Title:
WATER-BASED FOAM FIRE EXTINGUISHER
Document Type and Number:
WIPO Patent Application WO/2000/009215
Kind Code:
A1
Abstract:
A water-based foam fire extinguisher excellent in foaming properties and film-forming properties in a low temperature region which comprises an aqueous solution of at least one member selected among potassium hydrogen carbonate, ammonium phosphate, ammonium sulfate, ammonium bromide, boron oxide, and potassium tetraborate and, incorporated in the solution, a freezing point depressant so as to have a freezing point of -20 °C or lower, characterized by containing a perfluoroalkylbetaine as a fluorochemical surfactant and one or more amide-amino acid type surfactants represented by general formula (1) and/or (2) (wherein R?1¿ represents C¿7-23? alkyl, hydroxyalkyl, aralkyl, or alkenyl; and X represents an alkali metal or hydrogen) as hydrocarbon surfactants.
Inventors:
Shiga, Hiroshi (69-17 Tsuzumi Chigasaki-shi, Kanagawa, 253-0006, JP)
Application Number:
PCT/JP1999/004409
Publication Date:
February 24, 2000
Filing Date:
August 16, 1999
Export Citation:
Assignee:
GTL CO., LTD. (69-17 Tsuzumi Chigasaki-shi, Kanagawa, 253-0006, JP)
Shiga, Hiroshi (69-17 Tsuzumi Chigasaki-shi, Kanagawa, 253-0006, JP)
Shiga, Hiroshi (69-17 Tsuzumi Chigasaki-shi, Kanagawa, 253-0006, JP)
International Classes:
A62D1/04; A62D1/02; A62D1/00; (IPC1-7): A62D1/04
Attorney, Agent or Firm:
Nishi, Yoshiyuki (Room 211 26-32, Nakahara 4-chome Isogo-ku, Yokohama Kanagawa, 235-0036, JP)
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