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PROCESS FOR PREPARING COPOLYAMIDES BASED ON D: HEXAMETHYLENEDIAMINE D: ADIPIC ACID POSSIBLY D: AT LEAST ONE OTHER SHORT CHAIN CARBOXYLIC DIACIDE AND D: DIMERE ACID
PROCESS FOR PREPARING COPOLYAMIDES BASED ON D: HEXAMETHYLENEDIAMINE D: ADIPIC ACID POSSIBLY D: AT LEAST ONE OTHER SHORT CHAIN CARBOXYLIC DIACIDE AND D: DIMERE ACID
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机译:基于D的共聚酰胺的制备方法:己二乙二胺D:可能的酸D:至少还有一种短链羧酸二胺和D:二聚酸
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摘要
Homogeneous copolyamides having high melting points and good flexibility, well adapted for the production of textile materials and plastic shaped articles, are prepared by prepolymerizing lower dicarboxylic acid(s) with an excess of hexamethylenediamine in the presence of a catalytically effective amount of a strong inorganic or organic oxyacid, or alkali or alkaline earth metal salt thereof, and thence polycondensing the resulting prepolymer with a fatty acid dimer.
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