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Title:
AQUEOUS EMULSION AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/1999/061484
Kind Code:
A1
Abstract:
A highly stable, aqueous emulsion of a (co)polymer which comprises as the main component at least one member selected among (meth)acrylic ester monomer units, styrene monomer units, and diene monomer units and has been dispersed and stabilized with a water-soluble polymer containing an alcoholic hydroxyl group and having a molecular weight of 300 or higher, characterized by having an average particle diameter of 0.05 to 5 $g(m)m, an index of chemical stability to calcium chloride of 20 or higher, and a surface tension at 30 wt.% solid concentration of 45 mN/m or higher. The aqueous emulsion is produced by polymerizing one or more monomers in an aqueous medium in the presence of an alcohol and a polymerization initiator generating a free peroxide radical while continuously or intermittently introducing the monomers and the water-soluble polymer into the reaction system.

Inventors:
INOUE TOSHIHIRO (JP)
HANEDA HIDEKAZU (JP)
Application Number:
PCT/JP1999/002844
Publication Date:
December 02, 1999
Filing Date:
May 28, 1999
Export Citation:
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Assignee:
NIPPON ZEON CO (JP)
INOUE TOSHIHIRO (JP)
HANEDA HIDEKAZU (JP)
International Classes:
C08F2/00; C08F2/22; C08F2/24; C08F12/08; C08F20/12; C08F36/02; C08F36/04; C08F220/18; C08F261/04; C08F291/00; C08L9/10; C08F291/08; C08L25/04; C08L33/06; C08L33/08; C08L33/10; C08L47/00; C08L51/00; C09J121/00; C09J133/10; (IPC1-7): C08F2/24; C08F12/08; C08F20/12; C08F36/02; C08F291/08; C08L25/04; C08L33/08; C08L33/10; C08L47/00; C08L51/00
Foreign References:
JPH0641210A1994-02-15
JPH08245706A1996-09-24
JPH08325312A1996-12-10
Other References:
See also references of EP 1090931A4
Attorney, Agent or Firm:
Uchida, Yukio (Shiba 2-chome Minato-ku Tokyo, JP)
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