Title:
RESIN PARTICLE AND ITS PRODUCTION METHOD
Document Type and Number:
Japanese Patent JP3946587
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide resin particles in each of which parts of different types of resin are unevenly distributed.
SOLUTION: The method for producing the resin particles comprises suspension-polymerizing a solution comprising a polyester resin or a polystyrene resin and a (meth)acrylic monomer containing 0.01-3 wt.% phosphoric ester and 2-30 wt.% crosslinking vinyl monomer in the presence of an aqueous medium to obtain the resin particles in each of which a part comprising the polyester resin or the polystyrene resin is unevenly distributed in a part comprising a crosslinked resin derived from the (meth)acrylic monomer.
Inventors:
Akiyoshi Kusaka
Yuji Noguchi
Yuji Noguchi
Application Number:
JP2002200254A
Publication Date:
July 18, 2007
Filing Date:
July 09, 2002
Export Citation:
Assignee:
Sekisui Plastics Co., Ltd.
International Classes:
C08F283/02; G03G9/087; A61K8/18; A61K8/30; A61K8/72; A61K8/81; A61K8/85; A61Q1/02; C08F2/18; C08F2/44; C08F257/02; (IPC1-7): C08F283/02; A61K7/00; A61K7/02; C08F2/18; C08F2/44; C08F257/02; G03G9/087
Domestic Patent References:
| JP2004027008A | ||||
| JP5034975A | ||||
| JP7165847A | ||||
| JP11140139A | ||||
| JP2001316553A |
Attorney, Agent or Firm:
Shintaro Nogawa