POLYURETHANE PROTECTIVE COMPOSITION Russian patent published in 2019 - IPC C09D175/08 C08L75/08 C08K3/32 

FIELD: chemistry.

SUBSTANCE: invention relates to a composition of polyurethane protective compositions for producing coatings and can be used for protection of metal, concrete, reinforced concrete, wooden surfaces of building structures from corrosion and action of aggressive media. Polyurethane protective composition contains polyoxypropylene glycol with molecular weight 1000, polyisocyanate based on 4,4'-diphenylmethane diisocyanate, triethanolamine, orthophosphoric acid, toluene, acetone.

EFFECT: invention increases by 2–2,4 times adhesion of the coating to peel, by 2,4–3 times reduction of strength of the film material at tension, up to 3,5–4,5 times of the modulus of elasticity of the film material based on the polyurethane protective composition.

1 cl, 2 tbl