Patent · US Expired

Aromatic copolyamide

US5124436A · kind A · utility

7Cited by

3References

8Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Gunter Keil
Karl Heinrich · Großaitingen, DE
Peter Klein · Burns Lake, CA

Key dates

Filing date	Mar 5, 1991
Grant date	Jun 23, 1992
Priority date	—
Expiry date	Mar 5, 2011

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G69/36
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.