METHOD OF PRODUCING EPOXY RESIN CURING AGENTS Russian patent published in 2014 - IPC C08L63/00 

FIELD: chemistry.

SUBSTANCE: invention relates to production of epoxy resin curing agents used to prepare epoxy compositions with improved processing properties and minimal toxicity, which enable to produce composite materials with high strength, thermophysical and dielectric properties. The method of producing epoxy resin curing agents involves reacting a liquid or molten aromatic, aliphatic, cycloaliphatic or alkylene aromatic di- or polyamine (B) with cycloaliphatic or aliphatic-cycloaliphatic dioxides (A) with excess amine, after which acrylate (V) and amino alcohol (G) are added to the obtained mixture and the reaction mixture is stirred for 20-180 minutes at T=30-180°C.

EFFECT: high stability of the obtained curing agents during storage and transportation and improved dielectric properties at high temperature.

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