BINDER FOR PREPREGS AND METHOD OF PRODUCING SAID BINDER Russian patent published in 2012 - IPC C08L63/00 C08K13/00 C08L67/02 C08G59/72 

FIELD: chemistry.

SUBSTANCE: invention relates to production of polymer materials meant for producing prepregs. The binder contains epoxy triphenol resin - triglycidyl ether 1,1,3-tri(oxyphenyl)propane, epoxy-diane resin, thermoplastic polyester with molecular weight of 30000 and a hardener. The hardener is a product of reacting diglycidyl ether of diethylene glycol and a boron trifluoride complex with benzyl amine in ratio of (2.5:1). The method involves the following steps: obtaining a product of reacting diglycidyl ether of diethylene glycol and a boron trifluoride complex with benzyl amine by gradually adding the complex to the resin heated to (50-55)°C in ratio of (1:2.5) for 1 hour; mixing for 1 hour; adding the obtained product to a prepared melt of epoxy resins in a mixture with polyester.

EFFECT: invention enables to avoid use of solvents and increases heat-resistance and impact viscosity of composite materials in the articles.

2 cl, 2 tbl, 3 ex