Title:
ポリベンザゾール繊維の製造方法
Document Type and Number:
Japanese Patent JP3593766
Kind Code:
B2
Abstract:
Described is a method for preparing a polybenzazole filament which comprises extruding a polybenzazole dope filament, drawing the filament across an air gap, coagulating and washing the filament, and drying the filament, characterized in that a solution of a compound selected from the group consisting of ferrocenes, ruthocene, iodide-, cobalt-, and copper-containing compounds, dyes, and mixtures thereof is contacted with a filament subsequent to the washing step and prior to the drying step. This method provides a means to improve the tensile strength retention of damaged polybenzazole filaments following exposure to sunlight.
Inventors:
Katsuhiko Kato
In Hoso
Steven Juy Martin
Chi Chun Chau
Ritchie a. wessling
Ashishen
In Hoso
Steven Juy Martin
Chi Chun Chau
Ritchie a. wessling
Ashishen
Application Number:
JP31483095A
Publication Date:
November 24, 2004
Filing Date:
November 07, 1995
Export Citation:
Assignee:
TOYO BOSEKI KABUSHIKI KAISHA
International Classes:
D06P3/00; D01F6/74; D01F6/94; D01F11/08; D06M13/02; D06M13/50; (IPC1-7): D06M13/50; D01F6/74; D01F6/94; D01F11/08; D06P3/00
Domestic Patent References:
| JP6173113A | ||||
| JP4073219A | ||||
| JP8503504A |
Attorney, Agent or Firm:
Ryoji Yoshida