| 摘要 |
An improved process for the production of lacquer binders from 1,2-polyepoxides having more than one 1,2-epoxide group per molecule, comprising the steps of: (a) reacting the 1,2-polyepoxide with from 0.01 to 0.6 NH-equivalents, based on one epoxide equivalent, of an optionally substituted active amine hydrogen containing ammonium carbonic acid salt; (b) reacting the thus obtained compound with from 0.40 to 0.90 carboxyl equivalent, based on on epoxide equivalent of acrylic acid, methacrylic acid or a mixture thereof; and optionally (c) reacting the compound obtained from step (b) with from 0.40 to 0.2 carboxyl equivalents, based on one epoxide group, or a saturated aliphatic monocarboxylic acid; so that at least 80% of the epoxide groups originally present are reacted.
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