Title:
懸濁重合用分散助剤およびそれを用いるビニル系重合体の製造方法、並びに塩化ビニル樹脂
Document Type and Number:
Japanese Patent JP6893175
Kind Code:
B2
Abstract:
An object of the present invention is to provide a dispersion assistant that, when used for suspension polymerization of a vinyl-based compound, achieves stable production of a good polymer (vinyl-based resin) without much scale adhesion on the polymerization tank even in the cases where used in a large amount. Provided is a dispersion assistant for suspension polymerization, which comprises a polyvinyl alcohol-based polymer (A) having an acetal group (a) having an olefinic unsaturated double bond, the polymer having a saponification degree of 60 mol% or less.
Inventors:
Yoshiaki Kozuka
Takehiro Omori
Takehiro Omori
Application Number:
JP2017553859A
Publication Date:
June 23, 2021
Filing Date:
November 29, 2016
Export Citation:
Assignee:
Japan Vinegar Poval Co., Ltd.
International Classes:
C08F2/20; C08F8/28; C08F14/06; C08F16/06; C08F290/12; C08L29/14
Domestic Patent References:
| JP5279405A | ||||
| JP2009108305A | ||||
| JP6279539A | ||||
| JP61230138A |
Foreign References:
| WO2015182567A1 | ||||
| WO2015005153A1 |
Attorney, Agent or Firm:
Ryu Iwatani