| abstract |
A rubber-metal adhesion promoter, characterized in that it contains a metal salt (1) of a carboxylic acid or a compound (2) represented by the following general formula (A), and the metal salt (1) of the carboxylic acid is A metal salt of an aliphatic carboxylic acid having 2 to 25 carbon atoms, the metal is bismuth, copper, antimony, silver or niobium, and in formula (A), Z is selected from the following formulas (z-1) to (z -4), M is bismuth, copper, antimony, silver or niobium, (RCOO) is a residue of an aliphatic carboxylic acid having 2 to 25 carbon atoms, and X is (valence of M -1). [(R COO) x MO] 3 Z...(A) |