Shaped structure of aromatic copolyamide from aromatic diamine mixture

US4847354A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Gunter Keil
• Franz Jakob · Unterhaching, DE
• Klaus Warning · Eppstein, DE
• Friedrich Herold · Hofheim, DE

Key dates

• Filing date: Mar 20, 1986
• Grant date: Jul 11, 1989
• Expiry date: Mar 20, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G69/32
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to filaments, fibers, pulps, films and sheets from a copolyamide which has at least the recurring structural units of the formulae EQU A --OC--AR--CO-- EQU B --NH--Ar'--NH-- ##STR1## and in which the diamine components B, C and D relative to the total amount of diamine components in mol-% are within a predetermined domain. Such copolyamides can be produced from the corresponding diamines and dicarbonyl dichlorides in aprotic solvents in the presence or absence of metal halides of the first or second group of the periodic table. The spinning solutions obtainable therein can be processed in conventional manner into the claimed shaped structures.