Title:
COSMETIC INGREDIENT USING CORE-CORONA POLYMER PARTICLES AND OIL-IN-WATER EMULSION COSMETIC
Document Type and Number:
WIPO Patent Application WO/2019/182124
Kind Code:
A1
Abstract:
Provided are core-corona polymer particles superior in terms of emulsion stability and the sensation upon the use thereof, a cosmetic ingredient using said particles, and an oil-in-water emulsion cosmetic. The core-corona polymer particles are obtained by radical polymerization, under (A) to (D) conditions, of a polyethylene oxide macromonomer represented by general formula (1) and of one or more hydrophobic monomers represented by general formulas (2) and (3).
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Inventors:
SUGIYAMA YUKI (JP)
FUKUHARA RYUSHI (JP)
FUKUHARA RYUSHI (JP)
Application Number:
PCT/JP2019/012143
Publication Date:
September 26, 2019
Filing Date:
March 22, 2019
Export Citation:
Assignee:
SHISEIDO CO LTD (JP)
International Classes:
C08F290/06; A61K8/04; A61K8/81; A61Q19/00
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Other References:
KHOR, S. Y. ET AL.: "Polymerization- induced self-assembly: The effect of end group and initiator concentration on morphology of nanoparticles prepared via RAFT aqueous emulsion polymerization", ACS MACRO LETTERS, vol. 6, 31 August 2017 (2017-08-31), pages 1013 - 1019, XP055636569, DOI: 10.1021/acsmacrolett.7b00583
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See also references of EP 3770195A4
WAKUI, TADAHIRO ET AL.: "Polymethacrylate-supported linear polyethers as solid-liquid phase transfer catalysts", MAKROMOLEKULARE CHEMIE, vol. 187, 1986, pages 533 - 545, XP055636570
See also references of EP 3770195A4
Attorney, Agent or Firm:
IWAHASHI Yuji (JP)
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