| 摘要 |
The invention relates to a coating material containing a binder solution compose d of: (a) 30 to 70 wt.% of binder, (b) 2 to 30 wt.% of crosslinking agent, (c) possibly 1 to 7 wt.% of a neutralization agen t, and (d) 20 to 60 wt.% of a solvent. The binder (a) is produced by reacting: (A) 20 to 80 wt.% of epoxy resin, (B) 1 to 60 wt.% of p olyester resin with a molecular weight of 500 to 5000 and polymerizing (C) 10 to 50 wt.% of ethylenically unsaturated monomers, 1 0 to 50 wt.% of which contain carboxyl groups, in the presence of the reaction product. The sum of (a), (b), (c), and (d) and t he sum of (A), (B) and (C) are each equal to 100 wt.%. The coating material is characterized in that the epoxy resin has a molecu lar weight of at least 850 and the polyester resin has an acid value of 2 to less than 30 mg KOH/g, and the epoxy resin is reacted with the polyester resin in such a manner that at least 50 % of the oxirane rings originally present are opened.
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