Aromatic copolyamide containing 3,4'-diphenylene moiety

Details Aromatic copolyamide containing 3,4'-diphenylene moiety Aromatic copolyamide containing 3,4'-diphenylene moiety

1982-03-30

1983-11-01

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528176, 528179, 528180, 528182, 528184, 528208, 528229, 528321, 528331, 528337, 528340, 528344, 528348, C08G 6932

Patent

active

044131143

ABSTRACT:
An aromatic copolyamide comprising recurring units (A) of the formula (I), (B) of the formula (II) and (C) of the formula (III): ##STR1## wherein in (I), (II) and (III), Ar.sub.1 is phenylene, naphthylene or biphenylene radicals, each having two valence bonds oriented meta; Ar.sub.2 is phenylene, naphthylene or biphenylene radicals, each having two valence bonds oriented coaxially or in parallel to each other and radicals of the formula (IV): ##STR2## wherein Y.sub.1 and Y.sub.2 are independently ##STR3## and; X.sub.1, X.sub.2, X.sub.3, X.sub.4, X.sub.5 and X.sub.6 respectively are independently --NH-- and --CO-- radicals, connected to each other to form an amide bond (--NHCO-- or --CHNH--), and the molar proportions of said recurring units (A), (B), and (C) fall within a quadrilateral defined by the co-ordinates P, Q, R and S or on a twice-turned line defined by the co-ordinates Q, R, S and P:

REFERENCES:
patent: 4075172 (1978-02-01), Ozawa et al.

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