Title:
AMPHIPHILIC ALGINIC ACID PARTICLE GROUP AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2021/251034
Kind Code:
A1
Abstract:
The present invention provides amphiphilic polymer particles which are formed from a naturally derived starting material and exhibit hydrophobicity, while maintaining an adequate water absorption. An amphiphilic alginic acid particle group which is obtained by subjecting a polyvalent metal alginate to a hydrophobization treatment with use of a hydrophobizing agent, wherein: some metal ions in the polyvalent metal alginate are hydrophobized through a chemical bond with the hydrophobizing agent; the contact angle at 30 seconds after dropping a water droplet on the particle group is from 30° to 150°; and the water absorption per 100 g of the particles is not less than the oil absorption per 100 g of the particles.
More Like This:
Inventors:
HASHIBA TOSHIFUMI (JP)
HAYAKAWA KAZUTOSHI (JP)
MATSUZAKA ERINA (JP)
HAYAKAWA KAZUTOSHI (JP)
MATSUZAKA ERINA (JP)
Application Number:
PCT/JP2021/017444
Publication Date:
December 16, 2021
Filing Date:
May 07, 2021
Export Citation:
Assignee:
NISSHINBO HOLDINGS INC (JP)
International Classes:
C08L5/04; A61K8/73; A61Q1/02; A61Q19/10; C08J3/12; C08K3/30; C08K5/09; C09K3/18
Domestic Patent References:
| WO2020162303A1 | 2020-08-13 |
Foreign References:
| JP2013173863A | 2013-09-05 | |||
| JP2002012669A | 2002-01-15 | |||
| JPH09192471A | 1997-07-29 | |||
| JPS6274933A | 1987-04-06 | |||
| JP2004300426A | 2004-10-28 | |||
| JPH05222208A | 1993-08-31 |
Other References:
SATO, T. ET AL.: "Development of calcium alginate fine particles and expansion of their use into cosmetics", SEN'I TO KOGYO, vol. 20, no. 1, 1996, pages 20 - 26
Attorney, Agent or Firm:
PATENT PROFESSIONAL CORPORATION EI-MEI PATENT OFFICE (JP)
Download PDF: