Optically anisotropic spinning solution comprising a mixture of

Details Optically anisotropic spinning solution comprising a mixture of Optically anisotropic spinning solution comprising a mixture of

1997-04-22

1999-10-05

Hampton-Hightower, P.

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

Synthetic resins

From carboxylic acid or derivative thereof

528322, 528332, 528335, 528338, 528339, 528348, 428395, 428396, 4284111, 4284745, C08G 6932, C08L 7710, D01F 690

Patent

active

059626275

ABSTRACT:
It has been found that fibers which incorporate very good mechanical properties as well as very good adhesive properties can be made from an optically anisotropic spinning solution containing a mixture of a paraphenylene groups-containing, wholly aromatic polyamide component and another polyamide component if for the para-aromatic polyamide component full or partial use is made of copolymer in which 2,6-naphthylene units are present in addition to the paraphenylene units and the other polyamide component is an aliphatic polyamide. Preferably, the weight ratio of the para-aromatic polyamide component to the aliphatic polyamide component is 95:5 to 85:15. The aromatic copolyamide containing paraphenylene and 2,6-naphthylene is preferably obtained by polymerising paraphenylene diamine (PPD) and a stoichiometric amount of a mixture composed of terephthalic acid dichloride (TDC) and 2,6-naphthylene carboxylic acid dichloride (NDC) in a molar ratio TDC:NDC of 99:1 to 80:20.

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