Fire suppressant powder
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United States of America Patent
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Aug 17, 1999
Grant Date -
N/A
app pub date -
Dec 3, 1997
filing date -
Feb 5, 1996
priority date (Note) -
Expired
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Abstract
A fire suppressant powder with particle sizes less than 5 .mu.m is made by a chemical reaction between a gas or vapour of a first material and a vapour or an aerosol of a second material. For example an aerosol of sodium hydroxide droplets may be reacted with carbon dioxide gas to produce sodium bicarbonate powder; or boron halide vapour may be reacted with steam to form boric acid powder The powder may be used in fire extinguishers either on its own, or combined with other ingredients such as silica and/or alumina, and calcium stearate.
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