FAST HARDENING HOT CURING EPOXY COMPOSITION Russian patent published in 2015 - IPC C08L63/00 C08L63/02 C08L63/04 C08G59/00 C08G59/68 

FIELD: chemistry.

SUBSTANCE: invention relates to the field of epoxy compositions, in particular to fast hardening hot moulding epoxy compositions, used as a binder for the production of composite materials by methods of pultrusion, casting, autoclave moulding. A hot curing epoxy composition includes at least one epoxy resin or its mixtures with epoxy resins, an anhydride hardener and phosphonium salt as a catalyst, selected from the group of quaternary phosphonium salts of the general formula where R₁R₂R₃ are butyl or phenyl radicals, R₄ is an aliphatic radical, containing 2-14 carbon atoms, X-H, phthalimide, Br, COO^-, P(R₁R₂R₃)⁺, A^--Cl^-, Br^-.

EFFECT: invention makes it possible to reduce the time of the composition hardening, increase its viability in storage.

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