| abstract |
Fluoroelastomer compositions comprising fluoroelastomers having copolymerized units of a nitrile-containing cure site monomer are cured with certain carbazates. The carbazate is of the general formula R 1 OC(O)NHNHR 2 , wherein R 1 is 9-fluorenylmethyl, benzyl, aryl, or a heterocycle; R 2 is H, alkyl, aryl, heterocycle, CO 2 R 3 or CH 2 R 4 ; R 3 is alkyl, aryl, benzyl or a heterocycle; and R 4 is a fluoroalkyl group. |