COATING COMPOSITION Russian patent published in 2003 - IPC

FIELD: polymers. SUBSTANCE: invention relates to composites of film-forming polyurethane compositions and can be used as protective coating for wood, concrete, glass and metal. Invention describes the coating composition including the following components, mas. p. p.: polyoxypropylenetriol of molecular mass 3000-5000 Da, 100; polyisocyanate based on 4,4'-diphenylmethanediisocyanate, 100-200; ethyl acetate, 35-40; butyl acetate, 30-40; toluene, 20-35; and hydrochloric acid, 0.05-0.1. Said composition promotes to the enhancement of strength properties of coatings prepared on its base and decrease of the composition hardening time. EFFECT: improved properties of composition. 1 cl, 1 tbl, 9 ex