Patent ID: 9388512
Filing Date: 2016-07-12
CPC Classification: C08G,D01D,D01F,D02J,D10B

Claim Text:
1. A para-type wholly aromatic copolyamide drawn fiber having: a tensile elastic modulus of 630 cN/dtex or more; and a dry creep of 2.0×10-4% or less after the lapse of 10 hours at 80° C.; wherein the para-type wholly aromatic copolyamide drawn fiber is produce from a para-type wholly aromatic copolyamide obtained by reacting(i) an aromatic dicarboxylic acid dichloride component selected from the group consisting of terephthalic acid dichloride, 2-chloroterphthalic acid dichloride, 3-methylterephthalic acid dichloride, 4,4′-biphenyldicarboxylic acid dichloride, and 2,6-naphthalenedicarboxylic acid dichloride with (ii) an aromatic diamine component selected from the group consisting of paraphenylene diamine,3,4′-diaminodiphenyl ether, parabiphenylene diamine,5-amino-2-(4-aminophenylene)benzimidazole, and 1,4-dichloroparaphenylene diamine.