Process for the preparation of a linear polyamide having ether b

Details Process for the preparation of a linear polyamide having ether b Process for the preparation of a linear polyamide having ether b

1990-03-29

1991-09-24

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

526 64, 526 65, 526 68, 528310, 528324, 528336, C08G 6928

Patent

active

050514911

ABSTRACT:
A process for the continuous preparation of a linear polyamide having ether bridges in the polymer chain, in which an aqueous solution of a salt of a diamine and an equimolar amount of a dicarboxylic acid, which may additionally contain a lactam or the corresponding aminocarboxylic acid, from 1 to 80% of the polyamide-forming units, based on the total polyamide-forming units, being diamine and/or dicarboxylic acid units which, after removal of the amine groups or carboxyl groups, have radicals of formula I

REFERENCES:
patent: 4537949 (1985-08-01), Schmidt et al.
patent: 4540772 (1985-09-01), Pipper et al.
patent: 4713437 (1987-12-01), Pilz et al.

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