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1. US20060083923 - Polybenzazole fiber and use thereof

Office United States of America
Application Number 10517832
Application Date 12.08.2005
Publication Number 20060083923
Publication Date 20.04.2006
Grant Number 7357982
Grant Date 15.04.2008
Publication Kind B2
IPC
D02G 3/00
DTEXTILES; PAPER
02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
GCRIMPING OR CURLING FIBRES, FILAMENTS, YARNS, OR THREADS; YARNS OR THREADS
3Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
B63H 9/00
BPERFORMING OPERATIONS; TRANSPORTING
63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
HMARINE PROPULSION OR STEERING
9Marine propulsion provided directly by wind power
B63H 9/06
BPERFORMING OPERATIONS; TRANSPORTING
63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
HMARINE PROPULSION OR STEERING
9Marine propulsion provided directly by wind power
04using sails or like wind-catching surfaces
06Types of sail; Constructional features of sails; Arrangements thereof on vessels
D01F 6/58
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
D01F 6/74
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
E04C 5/07
EFIXED CONSTRUCTIONS
04BUILDING
CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
5Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
07Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
CPC
E04C 5/07
EFIXED CONSTRUCTIONS
04BUILDING
CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
5Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
07Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
B63H 9/0657
B63H 2009/0678
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
D07B 1/025
DTEXTILES; PAPER
07ROPES; CABLES OTHER THAN ELECTRIC
BROPES OR CABLES IN GENERAL
1Constructional features of ropes or cables
02Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
025comprising high modulus, or high tenacity, polymer filaments or fibres, e.g. liquid-crystal polymers
D07B 2205/2096
DTEXTILES; PAPER
07ROPES; CABLES OTHER THAN ELECTRIC
BROPES OR CABLES IN GENERAL
2205Rope or cable materials
20Organic high polymers
2096Poly-p-phenylenebenzo-bisoxazole [PBO]
Applicants Toyo Boseki Kabushiki Kaisha
Inventors Abe Yukihiro
Matsuoka Go
Kiriyama Kohei
Murase Hiroki
Nakamura Muneatsu
Nomura Yukihiro
Eguchi Hironori
Okuyama Yukinari
Kuroki Tadao
Ichiryu Takaharu
Tachimori Hiroshi
Agents Kenyon &; Kenyon LLP
Title
(EN) Polybenzazole fiber and use thereof
Abstract
(EN)

The present invention relates to polybenzazole fibers or filaments, staple fibers, spun yarns, and woven or knitted fabrics containing in themselves an organic pigment having heat resistance as high as a thermal decomposition temperature of 200° C. or higher, and soluble in a mineral acid and having group(s) of —N═ and/or NH— in the molecule, such as any of perinones and/or perylenes, any of phthalocyanines, any of quinacridones, and any of dioxazines, wherein they have a strength retention of 50% or higher when exposed to light from a xenon lamp for 100 hours and having a tensile strength retention of 85% or higher after exposed to an atmosphere of a temperature of 80° C. and a relative humidity of 80% for 700 hours.

The polybenzazole fibers or filaments, staple fibers, spun yarns, and woven or knitted fabrics can be used for cords for reinforcing rubber, sheets and rods for reinforcing cement/concrete, composite materials, sail clothes, ropes, knife proof vests and bullet proof vests.