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1. WO1996005340 - PROCESS OF MAKING POLYBENZAZOLE STAPLE FIBERS

Publication Number WO/1996/005340
Publication Date 22.02.1996
International Application No. PCT/US1995/009885
International Filing Date 04.08.1995
Chapter 2 Demand Filed 23.02.1996
IPC
D01D 5/26 2006.01
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
5Formation of filaments, threads, or the like
26Formation of staple fibres
D01F 6/74 2006.01
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
FCHEMICAL FEATURES IN THE MANUFACTURE OF MAN-MADE FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
6Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof
58from homopolycondensation products
74from polycondensates of cyclic compounds, e.g. polyimides, polybenzimidazoles
CPC
D01D 5/26
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
5Formation of filaments, threads, or the like
26Formation of staple fibres
D01F 6/74
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
6Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
58from homopolycondensation products
74from polycondensates of cyclic compounds, e.g. polyimides, polybenzimidazoles
Applicants
  • THE DOW CHEMICAL COMPANY [US/US]; 2030 Dow Center Abbott Road Midland, MI 48640, US
Inventors
  • CHAU, Chieh-Chun; US
  • WESSLING, Ritchie, A.; US
  • TANI, Katsuya; JP
  • NAKAGAWA, Masaru; JP
  • ICHIRYU, Takaharu; JP
Agents
  • GALBRAITH, Ann, K.; The Dow Chemical Company Patent Dept. P.O. Box 1967 Midland, MI 48641-1967, US
Priority Data
08/365,61428.12.1994US
6/19063512.08.1994JP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROCESS OF MAKING POLYBENZAZOLE STAPLE FIBERS
(FR) PROCEDE DE FABRICATION DE FIBRILLES DE POLYBENZAZOLE
Abstract
(EN)
A continuous process for preparing polybenzazole staple fibers which comprises supplying polybenzazole polymer through an extruder (1) to a spinning head (2) for spinning, passing the filaments through a quench chamber (3), around rollers (4) and through a cutting device (5) which cuts the filaments into staple fibers.
(FR)
Procédé en continu de fabrication de fibrilles courtes de polybenzazole consistant à faire passer un polymère de polybenzazole dans une extrudeuse (1) puis par une filière (2), puis à faire passer les filaments ainsi constitués dans une chambre de refroidissement (3), puis autour de rouleaux (5), puis dans une découpeuse qui les découpe en fibrilles.
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