Title:
DISPERSION ASSIS5TANT FOR SUSPENSION POLYMERIZATION, METHOD FOR PRODUCING VINYL POLYMER IN WHICH SAID ASSISTANT IS USED, AND VINYL CHLORIDE RESIN
Document Type and Number:
WIPO Patent Application WO/2017/094698
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a dispersion assistant with which it is possible to stably obtain an excellent polymeric substance (vinyl resin) with minimal adhering of scale to a polymerization vessel even when the dispersion assistant is used in a large amount in the suspension polymerization of a vinyl compound. The additive for suspension polymerization contains a polyvinyl alcohol polymer (A) that has a gelling degree of 60 mol% or less and has acetal groups (a) having olefinically unsaturated double bonds.
Inventors:
KOZUKA YOSHIAKI (JP)
OMORI TAKEHIRO (JP)
OMORI TAKEHIRO (JP)
Application Number:
PCT/JP2016/085281
Publication Date:
June 08, 2017
Filing Date:
November 29, 2016
Export Citation:
Assignee:
JAPAN VAM & POVAL CO LTD (JP)
International Classes:
C08F2/20; C08F8/28; C08F16/38; C08F290/12; C08L29/14
Domestic Patent References:
| WO2015182567A1 | 2015-12-03 | |||
| WO2015005153A1 | 2015-01-15 |
Foreign References:
| JP2009108305A | 2009-05-21 | |||
| JP2005281550A | 2005-10-13 | |||
| JPH07319160A | 1995-12-08 | |||
| JPH06279539A | 1994-10-04 | |||
| JPS62161812A | 1987-07-17 | |||
| JPS61230138A | 1986-10-14 | |||
| JPS60247637A | 1985-12-07 | |||
| JPS5476637A | 1979-06-19 | |||
| JP2002003510A | 2002-01-09 | |||
| JP2003327607A | 2003-11-19 | |||
| JP2003238606A | 2003-08-27 | |||
| JP2005281680A | 2005-10-13 | |||
| JPH0485303A | 1992-03-18 | |||
| JP2004115821A | 2004-04-15 | |||
| JPH0493301A | 1992-03-26 |
Other References:
"Poval", 1981, KOBUNSHI KANKOKAI, pages: 246 - 249
MACROMOLECULES, vol. 10, 1977, pages 532
See also references of EP 3385287A4
MACROMOLECULES, vol. 10, 1977, pages 532
See also references of EP 3385287A4
Attorney, Agent or Firm:
IWATANI, Ryo (JP)
Download PDF: