| abstract |
The invention relates to the tire industry, in particular to the development of compositions for the impregnation of textile cord. The invention makes it possible to increase the strength of rubber bonding on the basis of SKI-3 with impregnated polyamide 23KNTS cord to 23.8 kgf, anidic cord 25A to 18.8 kgf, viscose cord 22B to 22.5 kgf due to the use of butadiene carboxyl-containing rubber or latex butadiene-2-methyl-5-vinylpyridine rubber or a combination thereof at a mass ratio of 1: 1, sucrose and a metal salt. Impregnating composition contains (on a dry basis), wt.h: the specified synthetic rubber latex 100n n n resorcinol formaldehyde resin 13-20n n n formaldehyde 4.8 - 8.4n n n sodium hydroxide 0.8 - 8.0n n n ammonia water (25%) 0.6 - 3.0n n n the water is gchenna 800 - 1800n n n sucrose 10-40 and a metal salt of 7-18, selected from the group consisting of copper sulphate and zinc, copper chloride or copper sulphate and zinc sulphate in a 4: 1 mass ratio, or copper sulphate and iron chloride in a 4: 1 mass ratio, or copper chloride and sulfate |