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1. (WO2018038112) MODIFIED VINYL ALCOHOL POLYMER, AND DIFFUSION STABILIZER FOR SUSPENSION POLYMERIZATION

Pub. No.:    WO/2018/038112    International Application No.:    PCT/JP2017/029975
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Wed Aug 23 01:59:59 CEST 2017
IPC: C08F 290/06
B01F 17/42
B01F 17/52
C08F 2/20
C08F 8/12
C08F 218/06
Applicants: DENKA COMPANY LIMITED
デンカ株式会社
Inventors: WATANABE,Wataru
渡辺 亘
Title: MODIFIED VINYL ALCOHOL POLYMER, AND DIFFUSION STABILIZER FOR SUSPENSION POLYMERIZATION
Abstract:
The purpose of the present invention is to provide a diffusion stabilizer for suspension polymerization satisfying various performance requirements for suspension polymerization of a vinyl compound such as vinyl chloride. This modified vinyl alcohol polymer has a monomer unit represented by general formula (I), and the degree of modification thereof is 0.01-10 mol%. General formula (I): (in the formula, BO represents an oxybutylene unit, EO represents an oxyethylene unit, the numbers of oxyalkylene units thereof forming repeating units are respectively represented by m and n, and 1≤m≤10 and 1≤n≤60 are satisfied.)