Title:
WATER TREATMENT AGENT AND CONTROL METHOD OF COOLING WATER OR THE LIKE
Document Type and Number:
Japanese Patent JP2008307512
Kind Code:
A
Abstract:
To provide a water treatment agent and a control method of cooling water or the like, capable of suppressing formation of slime, attachment of scale and corrosion.
The water treatment agent comprises an aqueous solution containing a water-soluble polymer, oxycarboxylic acid, an azole compound, an isothiazoline compound, and a phosphon compound as effective components. The agent is used in a state of keeping concentrations of the water-soluble polymer, oxycarboxylic acid, the azole compound, isothiazoline compound and phosphon compound, equal to or more than 12 mg/L, 10 mg/L, 1 mg/L, 0.3 mg/L, and 8 mg/L, respectively.
Inventors:
HIRATA YOICHI
MACHIZAWA KENJI
ITO MASAHIKO
MAEKOYA CHIAKI
MACHIZAWA KENJI
ITO MASAHIKO
MAEKOYA CHIAKI
Application Number:
JP2007160431A
Publication Date:
December 25, 2008
Filing Date:
June 18, 2007
Export Citation:
Assignee:
HITACHI BUILDING SYS CO LTD
International Classes:
C02F5/10; C02F1/50; C02F5/12; C02F5/14; F28G13/00
Domestic Patent References:
| JP2004513102A | 2004-04-30 | |||
| JP2001152372A | 2001-06-05 | |||
| JP2002193711A | 2002-07-10 | |||
| JPH0699194A | 1994-04-12 |
Attorney, Agent or Firm:
Patent Business Corporation Takewa International Patent Office