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Title:
METHOD FOR PURIFYING SULFO GROUP-CONTAINING HYPERBRANCHED POLYMER AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2019/054301
Kind Code:
A1
Abstract:
Provided is a method for purifying a sulfo group-containing hyperbranched polymer characterized by including a reprecipitation step that introduces a sulfuric acid solution of a sulfo group-containing hyperbranched polymer into water to reprecipitate the sulfo group-containing hyperbranched polymer, and an aggregation step that mixes and stirs a solution containing the precipitate obtained in the reprecipitation step and an organic solvent to aggregate the precipitate.

Inventors:
TSUDA YUTARO (JP)
Application Number:
PCT/JP2018/033252
Publication Date:
March 21, 2019
Filing Date:
September 07, 2018
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Assignee:
NISSAN CHEMICAL CORP (JP)
International Classes:
C08G12/40
Domestic Patent References:
WO2012161306A12012-11-29
WO2012161307A12012-11-29
WO2014042080A12014-03-20
WO2016035823A12016-03-10
WO2016117524A12016-07-28
WO2016117531A12016-07-28
Foreign References:
JP2012245441A2012-12-13
JP2013006756A2013-01-10
Attorney, Agent or Firm:
PATENT PROFESSIONAL CORPORATION EI-MEI PATENT OFFICE (JP)
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