Title:
BOILER WATER TREATMENT AGENT AND METHOD FOR THE TREATMENT OF WATER
Document Type and Number:
WIPO Patent Application WO/2010/016435
Kind Code:
A1
Abstract:
A boiler water treatment agent which exerts excellent anticorrosive performance in a wider region of a boiler water system; and a method for the treatment of water. Use of a boiler water treatment agent which contains both a condensed tannin and/or a derivative thereof and a caustic alkali and in which the B/A mass ratio of the content (B) of the caustic alkali to the content (A) of the condensed tannin and/or derivative thereof is 0.4 or above; or addition of both a condensed tannin and/or a derivative thereof and a caustic alkali to a boiler water system in such amounts as to give a B/A mass ratio of 0.4 or above wherein (B) is the amount of the added caustic alkali and (A) is the amount of the added condensed tannin and/or derivative thereof.
Inventors:
SHIMURA Yukimasa (3-4-7 Nishi-Shinjyuku, Shinjuku-k, Tokyo 83, 〒1608383, JP)
Application Number:
JP2009/063649
Publication Date:
February 11, 2010
Filing Date:
July 31, 2009
Export Citation:
Assignee:
Kurita Water Industries Ltd. (3-4-7, Nishi-Shinjyuku Shinjuku-k, Tokyo 83, 〒1608383, JP)
栗田工業株式会社 (〒83 東京都新宿区西新宿三丁目４番７号 Tokyo, 〒1608383, JP)
栗田工業株式会社 (〒83 東京都新宿区西新宿三丁目４番７号 Tokyo, 〒1608383, JP)
International Classes:
C23F11/12; C02F1/58; C02F5/10; F22B37/56
Attorney, Agent or Firm:
WATANABE Kaoru (KUNPU INTELLECTUAL PROPERTY AGENTS, SUCCESS-SENGAKUJI BLDG. 3F 2-20-29, Takanawa, Minato-k, Tokyo 74, 〒1080074, JP)
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