COMPOSITION FOR COVERS Russian patent published in 2007 - IPC C09D175/08 C08G18/65 C08L75/08 

FIELD: chemistry of polymers, covers.

SUBSTANCE: invention relates to compositions of film-forming polyurethane compositions. Invention describes a composition for covers comprising the following components, mas. p. p.: polyoxypropylenetriol of molecular mass 3000-5000 Da, 80-95; 4,4'-diphenylmethanediisocyanate-base polyisocyanate, 100-200; ethyl acetate, 35-40; butyl acetate, 30-40; toluene,20-35; concentrated hydrochloric acid, 0.05-0.1, and ethylene glycol, 5-20. Invention provides enhancing adhesion to metal by 2-2.5-fold (up to 8.2 MPa) and enhancing cover hardness by 1.5-1.6-fold (up to 0.85 a. u. by method M-3). Invention can be used in preparing a protective cover for wood, concrete, glass, metal.

EFFECT: improved and valuable technical properties of composition.

1 tbl, 29 ex