Title:
POLYCARBONATE FIBERS, FIBER STRUCTURE AND RESIN COMPOSITE BODY
Document Type and Number:
WIPO Patent Application WO/2021/060179
Kind Code:
A1
Abstract:
The present invention provides: polycarbonate fibers that have a specific orientation degree and/or a specific birefringence value; a fiber structure; and a resin composite body. The polycarbonate fibers may have an orientation degree ft of less than 0.70, said orientation degree being expressed by the formula below, and may have a birefringence value of 0.04 or less. ft = 1 – (1.0/C)2
In the formula, C represents an actually measured speed of sound (km/sec).
A polycarbonate resin that constitutes the polycarbonate fibers may have a number average molecular weight (Mn) of from 12,000 to 40,000 and/or a weight average molecular weight (Mw) of from 25,000 to 80,000.
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Inventors:
TSUDAKA TAKESHI (JP)
KAMADA HIDEKI (JP)
ENDO RYOKEI (JP)
KAMADA HIDEKI (JP)
ENDO RYOKEI (JP)
Application Number:
PCT/JP2020/035432
Publication Date:
April 01, 2021
Filing Date:
September 18, 2020
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
D01F6/64; C08L69/00; D01F6/94
Domestic Patent References:
| WO2014021084A1 | 2014-02-06 |
Foreign References:
| JP2010248684A | 2010-11-04 | |||
| JPH04146210A | 1992-05-20 | |||
| JP2017014368A | 2017-01-19 | |||
| JP2019104898A | 2019-06-27 | |||
| JPH01146210A | 1989-06-08 | |||
| JPH04146210A | 1992-05-20 |
Other References:
See also references of EP 4036287A4
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
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