Process for the preparation of copolyamide from adipic acid, ter

Details Process for the preparation of copolyamide from adipic acid, ter Process for the preparation of copolyamide from adipic acid, ter

1986-08-18

1988-08-09

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528335, 528336, 528347, C08G 6928

Patent

active

047629100

ABSTRACT:
Process for the preparation of copolyamides from adipic acid, terephthalic acid and hexamethylene diamine containing 25-48% by weight of units of hexamethylene terephthalamide, by precondensing the monomers at a temperature of at least 250.degree. C. and a pressure of at least 35 bar and completing the polycondensation in the usual manner.

REFERENCES:
patent: 3383369 (1968-05-01), Ridgway
patent: 3388099 (1968-06-01), Ridgway
patent: 3402152 (1968-09-01), Brignac et al.
patent: 3475387 (1969-10-01), Carter et al.
patent: 3501441 (1970-03-01), Brignac et al.
patent: 3654236 (1972-04-01), Ridgway
patent: 4218509 (1980-08-01), Edgar et al.
patent: 4603166 (1986-07-01), Poppe et al.

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