Title:
METHOD FOR PRODUCING PAPERMAKING SIZING AGENT
Document Type and Number:
WIPO Patent Application WO/2023/282038
Kind Code:
A1
Abstract:
[Problem] The present invention addresses the problem of providing a method for producing a papermaking sizing agent having an excellent sizing effect and mechanical stability. [Solution] A method for producing a papermaking sizing agent, characterized in that when a hydrophobic monomer (B) is polymerized in the presence of a dispersant (A) containing starches, the papermaking sizing agent is obtained using iodine and/or an iodine compound (C) as iodine atoms in the amount of 50 ppm or more with respect to the hydrophobic monomer (B). Preferably, the ratio by mass of the dispersant (A) containing starches to the hydrophobic monomer (B) is 20−80:80−20.
Inventors:
HIRAKAWA FUMIYA (JP)
MIYAMOTO KAZUYA (JP)
TAMIYA KOICHI (JP)
MIYAMOTO KAZUYA (JP)
TAMIYA KOICHI (JP)
Application Number:
PCT/JP2022/024493
Publication Date:
January 12, 2023
Filing Date:
June 20, 2022
Export Citation:
Assignee:
SEIKO PMC CORP (JP)
International Classes:
D21H21/16; C08F2/20; C08F2/22; C08F4/40; C08F12/08; C08F20/18
Domestic Patent References:
| WO2020059194A1 | 2020-03-26 |
Foreign References:
| JP2017020132A | 2017-01-26 | |||
| JP2014501289A | 2014-01-20 | |||
| JP2000086710A | 2000-03-28 | |||
| JPS4913406A | 1974-02-05 |
Attorney, Agent or Firm:
TSUTA Yasuhiro (JP)
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