Title:
DISPERSION STABILIZER FOR SUSPENSION POLYMERIZATION
Document Type and Number:
WIPO Patent Application WO/2013/115239
Kind Code:
A1
Abstract:
[Problem] The purpose of the present invention is to provide a dispersion stabilizer for suspension polymerization, whereby polymer particles of uniform diameter can be manufactured with minimal formation of coarse particles, and whereby polymer particles can be obtained having reduced blocking and scaling, as well as extremely superior plasticizer absorption properties and monomer removal properties. [Solution] A dispersion stabilizer for suspension polymerization, containing a polyoxyalkylene-modified vinyl alcohol-based polymer (A) having a polyoxyalkylene group with 2 to 100 repeating units and 2-4 carbon atoms in an alkylene group in a side chain, the polyoxyalkylene-modified vinyl alcohol-based polymer (A) having a viscosity average degree of polymerization of less than 500 and a degree of saponification greater than 70 mol%, and the denaturation rate of the polyoxyalkylene group being 0.1 mol% to 10 mol%.
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Inventors:
FUKUHARA TADAHITO (JP)
KUMAKI YOSUKE (JP)
NAKAMAE MASATO (JP)
KUMAKI YOSUKE (JP)
NAKAMAE MASATO (JP)
Application Number:
PCT/JP2013/052025
Publication Date:
August 08, 2013
Filing Date:
January 30, 2013
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
C08F2/20; C08F216/06; C09K23/38; C09K23/42; C09K23/52
Domestic Patent References:
| WO2010113568A1 | 2010-10-07 | |||
| WO2010113569A1 | 2010-10-07 | |||
| WO1986005191A1 | 1986-09-12 |
Foreign References:
| JP2000297107A | 2000-10-24 | |||
| JP2004075870A | 2004-03-11 | |||
| JPS6058402A | 1985-04-04 |
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