Title:
WATER TREATMENT CHEMICAL AND WATER TREATMENT MEMBRANE
Document Type and Number:
WIPO Patent Application WO/2023/058485
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a water treatment chemical that can impart excellent water permeability and water permeability retention to a water treatment membrane. The present invention relates to a water treatment chemical containing a polymer having a structural unit (I) represented by general formula (1) (in the formula: R1 represents a hydrogen atom or a methyl group; R2 represents a direct bond, -CH2-, -CH2CH2-, or -CO-; R3 may be the same or different and represent a C1-20 alkylene group; X represents -CH2CH(OH)CH2(OH) or -CH(-CH2OH)2; and n is the number of moles of the oxyalkylene group added, and represents a number ranging from 0 to 100), and a structural unit (II) derived from a carboxyl-group-containing monomer.
Inventors:
MIYOSHI YASUYUKI (JP)
WATABE HIROYASU (JP)
WATABE HIROYASU (JP)
Application Number:
PCT/JP2022/035684
Publication Date:
April 13, 2023
Filing Date:
September 26, 2022
Export Citation:
Assignee:
NIPPON CATALYTIC CHEM IND (JP)
International Classes:
B01D65/08
Domestic Patent References:
| WO2021065910A1 | 2021-04-08 | |||
| WO2020152969A1 | 2020-07-30 |
Foreign References:
| JPH09141090A | 1997-06-03 | |||
| JP2009172454A | 2009-08-06 | |||
| JP2011526830A | 2011-10-20 | |||
| JPH09168737A | 1997-06-30 | |||
| JP2004358357A | 2004-12-24 | |||
| JP2021059662A | 2021-04-15 | |||
| JP2019042689A | 2019-03-22 |
Attorney, Agent or Firm:
WISEPLUS IP FIRM (JP)
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