Title:
親水化微粒子の製造方法
Document Type and Number:
Japanese Patent JP5629779
Kind Code:
B2
Abstract:
Provided is a method for producing hydrophilized microparticles, wherein the discoloration of vinyl polymer microparticles can be controlled even if the fluorine gas concentration in the mixed gas used for the hydrophilization process is increased. This method for producing hydrophilized microparticles, which produces hydrophilized microparticles by performing a treatment that brings the substrate particles into contact with a mixed gas containing fluorine gas, the gas of an oxygen atom-containing compound, and an inert gas to hydrophilize the surface of the substrate particles, is characterized in that: the substrate particles are vinyl polymer microparticles with a number-based mean particle size of 1000 µm or less; the volume ratio between the fluorine gas and the oxygen atom-containing compound gas in the mixed gas (oxygen atom-containing compound gas/fluorine gas) is less than 6; and the concentration of fluorine gas in the mixed gas is 0.9 volume% or more.
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Inventors:
竹林 仁
初代 善夫
高田 順司
松本 和明
佐々木 令晋
初代 善夫
高田 順司
松本 和明
佐々木 令晋
Application Number:
JP2012537693A
Publication Date:
November 26, 2014
Filing Date:
October 03, 2011
Export Citation:
Assignee:
東洋炭素株式会社
株式会社日本触媒
株式会社日本触媒
International Classes:
C08J3/12
Domestic Patent References:
| JPH08224451A | 1996-09-03 | |||
| JPH04318041A | 1992-11-09 | |||
| JPH04315832A | 1992-11-06 | |||
| JPS60109171A | 1985-06-14 |
Foreign References:
| WO2010032851A1 | 2010-03-25 |
Attorney, Agent or Firm:
Hisakazu Ueki
Hisahiko Ueki
Tadashi Sugawa
Hiroaki Ito
Hisahiko Ueki
Tadashi Sugawa
Hiroaki Ito