COMPOUNDING AGENT FOR RUBBER VULCANIZATION CONTAINING AMINE SALT COMPOUND OF CARBOXYLIC ACID GROUP-CONTAINING DISULFIDE, METHOD FOR PRODUCING THE SAME, RUBBER COMPOSITION CONTAINING THE SAME, AND PNEUMATIC TIRE USING THE SAME IN RUBBER FOR BELT COAT AND/OR BELT EDGE CUSHION

摘要

A compounding agent for rubber vulcanization comprising an amine salt compound of a carboxylic acid group-containing disulfide having the formula (I): wherein R 1 , R 2 and R 3 are independently hydrogen or a C 1 -C 20 organic group which may have a heteroatom and/or a substituent group, and X is a C 2 -C 20 organic group which may have a heteroatom and/or a substituent group, a method for producing the same and a rubber composition containing the same, capable of improving the vulcanization rate and vulcanized rubber physical properties, without having a detrimental effect on the scorch time.