| 摘要 |
PCT No. PCT/GB85/00167 Sec. 371 Date Feb. 3, 1986 Sec. 102(e) Date Feb. 3, 1986 PCT Filed Apr. 12, 1985 PCT Pub. No. WO85/04666 PCT Pub. Date Oct. 24, 1985.A curable coating composition is prepared from two components; (1) a component having more than one epoxide group (an epoxy resin) and (2) a component having more than one group reactive with the epoxy groups of components (1) (i.e., a polyhydric phenol). Either component (1) or (2) is the reaction product of a compound containing at least one primary or secondary amino group and at least one aliphatic hydroxyl group with an epoxy resin and optionally a component reactive therewith. This reaction product contains terminal aliphatic hydroxyl groups and epoxy groups or groups reactive with epoxy groups. The components (1) and (2) are preferably normally solid materials and the coating composition is a powder coating composition. The coatings prepared from these powder coating compositions which contain the adduct having both aliphatic -OH and epoxy or phenolic -OH groups exhibit significantly improved adhesion when applied to a metal substrate, including an untreated mild steel substrate, then a conventional epoxy resin, powder coating composition.
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