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Title:
CELLULOSE ACETATE-CONTAINING PARTICLES, COSMETIC COMPOSITION, AND METHOD FOR PRODUCING CELLULOSE ACETATE-CONTAINING PARTICLES
Document Type and Number:
WIPO Patent Application WO/2020/188698
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide microparticles that exhibit excellent biodegradability, tactile properties, and lipophilicity. Provided are cellulose acetate-containing particles having an average particle size of 80 nm to 100 μm, a sphericity of 0.7 to 1.0, a surface smoothness of 80% to 100%, and a surface contact angle versus water of at least 100°. The cellulose acetate has a total degree of acetyl substitution of 0.7 to 2.9.

Inventors:
KOBAYASHI KEIKO (JP)
OMURA MASAYA (JP)
Application Number:
PCT/JP2019/011161
Publication Date:
September 24, 2020
Filing Date:
March 18, 2019
Export Citation:
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Assignee:
DAICEL CORP (JP)
International Classes:
C08J3/12; A61K8/73; C08B3/06; C08L1/12
Domestic Patent References:
WO2014102862A12014-07-03
WO2016135778A12016-09-01
WO1992004408A11992-03-19
Foreign References:
JP2004269865A2004-09-30
JPH11222411A1999-08-17
JPS59219333A1984-12-10
JPS61211342A1986-09-19
US5258436A1993-11-02
JP2007224259A2007-09-06
JP2016500129A2016-01-07
JP6187653B12017-08-30
JP2004051942A2004-02-19
JPH11222411A1999-08-17
JP2003146829A2003-05-21
JPH066307B21994-01-26
Other References:
MUTSUHITO WATANABETOSHIHIRO ITOMASAAKI IIDAATSUYOSHI OKABEYOSHINARI KAWAGUCHIKIKUO SHINBORYOJI SONOTATEO MURUITOSHIYUKI KANEKOYUKA, JOURNAL OF JAPAN OIL CHEMISTS' SOCIETY, vol. 35, 1986, pages 1018
See also references of EP 3943530A4
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
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