| abstract |
A rubber laminate comprising a crosslinked rubber layer containing a carboxyl group-containing nitrile copolymer rubber (A), a carboxyl group-containing acrylic polymer (B) and a specific phosphonium salt, and a fluoropolymer layer. Preferably, the content of carboxyl groups per 100 grams of the component (A) is 2 × 10 −3 to 1 × 10 −1 equivalent, and the content of the carboxyl groups per 100 grams of the component (B) is 4 × 10 −4 to 1 × 10 − 1 equivalent, the weight ratio of (A) component and (B) component are 40: 60-90: 10, content of the phosphonium salt in the said crosslinked rubber layer is 0.5- per 100 weight part of total of (A) component and (B) component in total. 10 parts by weight. According to the present invention, in addition to oil resistance and gasoline permeability, there is provided a rubber laminate excellent in mechanical properties such as tensile strength, low compression set and permanent deformation, ozone resistance and interlayer adhesion. |