ビニルエステル／エチレン性不飽和カルボン酸エステル共重合体のケン化物およびその製造方法

Title:

ビニルエステル／エチレン性不飽和カルボン酸エステル共重合体のケン化物およびその製造方法

Document Type and Number:

Japanese Patent JP5844356

Kind Code:

B2

Abstract:

The present invention provides a saponification product of a vinyl ester/ethylenically unsaturated carboxylic acid ester copolymer having superior tolerance of the aqueous thickening liquid against mechanical shear. More specifically, the present invention provides a saponification product of a vinyl ester/ethylenically unsaturated carboxylic acid ester copolymer having the superior tolerance, by polymerizing a mixture where the molar ratio of the vinyl ester/ethylenically unsaturated carboxylic acid ester is from 8/2 to 3/7, and saponifying the obtained copolymer in a mixed solvent where the mass composition ratio of an aqueous organic solvent/water mixture solvent is from 3/7 to 8/2.

Inventors:

Tomo Yamazaki
Yuji Kanehara
Shigeo Hamamoto

Application Number:

JP2013515073A

Publication Date:

January 13, 2016

Filing Date:

May 01, 2012

Export Citation:

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