Process for the preparation of a polyesterimide resin
Abstract
Abstract A PROCESS FOR THE PREPARATION OF A POLYESTERIMIDE RESIN COMPRISING THE STEPS OF REACTING AT LEAST ONE POLYBASIC CARBOXYLIC ACID OR A REACTIVE DERIVATIVE THEREOF WITH AT LEAST ONE POLYHYDRIC ALCOHOL AND AT LEAST ONE PRIMARY AMINE OR REACTIVE DERIVATIVE THEREOF TO FORM A POLYCONDENSATION PRODUCT CONTAINING, IN ADDITION TO ESTER GROUPS, AT LEAST ONE FIVE-MEMBERED IMIDE RING. THE NUMBER OF PRIMARY AMINO GROUPS EMPLOYED IS IN EXCESS OF THE PRIMARY AMINO GROUPS BOUND IN THE CYCLIC IMIDE GROUP OR GROUPS, AND/OR AT LEAST ONE POLYFUNCTIONAL COMPOUND CONTAINING SECONDARY AMINO GROUPS IS PRESENT IN THE REACTION MIXTURE. THE PROCESS IS CHARACTERIZED IN THAT THE REACTION BETWEEN THE RESIN-FORMING COMPONENTS IS CARRIED OUT IN THE PRESENCE OF AT LEAST 0.3% BY WEIGHT OF AT LEAST ONE CONVENTIONAL ESTERIFICATION CATALYST, CALCUALTED ON THE WEIGHT OF THE RESIN PRODUCED.
Inventors
- 👤 Karl Schmidt
- 👤 Dietrich Wille
Bibliographic Details
Claims Analysis
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