Title:
METHOD FOR PRODUCING HOLLOW PARTICLES, METHOD FOR PRODUCING PORE-MAKING MATERIAL, METHOD FOR PRODUCING PARTICLES FOR COSMETICS, AND METHOD FOR PRODUCING WEIGHT-REDUCING MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/181988
Kind Code:
A1
Abstract:
One embodiment of this invention provides a method for producing hollow particles, comprising: a step in which a dispersion is prepared by dispersing, in a water phase, an oil phase containing at least a polyfunctional isocyanate compound and a compound having a boiling point of at least 150°C; a step in which, by heat-treating the dispersion, at least the polyfunctional isocyanate compound is made to undergo a polymerization reaction to form a wall, to obtain particles encapsulating the compound having a boiling point of at least 150°C; and a step in which the compound having a boiling point of at least 150°C is removed from the particles by heat treatment, thereby forming hollowing particles having a single space therein. Also provided is a method for producing a pore-making material, a method for producing particles for cosmetics and a method for producing a weight-reducing material.
Inventors:
HATTA MASAHIRO (JP)
Application Number:
PCT/JP2019/011600
Publication Date:
September 26, 2019
Filing Date:
March 19, 2019
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
B01J13/18; A61K8/02; A61K8/87; A61Q1/00; C08G18/00; C08J9/32
Foreign References:
| JPH0889789A | 1996-04-09 | |||
| JP2006199904A | 2006-08-03 | |||
| JP2007126533A | 2007-05-24 | |||
| JP2015510443A | 2015-04-09 | |||
| JP2013537472A | 2013-10-03 |
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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