METHOD FOR PRODUCING CARBOXYL-GROUP-CONTAINING POLYMER COMPOSITION

Title:

METHOD FOR PRODUCING CARBOXYL-GROUP-CONTAINING POLYMER COMPOSITION

Document Type and Number:

WIPO Patent Application WO/2017/170577

Kind Code:

A1

Abstract:

Provided is a method for producing a carboxyl-group-containing polymer composition that is excellent in all of dispersibility to water etc. immediately after production, storage stability, and transparency in a neutralized viscous liquid. Disclosed is a method for producing a carboxyl-group-containing polymer composition that comprises: (A) a carboxyl-group-containing polymer which is a copolymer of monomers comprising (a-1) an α,β-unsaturated carboxylic acid and (a-2) a compound that includes at least two ethylenically unsaturated groups in the molecule thereof; and (B) a nonionic surfactant. The method for producing said carboxyl-group-containing polymer composition comprises a step for copolymerizing said monomers. In said step, said nonionic surfactant (B) is added to the system when the polymerization rate of said α,β-unsaturated carboxylic acid (a-1) has reached 70-100%.

Inventors:

NISHIGUCHI SATOSHI (JP)
MURAKAMI RYOSUKE (JP)
IZAWA SHINGO (JP)
IKEDA MIYU (JP)
NAKASHIMA RIE (JP)

Application Number:

PCT/JP2017/012700

Publication Date:

October 05, 2017

Filing Date:

March 28, 2017

Export Citation:

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Assignee:

SUMITOMO SEIKA CHEMICALS (JP)

International Classes:

C08L33/02; C08F2/08

Domestic Patent References:

WO2016084624A1	2016-06-02
WO2016056591A1	2016-04-14

Foreign References:

JPH0748554A	1995-02-21
JP2012007010A	2012-01-12
JP2011105833A	2011-06-02
JPS61223010A	1986-10-03
JP2004204093A	2004-07-22
JP2003010631A	2003-01-14
JP2000355614A	2000-12-26

Other References: