US4830762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for fire extinguishment of liquid chlorosilane compound
Assignee: Shin-Etsu Handotai Co Ltd
•
Filing: 1987-09-02
•
Granted: 1989-05-16
•
Expires: 2007-09-02
Abstract
Abstract The invention provides a rapid and reliable method for extinguishment of fire on a chlorosilane compound such as trichlorosilane which is hardly extinguishable once set on fire by any conventional fire-extinguishing methods. The inventive method comprises sprinkling an inert siliceous powder composed of porous particles of specified silica or silica-alumina content having a specified particle diameter, pore diameter and porosity over the surface of the burning chlorosilane compound. The efficiency of fire-extinguishment can further be enhanced when sprinkling of the porous siliceous powder is followed by spraying of water or a highly halogenated hydrocarbon compound, e.g., monobromo monochloromethane and carbon tetrachloride, over the siliceous powder.
Inventors
- 👤 Hisayoshi Yamaguchi
- 👤 Tamotsu Yanagisawa
- 👤 Masao Yabuzuka
- 👤 Takashi Tanaka
- 👤 Masakatu Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:09
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0028; A62D1/0057; A62D1/0007; A62D1/0014
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
89 words
A method for extinguishing fire on the surface of a liquid chlorosilane compound which comprises: sprinkling an inert siliceous powder consisting essentially of porous particles having a particle diameter in the range from 5 μm to 5 mm, a pore diameter in the range from 0.1 μm to 100 μm and a porosity in the range from 45% to 85%, the siliceous powder containing at least 80% by weight of silica or at least 90% by weight of silica and alumina, over the surface of the burning chlorosilane compounds.
Claim 2
Independent Claim
89 words
A method for extinguishing fire on the surface of a liquid chlorosilane compound which comprises: sprinkling an inert siliceous powder consisting essentially of porous particles having a particle diameter in the range from 5 μm to 5 mm, a pore diameter in the range from 0.1 μm to 100 μm and a porosity in the range from 45% to 85%, the siliceous powder containing at least 80% by weight of silica or at least 90% by weight of silica and alumina, over the surface of the burning chlorosilane compounds.
Claim 3
Dependent Claim
48 words
The method of extinguishing fire on the surface of a liquid chlorosilane compound as claimed in claim 1 wherein the siliceous powder is sprinkled over the surface of the burning chlorosilane compound in an amount of at least 100 kg per cubic meter of the burning chlorosilane compound.
Claim 4
Independent Claim
110 words
A method for extinguishing fire on the surface of a liquid chlorosilane compound which comprises the successive steps of: (a) sprinkling an inert siliceous powder consisting essentially of porous particles having a particle diameter in the range from 5 μm to 5 mm, a pore diameter in the range from 0.1 μm to 100 μm and a porosity in the range from 45% to 85%, the siliceous powder containing at least 80% by weight of silica or at least 90% by weight of silica and alumina, over the surface of the burning chlorosilane compound; and then (b) spraying water or a highly halogenated liquid hydrocarbon compound over the inert powder.
Claim 5
Independent Claim
110 words
A method for extinguishing fire on the surface of a liquid chlorosilane compound which comprises the successive steps of: (a) sprinkling an inert siliceous powder consisting essentially of porous particles having a particle diameter in the range from 5 μm to 5 mm, a pore diameter in the range from 0.1 μm to 100 μm and a porosity in the range from 45% to 85%, the siliceous powder containing at least 80% by weight of silica or at least 90% by weight of silica and alumina, over the surface of the burning chlorosilane compound; and then (b) spraying water or a highly halogenated liquid hydrocarbon compound over the inert powder.
Claim 6
Dependent Claim
39 words
The method for extinguishing fire on the surface of a liquid chlorosilane compound as claimed in claim 3 wherein the highly halogenated liquid hydrocarbon compound is selected from the group consisting of monobromo monochloromethane, carbon tetrachloride and tetrafluoro dibromoethane.
Claim 7
Dependent Claim
48 words
The method for extinguishing fire on the surface of a liquid chlorosilane compound as claimed in claim 3 wherein the siliceous powder is sprinkled over the surface of the burning chlorosilane compound in an amount of at least 100 kg per cubic meter of the burning chlorosilane compound.
References Cited (Backward Citations)
US2294532A
Cited
US2368209A
Cited
US2880172A
Cited
US3055435A
Cited
US3393155A
Cited
US3830738A
Cited
US3963627A
Cited
US4173538A
Cited
US4226727A
Cited
JPS60122576A
Cited
JPS6260572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-15 | 1992-11-14 | 1993-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-15 | 1996-11-14 | 1997-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-15 | 2000-11-14 | 2001-05-16 | $7700.00 | Window Closed / Lapsed |