COMPOSITION FOR COATINGS Russian patent published in 2001 - IPC

FIELD: compositions for coatings, more particularly protection of various surfaces predominantly building structures and components and equipment form atmosphere, water and aggressive media (acids alkalis) effects. SUBSTANCE: composition comprises isocyanate component and toluene. Isocyanate component is essentially mixture of polyphenylene polymethylene polyisocyanate mixture treated with air at temperatures from 150 to 180 C and at atmospheric pressure for 2-6 hours. To 100 wt parts of polyphenylene polymethylene polyisocyanate mixture thus treated are added 2-11 weight parts of bitumen and/or 2.5-3.1 weight parts of solid waste resulting from processing and storage of mixtures of polyphenylene polymethylene polyisocyanates. Coal-tar resin or coal-tar varnish are added to composition in amount from 2.2 to 5.4 wt parts per 100 wt parts of mixture of isocyanate component and toluene. EFFECT: high strength and water resistance of the composition. 2 cl, 23 ex