Title:
FINE CELLULOSE FIBERS AND PRODUCTION METHOD THEREFOR, NONWOVEN FABRIC, AND FIBER-REINFORCED RESIN AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/008497
Kind Code:
A1
Abstract:
Provided are fine cellulose fibers that can be used to obtain a fiber-reinforced resin that is excellent in all of strength, elastic modulus, and fracture strain. An embodiment of the present invention provides fine cellulose fibers that satisfy, in measurement using an automatic fiber shape analyzer, all of (i) the length weighted average fiber length of fibers having a fiber length of at least 100 μm is 110-500 μm, (ii) the average fiber diameter is at most 42.5 μm, (iii) the fine fiber area ratio is at most 90%, (iv) the number frequency of fibers having a fiber length of 20-56 μm is at most 97% among fibers having a fiber length of less than 100 μm, (v) the number frequency of fibers having a fiber length of at least 411 μm is at most 54% among fibers having a fiber length of at least 100 μm, and (vi) the average fiber diameter is 20-150 nm in terms of specific surface area.
Inventors:
UCHIMURA HIROFUMI (JP)
ONO HIROFUMI (JP)
ASAI HIROTAKA (JP)
FUJIMOTO YOKO (JP)
YAMASAKI NAOAKI (JP)
KAWAHARA KAZUFUMI (JP)
ONO HIROFUMI (JP)
ASAI HIROTAKA (JP)
FUJIMOTO YOKO (JP)
YAMASAKI NAOAKI (JP)
KAWAHARA KAZUFUMI (JP)
Application Number:
PCT/JP2022/029012
Publication Date:
February 02, 2023
Filing Date:
July 27, 2022
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
D21H15/02; B29C70/12; B29C70/42; C08B3/20; C08J5/06; D01F2/28; D04H1/425; D21H11/18; D21H11/20
Domestic Patent References:
| WO2018116661A1 | 2018-06-28 | |||
| WO2021112195A1 | 2021-06-10 | |||
| WO2016148233A1 | 2016-09-22 | |||
| WO2019230573A1 | 2019-12-05 |
Foreign References:
| US20180010299A1 | 2018-01-11 | |||
| JPH06257097A | 1994-09-13 | |||
| JPH07232060A | 1995-09-05 | |||
| JP2010031093A | 2010-02-12 |
Other References:
SLUITER, A.HAMES, B.RUIZ, R.SCARLATA, C.SLUITER, J.TEMPLETON, D.CROCKER, D.: "Determination of structural carbohydrates and lignin in biomass", NATIONAL RENEWABLE ENERGY LABORATORY (NREL), USA, 2008
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
Download PDF: