US4563287A
Expired / Lapsed
US
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Aqueous fire-extinguishing composition
Assignee: Daikin Industries Ltd
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Filing: 1983-08-16
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Granted: 1986-01-07
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Expires: 2003-08-16
Abstract
Abstract An aqueous fire-extinguishing composition comprising an aqueous solvent and a water-soluble high molecular compound which contains a fluoroalkyl group and a water-solubilizable group, has an average molecular weight of not less than 5,000 and fluorine content of not less than 10% by weight and is soluble in water in an amount of at least 0.1% by weight at 25 DEG C. and the surface tension of which is not more than 50 dyn/cm when measured on 0.1 to 5.0% by weight aqueous solution at 25 DEG C. has excellent fire-extinguishing performance on fire of cooking oil, particularly of frying oil.
Inventors
- 👤 Iwao Hisamoto
- 👤 Chiaki Maeda
- 👤 Takasige Esaka
- 👤 Masaru Hirai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:06
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0028; A62D1/0035
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
123 words
An aqueous non-foaming cooking oil fire-extinguishing composition comprising an aqueous solvent and a water-soluble high molecular compound, said water-soluble high molecular compound containing a fluoroalkyl group and one or more water-solubilizable groups per each fluoroalkyl group; having an average molecular weight of not less than 5000 and fluorine content of not less than 15% by weight; being soluble in water in an amount of at least 0.1% by weight of 25° C.; and the surface tension of which is not more than 50 dyn/cm when measured on 0.1 to 5.0% by weight aqueous solution at 25° C.; and the amount of the water-soluble high molecular compound being from 0.1 to 60% by weight on the basis of the weight of said aqueous solvent.
Claim 2
Dependent Claim
123 words
An aqueous non-foaming cooking oil fire-extinguishing composition comprising an aqueous solvent and a water-soluble high molecular compound, said water-soluble high molecular compound containing a fluoroalkyl group and one or more water-solubilizable groups per each fluoroalkyl group; having an average molecular weight of not less than 5000 and fluorine content of not less than 15% by weight; being soluble in water in an amount of at least 0.1% by weight of 25° C.; and the surface tension of which is not more than 50 dyn/cm when measured on 0.1 to 5.0% by weight aqueous solution at 25° C.; and the amount of the water-soluble high molecular compound being from 0.1 to 60% by weight on the basis of the weight of said aqueous solvent.
Claim 3
Dependent Claim
56 words
The aqueous non-foaming fire-extinguishing composition according to claim 1, wherein the water-solubilizable group borne on the water-soluble high molecular compound is one selected from the group consisting of hydroxyl; 2-oxopyrrolidinyl; carboxyl, phosphate, sulfate and sulfo, in a free or salt form; amino in a free or salt form, and polyoxyalkylene in a free or salt form.
Claim 4
Dependent Claim
25 words
The aqueous non-foaming fire-extinguishing composition according to claim 1, wherein the average molecular weight of the water-soluble high molecular compound is not less than 10,000.
Claim 5
Dependent Claim
26 words
The aqueous non-foaming fire-extinguishing composition according to claim 1, wherein the fluorine content of the water-soluble high molecular compound is not less than 15% by weight.
Claim 6
Dependent Claim
30 words
The aqueous non-foaming fire-extinguishing composition according to claim 1, wherein the water-soluble high molecular compound is soluble in water at 25° C. in an amount less than 0.5% by weight.
Claim 7
Dependent Claim
25 words
The aqueous non-foaming fire-extinguishing composition according to claim 1, wherein the surface tension of the water-soluble high molecular compound is not more than 40 dyn/cm.
Claim 8
Dependent Claim
26 words
The aqueous non-foaming fire-extinguishing composition according to claim 1, wherein the fluoroalkyl group borne on the water-soluble high molecular compound has 4 to 20 carbon atoms.
Claim 9
Dependent Claim
130 words
An aqueous non-foaming fire-extinguishing composition adapted for extinguishing cooking oil fires which consists essentially of an aqueous solvent and a water-soluble high molecular compound, said water-soluble high molecular compound containing a fluoroalkyl group and one or more water-solubilizable groups per each fluoroalkyl group; having an average molecular weight of not less than 5000 and fluorine content of not less than 15% by weight; being soluble in water in an amount of at least 0.1% by weight at 25° C.; and the surface tension of which is not more than 50 dyn/cm when measured on 0.1 to 5.0% by weight aqueous solution at 25° C.; and the amount of the water-soluble high molecular compound being from 0.1 to 60% by weight on the basis of the weight of said aqueous solvent.
Claim 10
Dependent Claim
130 words
An aqueous non-foaming fire-extinguishing composition adapted for extinguishing cooking oil fires which consists essentially of an aqueous solvent and a water-soluble high molecular compound, said water-soluble high molecular compound containing a fluoroalkyl group and one or more water-solubilizable groups per each fluoroalkyl group; having an average molecular weight of not less than 5000 and fluorine content of not less than 15% by weight; being soluble in water in an amount of at least 0.1% by weight at 25° C.; and the surface tension of which is not more than 50 dyn/cm when measured on 0.1 to 5.0% by weight aqueous solution at 25° C.; and the amount of the water-soluble high molecular compound being from 0.1 to 60% by weight on the basis of the weight of said aqueous solvent.
Claim 11
Dependent Claim
55 words
An aqueous fire-extinguishing composition according to claim 8, wherein the water-solubilizable group borne on the water-soluble high molecular compound is one selected from the group consisting of hydroxyl; 2-oxopyrrolidinyl; carboxyl, phosphate, sulfate and sulfo, in a free or salt form; amino in a free or salt form, and polyoxyalkylene in a free or salt form.
Claim 12
Dependent Claim
24 words
An aqueous fire-extinguishing composition according to claim 8, wherein the average molecular weight of the water-soluble high molecular compound is not less than 10,000.
Claim 13
Dependent Claim
25 words
An aqueous fire-extinguishing composition according to claim 8, wherein the fluoroalkyl group borne on the water-soluble high molecular compound has 4 to 20 carbon atoms.
Claim 14
Dependent Claim
26 words
The aqueous non-foaming fire-extinguishing composition according to claim 8, wherein the fluorine content of the water-soluble high molecular compound is not less than 15% by weight.
Claim 15
Dependent Claim
29 words
The aqueous non-foaming fire-extinguishing composition of claim 8, wherein the water-soluble high molecular compound is soluble in water at 25° C. in an amount less than 0.5% by weight.
Claim 16
Dependent Claim
25 words
The aqueous non-foaming fire-extinguishing composition according to claim 8, wherein the surface tension of the water-soluble high molecular compound is not more than 40 dyn/cm.
Claim 17
Dependent Claim
63 words
The aqueous non-foaming fire-extinguishing composition according to claim 8, which further contains a fluorine-free water-soluble high molecular compound selected from the group consisting of polyethylene glycol having a molecular weight of not less than 2000, polyvinyl alcohol, polysodium acrylate, polyacrylic amide, a copolymer of acrylic acid and ethylene, a copolymer of maleic anhydride and methyl vinyl ether, and modified (or water-solubilized) natural gums.
Claim 18
Dependent Claim
71 words
The aqueous non-foaming fire-extinguishing composition according to claim 8, which further contains a surfactant selected from the group consisting of C 7 F 15 COONH 4 , C 8 F 17 SO 2 NHC 3 H 6 N.sup.⊕ (CH 3 ) 3 I.sup.⊖, C 8 F 17 O--(C 2 H 4 O) 15 H, ##STR13## C 18 H 37 COOK, C 12 H 25 N.sup.⊕ (CH 3 ) 3 Cl.sup.⊖, ##STR14##
Claim 19
Dependent Claim
25 words
The aqueous non-foaming fire-extinguishing composition of claim 8, which further contains an inorganic salt selected from the group consisting of sodium hydrogencarbonate and ammonium phosphate.
Claim 20
Dependent Claim
21 words
The aqueous non-foaming fire-extinguishing composition according to claim 8, which consists of the aqueous solvent and the water-soluble high molecular compound.
Claim 21
Independent Claim
139 words
A method for extinguishing cooking oil fires comprising applying to said fire an aqueous non-foaming fire-extinguishing composition adapted for extinguishing cooking oil fires comprising an aqueous solvent and a water-soluble high molecular compound, said water-soluble high molecular compound containing a fluoroalkyl group and one or more water-solubilizable groups per each fluoroalkyl group; having an average molecular weight of not less than 5000 and fluorine content of not less than 15% by weight; being soluble in water in an amount of at least 0.1% by weight at 25° C.; and the surface tension of which is not more than 50 dyn/cm when measured on 0.1 to 5.0% by weight aqueous solution at 25° C.; and the amount of said water-soluble high molecular compound being from 0.1 to 60% by weight on the basis of the weight of said aqueous solvent.
Claim 22
Independent Claim
139 words
A method for extinguishing cooking oil fires comprising applying to said fire an aqueous non-foaming fire-extinguishing composition adapted for extinguishing cooking oil fires comprising an aqueous solvent and a water-soluble high molecular compound, said water-soluble high molecular compound containing a fluoroalkyl group and one or more water-solubilizable groups per each fluoroalkyl group; having an average molecular weight of not less than 5000 and fluorine content of not less than 15% by weight; being soluble in water in an amount of at least 0.1% by weight at 25° C.; and the surface tension of which is not more than 50 dyn/cm when measured on 0.1 to 5.0% by weight aqueous solution at 25° C.; and the amount of said water-soluble high molecular compound being from 0.1 to 60% by weight on the basis of the weight of said aqueous solvent.
Claim 23
Dependent Claim
54 words
The method as recited in claim 19, wherein the water-solubilizable group borne on the water-soluble high molecular compound is one selected from the group consisting of hydroxyl; 2-oxopyrrolidinyl; carboxyl, phosphate, sulfate and sulfo, in a free or salt form; amino in a free or salt form, and polyoxyalkylene in a free or salt form.
Claim 24
Dependent Claim
23 words
The method as recited in claim 19, wherein the average molecular weight of the water-soluble high molecular compound is not less than 10,000.
Claim 25
Dependent Claim
24 words
The method as recited in claim 19, wherein the fluorine content of the water-soluble high molecular compound is not less than 15% by weight.
Claim 26
Dependent Claim
28 words
The method as recited in claim 19, wherein the water-soluble high molecular compound is soluble in water at 25° C. in an amount less than 0.5% by weight.
Claim 27
Dependent Claim
23 words
The method as recited in claim 19, wherein the surface tension of the water-soluble high molecular compound is not more than 40 dyn/cm.
Claim 28
Dependent Claim
24 words
The method as recited in claim 19, wherein the fluoroalkyl group borne on the water-soluble high molecular compound has 4 to 20 carbon atoms.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-06 | 1989-07-08 | 1990-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-06 | 1993-07-08 | 1994-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-06 | 1997-07-08 | 1998-01-07 | $7700.00 | Window Closed / Lapsed |