| abstract |
PURPOSE: To provide a rubber deterioration inhibitor which has an excellent effect of inhibiting the deterioration of rubber by ozone in particular, consisting of a specified dihydroquinoline compd. and a specified p-phenylenediamine compd. n CONSTITUTION: A rubber deterioration inhibitor consists of 6-anilino-2,2,4-trimethyl-1,2-dihydroquinoline (A) and an N-phenyl-N'-alkyl-p-phenylenediamine (B) (wherein the alkyl group is a 3W6C non-cyclic alkyl, such as N-phenyl-N'-isopropyl-p-phenylenediamine) in a ratio of A to B of 80:20W20:80. The inhibitor has an excellent effect of preventing rubber from being deteriorated, particularly due to ozone, which conventional ones do not have. Further, it is superior in resistance to flex and heat. n COPYRIGHT: (C)1985,JPO&Japio |