EPOXIDE COMPOSITION Russian patent published in 2002 - IPC

FIELD: polymer materials. SUBSTANCE: invention relates to epoxide compositions used to sticking repair patch pieces onto pipes and metallic structures to cover small defects as anticorrosive coatings. Composition contains, wt parts: 4,4'-isopropylidene epoxide resin, 100; mixture of polyoxychloroprolylene-triepoxide either with polyoxypropylene-epoxide with molecular weight 700 at weight ratio (4-9):1, or with polyoxychloroprolylenediepoxide containing 9-16% epoxy groups at weight ratio 1:1, 98-102; amine hardener, which is 4:3:3 mixture of polyethylene polyamine (or triethylene triamine), polyoxypropylene diamine, and amine hardener AF-2, 40-50; and carbon black, 15-25. Composition shows viscosity 13-17 Pa.s, tensile strength 55-65 MPa, adhesion to steel 36-40 MPa and to glass plastic 16-20 MPa. EFFECT: improved technological properties of composition and ensured endurance of principal physicochemical and performance characteristics during long period. 1 tbl, 6 ex