Aromatic copolyamide

Details Aromatic copolyamide Aromatic copolyamide

1991-03-05

1992-06-23

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528125, 528128, 528183, 528184, 528185, 528321, C08G 6902, C08G 6912, C08G 6932

Patent

active

051244365

ABSTRACT:
Aromatic copolyamides, preparation thereof and structures formed therefrom
There are described aromatic copolyamides which are soluble in organic solvents for polyamides and which comprise at least 95 mol % of recurring structural units of formulae ##STR1## and up to 5 mol % of meta-bonded structural units E and/or F derived from aromatic dicarboxylic acids (E') and/or from aromatic diamines (F'), the sum total of the mole fractions of structural units A+E and the sum total of the mole fractions of structural units B+C+D+F being essentially of equal magnitude.
The copolyamides of the present invention can be processed into fibers having high strengths and high breaking extensions.

REFERENCES:
patent: 4511709 (1985-04-01), Yoon et al.
patent: 4987215 (1991-01-01), Keil et al.
patent: 4987216 (1991-01-01), Keil et al.

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