3 or CH 2 R 4 , R 3 is alkyl, aryl, benzyl or heterocycle, and R 4 is a fluoroalkyl group. |