Title:
懸濁重合用分散剤及びビニル系重合体の製造方法
Document Type and Number:
Japanese Patent JP7321394
Kind Code:
B2
Abstract:
A dispersant for suspension polymerization may, even when a usage amount thereof is low, enable obtaining polymer particles having a small average particle diameter with few coarse particles, and having favorable plasticizer absorptivity. Such a dispersant may include a vinyl alcohol polymer having a structure of following formula (1)and satisfy inequality (2)0.4≤[X]×102/[Ra,1]2≤3.0 (2).In formula (1), R is a hydrocarbon group having 4 or more carbon atoms. In inequality (2), [X] is a mole percentage content of the structure of formula (1) with respect to total structural units of the vinyl alcohol polymer; and [Ra,1] is an HSP distance ((J/cm3)1/2) between the structure of formula (1) and vinyl chloride.
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Inventors:
Misuzu Fujimori
Masami Kato
Tatsuya Tanida
Masami Kato
Tatsuya Tanida
Application Number:
JP2022560748A
Publication Date:
August 04, 2023
Filing Date:
October 29, 2021
Export Citation:
Assignee:
KURARAY CO.,LTD.
International Classes:
C08F2/20; C08F8/12; C08F14/00; C08F16/06; C09K23/52
Domestic Patent References:
| JP2004250695A |
Foreign References:
| CN105218713A | ||||
| WO2018096937A1 | ||||
| WO2019156006A1 | ||||
| WO2015119144A1 | ||||
| WO2018083968A1 |
Attorney, Agent or Firm:
Yoshinori Ikeda
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