Title:
COMPOSITION, DISPERSING AGENT FOR SUSPENSION POLYMERIZATION, AND METHOD FOR PRODUCING VINYL-BASED POLYMER
Document Type and Number:
WIPO Patent Application WO/2024/075829
Kind Code:
A1
Abstract:
Provided are: a composition which contains a vinyl alcohol-based polymer and an amphipathic substance and which can yield polymer particles having a small average particle diameter, few coarse particles and good plasticizer-absorbing properties even if suspension polymerization is carried out at a high temperature; a dispersing agent for suspension polymerization, which contains this composition; and a method for producing a vinyl-based polymer. The present invention is a composition which contains a vinyl alcohol-based polymer (A) and an amphipathic substance (B). The vinyl alcohol-based polymer (A) is a carbonyl group-containing vinyl alcohol-based polymer having a degree of saponification of 60 mol% or more. The amphipathic substance (B) includes at least one type selected from the group consisting of a surfactant and a vinyl alcohol-based polymer having a degree of saponification of less than 60 mol%.
More Like This:
Inventors:
OKAMOTO YUJI (TH)
SEKI MICHINARI (JP)
SEKI MICHINARI (JP)
Application Number:
PCT/JP2023/036477
Publication Date:
April 11, 2024
Filing Date:
October 06, 2023
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
C08L29/04; C08F8/12; C08F16/34; C08F18/08
Domestic Patent References:
| WO2015019614A1 | 2015-02-12 | |||
| WO2014104160A1 | 2014-07-03 | |||
| WO2022071345A1 | 2022-04-07 | |||
| WO2015194611A1 | 2015-12-23 | |||
| WO2017094698A1 | 2017-06-08 | |||
| WO2018096937A1 | 2018-05-31 | |||
| WO2021100638A1 | 2021-05-27 | |||
| WO2019031461A1 | 2019-02-14 |
Attorney, Agent or Firm:
IKEDA Yoshinori (JP)
Download PDF: