LAMINATE OF VULCANIZABLE RUBBER COMPOSITION LAYERS, PROCESS FOR PRODUCING RUBBER LAMINATE, AND RUBBER LAMINATE

摘要

A laminate of vulcanizable rubber composition layers, which comprises (i) a vulcanizable fluororubber composition layer comprising a fluororubber and a metal oxide and (ii) a vulcanizable nitrile rubber composition layer comprising a nitrile rubber, an organic phosphonium salt of the following formula (l), an organic peroxide crosslinking system, and an organic basic vulcanization accelerator: CHEM wherein R1, R2, R3 and R4 are hydrocarbyl, and no more than three thereof may be amino or fluoroalkyl; and R5 is hydrogen or alkyl. A vulcanized laminate made of the vulcanizable rubber composition layers is useful for a fuel hose or a diaphragm.