Process for coagulating and washing lyotropic polybenzazole film

Details Process for coagulating and washing lyotropic polybenzazole film Process for coagulating and washing lyotropic polybenzazole film

1992-05-21

1994-04-12

Thurlow, Jeffrey

Plastic and nonmetallic article shaping or treating: processes

Disparate treatment of article subsequent to working,...

Washing of article

264291, 264344, 2642896, 2642902, B29C 5512

Patent

active

053023340

ABSTRACT:
A process for coagulating a polybenzazole film which includes contacting a lyotropic polybenzazole dope film that is constrained in at least two directions with a coagulant under conditions such that the polybenzazole polymer separates as a gelled moiety with the structure set such that further removal of solvent will result in no more than a 5% increase in the force necessary to constrain the film.

REFERENCES:
patent: 3444585 (1969-05-01), Watanabe
patent: 3725523 (1973-04-01), Bowen
patent: 3742104 (1973-06-01), Jamison et al.
patent: 3767756 (1972-06-01), Blades
patent: 3869429 (1975-03-01), Blades
patent: 3966686 (1976-06-01), Asakura et al.
patent: 4051108 (1977-09-01), Helminiak et al.
patent: 4066731 (1978-01-01), Hungerford
patent: 4342715 (1982-08-01), Shimada et al.
patent: 4374978 (1983-02-01), Fujiwara et al.
patent: 4405550 (1983-09-01), Hungerford
patent: 4419317 (1983-12-01), Fujiwara et al.
patent: 4440710 (1984-04-01), Fujiwara et al.
patent: 4487735 (1984-12-01), Chenevey
patent: 4554119 (1985-11-01), Chenevey
patent: 4606875 (1986-08-01), Chenevey
patent: 4702876 (1987-10-01), Ebregt
patent: 4728473 (1988-03-01), Satoh et al.
patent: 4734196 (1988-03-01), Kono et al.
patent: 4842924 (1989-06-01), Farris et al.
patent: 4845150 (1989-07-01), Kovak et al.
patent: 4857255 (1989-08-01), Imanishi et al.
patent: 4859393 (1989-08-01), Yang et al.
patent: 4871500 (1989-10-01), Harms et al.
patent: 4898924 (1990-02-01), Chenevey
patent: 4900805 (1990-02-01), Arnold et al.
patent: 4927909 (1990-05-01), Wadhwa et al.
patent: 4963428 (1990-10-01), Harvey et al.
patent: 4966806 (1990-10-01), Lusignea et al.
patent: 4971744 (1990-11-01), Park et al.
patent: 4973442 (1990-11-01), Harvey et al.
patent: 4977223 (1990-12-01), Arnold et al.
patent: 5011643 (1991-04-01), Yang et al.
AFWAL-TR-80-4142, Part IV. Processing of Rod Like Polymers Part IV. Author: E. C. Chenevey.
AFWAL-TR-85-4135. Processing of Rod Like Polymers-Tubular Films. By: E. C. Chenevey.
AFWAL-8903, Advanced Dielectric Film for Use in Power Filter Capacitors and High Energy Dinsity Capacitors, By: Joseph Piche et al.
Sen-I Gakkaishi, vol. 47, No. 2, 1991 by Takeda et al.; Coagulation Behavior of Poly(P-Phenylenebenzobisoxazole)/Poly(Phospholic Acid) Solution in Solvent-Water Coagulant.

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