Branched (co)polyamide by polycondensation in the presence of ly

Details Branched (co)polyamide by polycondensation in the presence of ly Branched (co)polyamide by polycondensation in the presence of ly

1989-09-05

1991-07-02

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528312, 528323, 528324, 5283291, 528336, 528480, 528481, 528503, C08G 6910

Patent

active

050286897

ABSTRACT:
This invention relates to thermoplastically mouldable slightly branched aliphatic (co)polyamides of high molecular weight with increased melt viscosities and a marked structural viscosity prepared by accelerated polycondensation of suitable monomer melts in the presence of small quantities of lysine components and approximately equivalent quantities of a polycarboxylic acid optionally followed by a thermal after-condensation reaction, and to a process for the polycondensation. The lysine components used are lysine, lysine hydrate, esters of lysine with low alcohols or lysine hydrochlorides (the latter in the presence of approximately equivalent quantities of bases added at the same time to bind the HCl).

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