Title:
IRREGULARLY SHAPED PARTICLES AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2010/113812
Kind Code:
A1
Abstract:
Disclosed is a method for producing irregularly shaped particles which is a method for obtaining irregularly shaped particles by allowing seed particles to absorb a polymerizable vinyl monomer in an aqueous emulsion and polymerizing the absorbed polymerizable vinyl monomer, wherein the seed particles are resin particles derived from a (meth)acrylate ester containing at least an alkyl group having 3 or more but less than 6 carbon atoms in the ester moiety and having a weight average molecular weight (measured by GPC (gel permeation chromatography)) of 150,000 to 1,000,000, and the polymerizable vinyl monomer contains a crosslinkable monomer in an amount of 5 to 50% by weight of the total amount of the polymerizable vinyl monomer.
Inventors:
HARADA, Ryosuke (1259 Minakuchicho Izumi, Koka-sh, Shiga 56, 〒5280056, JP)
Application Number:
JP2010/055428
Publication Date:
October 07, 2010
Filing Date:
March 26, 2010
Export Citation:
Assignee:
SEKISUI PLASTICS CO.,LTD. (4-4 Nishitenma 2-chome, Kita-ku Osaka-sh, Osaka 47, 〒5300047, JP)
積水化成品工業株式会社 (〒47 大阪府大阪市北区西天満二丁目４番４号 Osaka, 〒5300047, JP)
積水化成品工業株式会社 (〒47 大阪府大阪市北区西天満二丁目４番４号 Osaka, 〒5300047, JP)
International Classes:
C08F2/00; C08F2/22; C08F265/06
Attorney, Agent or Firm:
NOGAWA, Shintaro (Nogawa Patent Office, Nishitenma Five Bldg. 16-3, Nishitenma 5-chome, Kita-ku, Osaka-sh, Osaka 47, 〒5300047, JP)