Method for spinning a polybenzazole fiber

Details Method for spinning a polybenzazole fiber Method for spinning a polybenzazole fiber

1992-12-03

1994-03-22

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

2642108, 26421112, 264232, 264233, 264234, D01D 504, D01D 1002, D01D 1006, D01F 626

Patent

active

052961850

ABSTRACT:
Polybenzazole polymer dopes are spun into fibers at high speed by passing through a spinneret with proper selection of hole geometry, followed by spin-drawing to a spin-draw ratio of at least 20, washing, taking up and drying. The take up speed is at least about 150 meters per minute, and the fibers are spun in at least 10 km lengths without a break.

REFERENCES:
patent: 3584104 (1971-06-01), Bohrer et al.
patent: 3608041 (1971-09-01), Santangelo
patent: 4035465 (1977-07-01), Brydon
patent: 4320081 (1982-03-01), Lammers
patent: 4332759 (1982-06-01), Ide
patent: 4374977 (1983-02-01), Fujiwara et al.
patent: 4374978 (1983-02-01), Fujiwara et al.
patent: 4419317 (1983-12-01), Fujiwara et al.
patent: 4440710 (1984-04-01), Fujiwara et al.
patent: 4466935 (1984-08-01), Bair et al.
patent: 4702876 (1987-10-01), Ebregt et al.
patent: 5174940 (1992-12-01), Kumar et al.
Abstract of Japan 2-84,509, published Mar. 26, 1990.
Abstract of Japan 2-84,510, published Mar. 26, 1990.
Abstract of Japan 2-84,511, published Mar. 26, 1990.
Abstract of Japan 3-104,920, published May 1, 1991.
Abstract of Japan 3-104,921, published May 1, 1991.
Abstract of Japan 4-194,022, published Jul 14, 1992.
U.S. patent application Ser. No. 07/984,828, filed Dec. 3, 1992.
U.S. patent application Ser. No. 07/985,060, filed Dec. 3, 1992.
U.S. patent application Ser. No. 07/985,067, filed Dec. 3, 1992.
U.S. patent application Ser. No. 07/985,068, filed Dec. 3, 1992.
U.S. patent application Ser. No. 07/985,078, filed Dec. 3, 1992.
U.S. patent application Ser. No. 07/985,080, filed Dec. 3, 1992.
MRS, vol. 134, The Materials Science and Engineering of Rigid-Rod Polymers; "An Integrated Laboratory Process for Preparing Rigid Rod Fibers From the Monomers" Harvey D. Ledbetter et al. pp. 253-264.
Encyclopedia of Polymer Science and Engineering, Second Edition, vol. 11, "Polybenzothiazoles and Polybenzoxazoles", by James F. Wolfe, pp. 601-635 (Undated).
MRS Bulletin, Nov. 16/Dec. 31, 1987 "High Performance Polymer Fibers" W. Wade et al. pp. 22-26.
Macromolecules, 1981, vol. 14, "Synthesis, Spinning & Fiber Mechanical Properties of Poly (p-phenylenebenzobisoxazole)" by E. Won Choe and Sang Nim Kim; pp. 920-924.

Affiliated with

Also associated with

Rating

Method for spinning a polybenzazole fiber does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for spinning a polybenzazole fiber, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for spinning a polybenzazole fiber will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-434794