DISPERSION STABILIZER FOR SUSPENSION POLYMERIZATION AND METHOD FOR PRODUCING VINYL RESIN USING SAME

WIPO Patent Application WO/2014/069616

A1

A dispersion stabilizer for suspension polymerization of vinyl compounds, which is composed of an aqueous emulsion. The aqueous emulsion contains a solid content that contains (A) a polyvinyl alcohol, (B) a polyvinyl ester and (C) a graft polymer that is obtained by graft polymerizing a vinyl ester monomer to a polyvinyl alcohol. The amount of the polyvinyl alcohol (A) relative to the total amount of the components (A), (B) and (C) is 0.1-18% by mass, and the amount of the graft polymer (C) relative to the total amount of the components (A), (B) and (C) is 7-80% by mass. The weight average molecular weight of the solid content as determined by gel permeation chromatography is 1,100,000 or less. This dispersion stabilizer for suspension polymerization has excellent polymerization stability and excellent handleability. In addition, a vinyl resin which is obtained using this dispersion stabilizer for suspension polymerization has good plasticizer absorbency.

FUKUHARA TADAHITO (JP)
KUMAKI YOUSUKE (JP)

PCT/JP2013/079675

May 08, 2014

November 01, 2013

Click for automatic bibliography generation  

KURARAY CO (JP)

C08F261/04; C08F2/20; C08L29/04; C08L31/02; C08L51/00

WO2008129936A1

2008-10-30

JP2005082665A	2005-03-31
JP2004189891A	2004-07-08
JP2005334767A	2005-12-08
JPH08283313A	1996-10-29
JP2007091886A	2007-04-12
JPH0827219A	1996-01-30
JPH09100301A	1997-04-15
JPH10147604A	1998-06-02
JP2007063369A	2007-03-15
JPH10168128A	1998-06-23
JPH09132608A	1997-05-20
JPH1081865A	1998-03-31
JP2005082665A	2005-03-31

AKIO NAKAJIMA, KOBUNSHI KAGAKU, vol. 6, 1949
See also references of EP 2915827A4

NAKATSUKASA, Shigeki et al. (JP)
Shigeki Nakamu (JP)

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