Title:
WATER TREATMENT AGENT
Document Type and Number:
WIPO Patent Application WO/2020/149217
Kind Code:
A1
Abstract:
Provided is a water treatment agent that excellently exhibits the effect of hypobromous acid when added to an aqueous system. This water treatment agent: contains the following components (a) to (c), i.e., (a) a chloramine compound, (b) a bromide salt, and (c) 1-18 mass% of a carboxyl-group polymer having a carboxyl group content of 0.8 g COOH/g polymer or less, the water treatment agent having a pH of 10 or higher; and/or includes an alkaline agent, a chloramine compound, and a bromide salt, the water treatment agent being such that the total chlorine detection rate after production is 95% or higher, and the free chlorine content within the total chlorine concentration is 0.05% (as Cl2) or less. The molar ratio of the chloramine compound and the bromide salt is suitably 1:0.1-1.0.
Inventors:
NAKANO TADASHI (JP)
NAGAI NAOHIRO (JP)
NAGAI NAOHIRO (JP)
Application Number:
PCT/JP2020/000550
Publication Date:
July 23, 2020
Filing Date:
January 10, 2020
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
C02F5/10; C02F1/50; C02F1/76
Foreign References:
| JP2017214406A | 2017-12-07 | |||
| JP2017186294A | 2017-10-12 |
Attorney, Agent or Firm:
WATANABE Kaoru (JP)
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