FIELD: chemistry.
SUBSTANCE: powdered epoxy coating composition for coating a substrate contains: (a) about 50 wt % to about 90 wt % of at least one epoxy resin; (b) about 1 wt % to about 30 wt % of at least one catechin novolac type adhesion promoter; and (c) about 0.1 wt % to about 5 wt % magnesium oxide. The coating can also contain about 10 wt % to about 48 wt % inorganic filler.
EFFECT: improved adhesion during operation in high temperature conditions and improved resistance to damages as a result of cathode decomposition for pipes, reinforcement bars and other substrates.
12 cl, 4 tbl, 4 ex
