Process for producing aromatic polyamide film

Details Process for producing aromatic polyamide film Process for producing aromatic polyamide film

1995-06-30

1996-12-24

Seidleck, James J.

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

Synthetic resins

From carboxylic acid or derivative thereof

528338, 528339, 528340, 528344, 528348, 528183, 528190, C08G 6908, C08G 7310

Patent

active

055874509

ABSTRACT:
A process for producing an aromatic polyamide film, which comprises the steps of: (a) forming a thin layer of an optically isotropic dope in which an aromatic polyamide is dissolved in a polar amide, (b) immersing the thin layer dope of aromatic polyamide in a polar solvent, other than said polar amide, kept at a temperature not higher than -20.degree. C. to prepare a film, and (c) drying the film. The aromatic polyamide film thus obtained is excellent in transparency. Said process requires neither a step of dissolving an aromatic polyamide in conc. sulfuric acid nor an acid-resistant equipment, and hence, is inexpensive.

REFERENCES:
patent: 5177175 (1993-01-01), Kiriyama et al.

Affiliated with

Also associated with

Rating

Process for producing aromatic polyamide film does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing aromatic polyamide film, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing aromatic polyamide film will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1179307