POLYMER COMPOSITION Russian patent published in 2010 - IPC C09D175/14 C08G18/69 

FIELD: chemistry.

SUBSTANCE: invention relates to polymer compositions for elastomeric waterproofing, roof coating, floor and sports field coatings. The said composition contains 100 pts. wt isocyanate prepolymer, 3-30 pts. wt ethoxylated glycerin or glycerin, or trimethylol propane as a hardener and 0.005-0.01 pts. wt tin dibutyl dilurate. The isocyanate prepolymer used is obtained by reacting four moles of 4,4'-diphenylmethane diisocyanate and one mole of oligobutadiene diol with molecular weight of 2800-3200, containing 0.9-1.3% hydroxyl groups, while the prepolymer contains 8.0-9.7% isocyanate groups.

EFFECT: polymer composition provides improved strength properties of elastomers and coatings obtained from it, specifically higher strength, longevity, hardness and relative elongation of the coating.

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