POLYURETHANE COATING Russian patent published in 2012 - IPC C09D175/00 C09D175/04 C09D191/00 E04F15/12 

FIELD: chemistry.

SUBSTANCE: polyurethane coating is made from a composition which contains refined castor oil, an ester, an antifoaming additive BYK-066 based on fluorine-modified polysiloxanes, aluminium oxide, titanium oxide, aerosil, a water adsorbent, an additive BYK-410 - urea in an organic solvent N-methylpyrrolidone, a curing agent isocyanate SUPRASEK 5025, which is 4,4'-diphenylmethane diisocyanate and additionally as filler - dolomite or zeolite or a mixture of dolomite and zeolite in ratio 3.25:1.

EFFECT: coating has high breaking strength and modulus of elasticity in tension, while providing sufficiently high deformation characteristics, particularly tensile elongation.

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