High molecular weight (co)polyamide from diamino-alcohol

Details High molecular weight (co)polyamide from diamino-alcohol High molecular weight (co)polyamide from diamino-alcohol

1990-06-15

1991-11-26

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528315, 528317, 528318, 528335, 528336, 528338, 528480, 528481, C08G 6926

Patent

active

050683110

ABSTRACT:
The invention relates to high molecular weight thermoplastically deformable branched aliphatic polyamides prepared by polycondensation of lactams and/or polyamide-forming diamine/dicarboxylic acid reaction mixtures and/or amino acids in the presence of small amounts of specific diamino-alcohols and approximately equivalent amounts of polycarboxylic acids (preferably dicarboxylic acids), and to a process for their preparation, which is distinguished by considerably shortened polycondensation times, without crosslinked products being formed. If appropriate, the process additionally utilizes a solid phase after-condensation, in which rapid further condensation to products which are indeed branched but are soluble in m-cresol and have an increased melt viscosity takes place.

REFERENCES:
patent: 4341671 (1982-07-01), Bolze et al.

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