触媒成分の分離方法

Japanese Patent JP7373160

B2

To provide a method for separating a catalyst component which can separate a platinum group element derived from a platinum group element-containing catalyst from a hydrogenated nitrile rubber with high efficiency, and can easily recover a water-soluble polymer after having been used for separation of the platinum group element from the hydrogenated nitrile rubber with high purity and high yield.SOLUTION: A method for separating a catalyst component of a hydrogenated nitrile rubber includes: a mixing step of mixing a water-soluble organic solvent solution of a hydrogenated nitrile rubber obtained by subjecting nitrile rubber to hydrogenation reaction in the presence of a platinum group element-containing catalyst and a water-soluble polymer solution to obtain a mixed liquid; and a water-soluble polymer precipitation step of precipitating the water-soluble polymer while taking the platinum group element in the water-soluble polymer by stirring the mixed liquid, in which the water-soluble polymer solution contains the water-soluble polymer, a water-soluble organic solvent and water, and a weight ratio of the water-soluble organic solvent to the water in the water-soluble polymer solution is 1:1 to 3:1.SELECTED DRAWING: None

WO/2003/046024	AQUEOUS DISPERSIONS OF WATER-SOLUBLE POLYMERS OF N-VINYL CARBOXYLIC ACID AMIDES, METHOD FOR THE PRODUCTION THEREOF AND THEIR USE
JP2002212380	HYDROGENATED AROMATIC VINYL-BASED COPOLYMER COMPOSITION AND SUBSTRATE USING THE SAME AND USED FOR OPTICAL DISK

Ippou Furukawa
Juzo Oyamada
Hidetaka Kawakita

JP2019120885A

November 02, 2023

June 28, 2019

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Nippon Zeon Co., Ltd.
National University Corporation Saga University

C08F8/04; C08C19/02; C08F236/12

WO2018016400A1

Patent Attorney Corporation Tokoshie Patent Office

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