Title:
LIQUID CRYSTAL POLYESTER FIBERS AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2023/058563
Kind Code:
A1
Abstract:
Provided are liquid crystal polyester fibers that generate less gas when heated and that have excellent hue. The liquid crystal polyester fibers have a total carboxy end group amount (total CEG amount) of not more than 5.0 meq/kg and have a ketone bond amount of not more than 0.05 mol%. For example the liquid crystal polyester fibers may have a melting point of not more than 380°C. The liquid crystal polyester fibers may have a strength of less than 18 cN/dtex. Further, the liquid crystal polyester fibers may contain a liquid crystal polyester which has not less than 50 mol% of a structural unit derived from 4-hydroxybenzoic acid.
Inventors:
TERAMOTO YUKIHIRO (JP)
TSUJIMOTO TAKUYA (JP)
KAMADA HIDEKI (JP)
TSUJIMOTO TAKUYA (JP)
KAMADA HIDEKI (JP)
Application Number:
PCT/JP2022/036593
Publication Date:
April 13, 2023
Filing Date:
September 29, 2022
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
D01F6/84
Domestic Patent References:
| WO2013099863A1 | 2013-07-04 | |||
| WO2022113802A1 | 2022-06-02 |
Foreign References:
| JPH0585642B2 | 1993-12-08 | |||
| JPH01280031A | 1989-11-10 | |||
| JP2013237945A | 2013-11-28 | |||
| JPH0473227A | 1992-03-09 | |||
| JPH01280031A | 1989-11-10 |
Other References:
POLYMER DEGRADATION AND STABILITY, vol. 76, 2002, pages 85 - 94
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
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