HEAT-RESISTANT EPOXY BINDER FOR MAKING ARTICLES BY IMPREGNATION UNDER PRESSURE Russian patent published in 2016 - IPC C09J163/00 C08K5/3415 C08J5/24 C08K5/5419 B32B27/38 

FIELD: chemistry.

SUBSTANCE: invention relates to heat resistant epoxy binders for making by impregnation under pressure of articles from polymer composite materials used in aerospace engineering. Binder contains, wt%: multifunctional epoxy resin N,N,N′,N′-triglycidyl-4.4′-diamino-3.3′-dichloro diphenylenemethane with dynamic viscosity at 50 °C of not more than 10.0 Pa·s - 35.2-36.6; epoxy bismaleimide resin - 35.2-36.6; hardener - 4.4′-diaminodiphenylsulfone - 22.0-22.9, and one of active diluents selected from: 3-glycidyl oxypropyl trimethoxysilane - 3.9-5.4; mixture of 3-glycidyloxypropyltrimethoxysilane with product of polymerisation of epichlorohydrin in ratio of 1:1 - 5.4-6.9; mixture of 3-glycidyloxypropyltrimethoxysilane with allyl glycidyl ether in ratio of 2:3 - 6.9-7.6.

EFFECT: invention allows to reduce and reduce the price of process, increases technological effectiveness of binder, as well as providing higher protection of environment.

1 cl, 2 dwg, 2 tbl, 6 ex