検索画面に戻る Go Research

	(334Kb)

[A-7.2.1 Fundamental Studies on the Development of Halon Alternatives]

[Contact Person]

Takashi Abe
Chief, Fluorine Chemistry Laboratory
National Industrial Research Institute of Nagoya
Agency of Industrial Science and Technology
1-1, Hirate-cho, Kita-ku, Nagoya 462 Japan
Phone 81-052-911-2111(Ext.330), Fax 81-52-916-2802

[Total Budget for FY1990-1992]

12,584,000 Yen

[Abstract]

This project aims at the development of perfluoroamine-type new Halon substitutes. Perfluoroamines and their derivatives are considered to be the prospective candidate for the new Halon substitute due to having some degradability at the C-F bond alpha to the nitrogen, and very low toxicity toward human body as their derivatives are being used as an artificial blood substitute. This program consists of 1) the preparation of nitrogen-containing perfluoro-alkylbromides, 2) the evaluation of degradability and fire extinguishing ability for perfluoroamines containing a bromine. It was found that perfluoro(dimethyl-aminomethyl bromide) had less environmental impacts than that of Halon 2402 from the experiments in the liquid phase reaction with in situ generated OH radical. Furthermore, perfluoroamines, which does not contain a bromine atom as the requisite atom for imparting the suffrcient fire extinguishing ability, showed unexpectedly good fire extinguishing ability. For example, perfluoro(2-dimethyl-aminoethyl bromide) showed better fire extinguishing ability than that of Halon 1301, and perfluorotriethylamine showed comparable one to that of Halon 1301. During this project time, regulations for the use of chlorine and bromine-containing volatile compounds were strengthened in connection with the accelerated depletion of ozone layer. So, perfluorotriethyl amine and its homologues, of which ODP is 0 due to the absence of bromine in the molecule, were found to be the most promising candidate for new Halon substitute.

[Key Words]

Halon alternatives, Fire extinguisher, perfluoroamine, bromides