PREPARATION OF POLYAMIDES

专利名称：PREPARATION OF POLYAMIDES申请号：AU5906273申请日：19730809公开号：AU5906273A公开日：19750213

摘要：In the first stage, a diamine or a mixt. of >=2 diamines in a lactam or a mixt. of>=2 lactams, reacted, and the reaction prod. opt with addition further amts. of diamine(s)or lactam(s) or amine(s) and lactam(s) and also opt. with addn of an aminocarboxylic acids,is polycondensed, in the second stage, with a dicarboxylic acid or a mixt. of >=2dicarboxylic acids or their amide-forming derivs. The first stage is effected at temps.between 40 degrees C and the decomposition temp of the unstable reaction

components, pref. 200-350 degrees C, and the second-stage polycondensn is effectedunder the same temp. conditions.

申请人：HOECHST A.G., VORMALS MEISTER LUCIUS & BRUNING, FARBWERKE

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