POLYMER COMPOSITION Russian patent published in 2011 - IPC C09D175/14 C09D109/00 

FIELD: chemistry.

SUBSTANCE: composition contains isocyanate hardener, urethane-formation catalyst, a rubber base and a mixture of 2,4 and 2,6-isomers of 3,5-dimethylthiotoluylene diamine. The rubber base contains low-molecular hydroxyl-containing rubber, a plasticiser, filler, an antiageing agent and a pigment. The isocynate hardener is a prepolymer obtained by reacting 4,4'-diphenylmethane diisocayanate and oligodiene diol with molecular weight 2000-2200, content of hydroxyl groups of 1.2-1.9% with the ratio of isocyanate to hydroxl groups equal to 2:1 with content of isocyanate groups in the prepolymer equal to 4-5%.

EFFECT: obtaining coatings with high strength, hardness and elasticity.

6 cl, 2 dwg, 2 tbl