CHEMICALLY STABLE POLYMERIC COMPOSITION FOR COATINGS Russian patent published in 1995 - IPC

FIELD: anticorrosive materials. SUBSTANCE: composition has, mas. p.: methylmethacrylate 100; polybutylmethacrylate 10-70; butylmethacrylate 5-60; polyisocyanate 10-40; benzoyl peroxide 0.1-10.0; dimethylaniline 0.05-2.00; divinylbenzene 0.1-10.00; perchlorovinyl resin 0.5-25.0; diethanolamine maleinate 0.01-0.50, and amine 0.01-1.00. Composition is prepared by mixing of polybutylmethacrylate powder with perchlorovinyl resin, mixture is dissolved in methylmethacrylate and butylmethacrylate at the room temperature at stirring. Then amine and diethanolamine maleinate were added, and divinylbenzoyl and dimethylaniline were added, stirred, and polyisocyanate and then benzoyl peroxide were added. Composition is applied on surface, hardened for 3-4 h; complete hardening is 10 days. Properties: adhesion strength after 360 days is 37.8-39.2 MPa, hydraulic stability in boiling water is 340-440 h, temperature of mass loss is 218.8 C. EFFECT: enhanced quality of composition. 2 tbl