Transparent copolyamide from 1,10-disubstituted C.sub.11 diamine

Details Transparent copolyamide from 1,10-disubstituted C.sub.11 diamine Transparent copolyamide from 1,10-disubstituted C.sub.11 diamine

1979-10-09

1981-03-24

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528339, 528340, 528346, 528347, 528349, C08G 6926

Patent

active

042581761

ABSTRACT:
There are described transparent copolyamides which are obtained by reaction of a mixture (A) consisting of essentially stoichiometric amounts of a diamine ##STR1## and isophthalic acid or terephthalic acid, or a mixture of isophthalic acid and terephthalic acid, with a mixture (B) consisting of essentially stoichiometric amounts of a diamine ##STR2## and terephthalic acid or a mixture of terephthalic acid and isophthalic acid, or with a mixture (C) consisting of essentially stoichiometric amounts of a diamine ##STR3## and terephthalic acid or isophthalic acid or mixtures thereof, wherein R', R" and R.sub.1 to R.sub.11 have the meanings given in claim 1.
The novel copolyamides are distinguished by good thermoplastic processing characteristics, by low water absorption and by good stability to hydrolysis, and are suitable for producing transparent moulded articles.

REFERENCES:
patent: 3563959 (1971-02-01), Schade et al.

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