Title:
OXYGEN SCAVENGER AND METHOD OF DEOXIDIZING TREATMENT
Document Type and Number:
WIPO Patent Application WO/2004/097071
Kind Code:
A1
Abstract:
An oxygen scavenger which is highly effective in deoxidizing under a wide range of conditions and is useful as a volatile oxygen scavenger as a hydrazine substitute. The oxygen scavenger comprises a heterocyclic compound having an N-substituted amino group, e.g., 1-amino-4-methylpiperazine, and a hydroxyamine compound, e.g., N,N-diethylhydroxyamine. It may further contain a polyhydric phenol catalyst, e.g., pyrogallol. When added to the water to be supplied to the water system of, e.g., a boiler, the oxygen scavenger deoxidizes the aqueous system.
Inventors:
SHIMURA YUKIMASA (JP)
TAKAHASHI JUNICHI (JP)
TAKAHASHI JUNICHI (JP)
Application Number:
PCT/JP2004/003701
Publication Date:
November 11, 2004
Filing Date:
March 18, 2004
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
SHIMURA YUKIMASA (JP)
TAKAHASHI JUNICHI (JP)
SHIMURA YUKIMASA (JP)
TAKAHASHI JUNICHI (JP)
International Classes:
C02F1/68; C09K15/16; C02F1/70; C23F11/14; C23F14/02; F24D19/00; (IPC1-7): C23F14/02; C02F1/58
Foreign References:
| JP2002129366A | 2002-05-09 | |||
| JPH10323561A | 1998-12-08 | |||
| JP2003073865A | 2003-03-12 |
Attorney, Agent or Firm:
Shigeno, Tsuyoshi (Shinjuku 2-chome Shinjuku-k, Tokyo 22, JP)
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