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

摘要

A laminate of a layer of a vulcanizable fluororubber composition comprising a fluororubber and a metal oxide and a layer of a vulcanizable nitrile rubber composition comprising a nitrile rubber, an organic phosphonium salt represented by general formula (1), and organic peroxide-cross-linked and basic organic vulcanization accelerators, (wherein R1, R2, R3 and R4 represents each a hydrocarbon group and at most three of them may be amino or fluoroalkyl; and R5 represents hydrogen or alkyl). A laminate produced by vulcanizing and bonding the above laminates is useful as fuel hoses and diaphragms.