Compositions – Fire-extinguishing
Patent
1990-04-24
1991-10-01
Stoll, Robert L.
Compositions
Fire-extinguishing
252 8, 169 44, 169 46, A62D 100
Patent
active
050531468
ABSTRACT:
An efficient fire extinguishing agent is proposed which is suitable for extinguishing fire of a burning metal such as a magnesium powder and used, for example, as a filling of fire extinguishers with stability over a long period of time for storage without decreasing the flowability and ejectability from the extinguisher. The fire extinguishing agent is a powdery blend of (a) 95 to 70% by weight of a high-purity boron oxide powder having a specified high B.sub.2 O.sub.3 purity and a low water content and (b) 5 to 30% by weight of an inorganic powder of spherical particle configuration. Glass beads of a specified particle diameter and silica-alumina-based hollow microspheres serve as the inorganic powder.
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patent: 3055435 (1962-09-01), Warnock et al.
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patent: 4830762 (1989-05-01), Yamaguchi et al.
patent: 4838946 (1989-06-01), Yamaguchi et al.
patent: 4879050 (1989-11-01), Yamaguchi et al.
patent: 4915853 (1990-04-01), Yamaguchi
Bhat Nina
Shin-Etsu Handotai & Co., Ltd.
Stoll Robert L.
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