FIELD: chemistry.
SUBSTANCE: invention relates to adhesive compositions based on an ethylene copolymer with vinyl acetate used as an adhesive when applying anticorrosive and protective coatings to metal surfaces, and also as melt adhesives and sealants in other industries. The proposed composition contains, wt. %: ethylene copolymer with vinyl acetate 78-93; γ-aminopropyltriethoxysilane 1-3; rosin 2-5; mineral filler mica 1-7, quinoxalyl substituted nitrosopyrazole, such as 3-(3,5-dimethyl-4-nitroso-1H-pyrazole-1-yl)quinoxalin-2(1H)-one, or 3-(3-methyl-4-nitroso-5-phenyl-1H-pyrazole-1-il) quinoxalin-2(1H)-oh, or 3-(4-nitroso-3,5-diphenyl-1H-pyrazol-1-yl)quinoxalin-2(1H)-oh 3-7.
EFFECT: adhesive composition obtained according to the invention has increased cohesive and adhesive strength, thermo-oxidative stability, water and alkali resistance of its adhesive bonds with metal, resistance of these bonds to thermal cyclic effects.
1 cl, 10 ex, 6 tbl
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Authors
Dates
2022-10-19—Published
2021-12-21—Filed