COMPOSITION FOR COATS, SUMMARY Russian patent published in 2010 - IPC C09D175/14 C08L75/04 C08G18/69 

FIELD: construction.

SUBSTANCE: composition contains the following components, wt parts: 100 - rubber base, 26-44 - isocyanate hardener, 0.01-0.1 - catalyst of urethane formation and 1-2 - 3,3'-dichloro-4,4'-diaminodiphenylmethane. Rubber base consists of the following components, wt parts: 100 - low-molecular hydroxyl-containing rubber, 60-190 - plasticiser, 100-480 - filler, 1-2 - anti-ageing agent and 1-10 - pigment. Isocyanate hardener represents prepolymer with content of isocyanate groups of 4.0-5.0%. Prepolymer is produced by interaction of 4,4'-diphenylmethanediisocyanate and oligodiendiol with molecular weight of 2000-2200, with 1.2-1.9% content of hydroxyl groups, at the ratio of 2:1 of isocyanate and hydroxyl groups.

EFFECT: increased strength, elasticity and hardness.

6 cl, 2 tbl