Patent ID: 7144962

Claim:
A method for surface treatment of rubber comprising the steps of causing a fluorine compound represented by the following formula (I) and a silane coupling agent to contact a surface of a rubber base comprising uncrosslinked rubber; and heat-treating the rubber base, wherein R F is a fluoroalkyl-containing group represented by —C q F 2q+1 , wherein q is an integer of 1 to 10 or —CF(CF 3 )[OCF 2 CF(CF 3 )] P OC 3 F 7 , wherein p is 0, 1 or 2, R 1 is a functional group having a reactivity to a hydrolyzable group selected from the group consisting of an alkoxysilyl group and an alkoxyalkoxysilyl group, R 2 is a hydrogen atom or alkyl group, R 3 and R 4 are the same or different from each other and are individually a hydrogen atom or a monovalent organic group selected from the group consisting of —CH 3 , —COOH, —COO(CH 2 ) 2 OH, —CO—N(CH 3 ) 2 and x is an integer of 1 to 100, and y is an integer of 0 to 500.