METHOD OF PRODUCING CURING AGENT FOR MEDIUM-MOLECULAR WEIGHT EPOXY RESINS

摘要

FIELD: chemistry.SUBSTANCE: invention relates to curing agents for epoxy resins and compositions based thereon. Disclosed is a method of producing an organosilicon curing agent for medium-molecular weight epoxy resins by reacting, for 2-3 hours at temperature of 80-100°C in the presence of an alkaline catalyst, an amine-containing organosilicon compound (I), an organosilicon compound with a phenyl group at the silicon atom (II) and an organosilicon compound containing two methyl groups at the silicon atom (III) with molar ratio of components I:II:III = 1.0:(0.5-1.0):(0.5-2.0) and total content of alkoxy groups to the total number of silicon atoms of 1-1.5.EFFECT: simple method of producing organosilicon curing agents that are stable during storage, which enable to obtain paint coatings with good adhesion to different substrates and improved physical and mechanical properties.1 cl, 3 tbl, 14 ex