Patent US4076540A successfully refreshed from Google Patents.
US4076540A
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US
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Fire extinguishing composition
Assignee: Individual
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Filing: 1976-12-09
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Granted: 1978-02-28
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Expires: 1996-12-09
Abstract
Abstract A fire extinguishing composition is disclosed comprising three essential ingredients that reinforce cooperatively the action of each ingredient when applied to an object on fire, (A) an ionic complex containing in an anionic portion thereof complexed nitrogen, phosphorus, oxygen, and aluminum, (B) a boric acid compound such as orthoboric acid, metaboric acid, or boric anhydride, and (C) urea. Flammable objects, particularly objects made of cellulose, are reduced in flammability by being pretreated with the composition disclosed. A new process for preparing the ionic complex ingredient of the fire extinguishing composition is also disclosed.
Inventors
- 👤 Ernest Stossel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:23
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0007; A62D1/0014; C; C09; C09D; C09D5/00; C09D5/18; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
87 words
A fire extinguishing composition comprising (A) an ionic complex containing in an anionic portion of the molecule complexed nitrogen, phosphorus, oxygen, and aluminum, as evidenced by tests for anoinic nitrogen and aluminum, and having a P:N molar ratio of 10:1 to 2:6, a P:Al molar ratio of 1:1 to 100:1, an acid number less than 400, and a pH in a 2% aqueous solution above 2.5; (B) a boric acid compound selected from the group consisting of orthoboric acid, metaboric acid, and boric anhydride, and (C) urea.
Claim 2
Dependent Claim
87 words
A fire extinguishing composition comprising (A) an ionic complex containing in an anionic portion of the molecule complexed nitrogen, phosphorus, oxygen, and aluminum, as evidenced by tests for anoinic nitrogen and aluminum, and having a P:N molar ratio of 10:1 to 2:6, a P:Al molar ratio of 1:1 to 100:1, an acid number less than 400, and a pH in a 2% aqueous solution above 2.5; (B) a boric acid compound selected from the group consisting of orthoboric acid, metaboric acid, and boric anhydride, and (C) urea.
Claim 3
Dependent Claim
27 words
A fire extinguishing composition according to claim 1 comprising 30 to 80 parts by weight of the ionic comples, 3 to 40 parts by weight of urea.
Claim 4
Dependent Claim
39 words
A fire extinguishing composition according to claim 1 having in the inoic complex a P:N molar ratio of 4:1 to 2:4, a P:Al molar ratio of 3.2 to 10:1, and a pH in a 2% aqueous solution above 5.
Claim 5
Dependent Claim
17 words
A fire extinguishing composition according to claim 1 in which the boric acid compound is orthoboric acid.
Claim 6
Dependent Claim
15 words
A fire extinguishing composition comprising an alkali metal bicarbonate and composition according to claim 1.
Claim 7
Dependent Claim
14 words
A liquid fire extinguishing composition comprising water and a composition according to claim 1.
Claim 8
Dependent Claim
14 words
A composition of reduced flammability comprising cellulose and a composition according to claim 1.
Claim 9
Dependent Claim
34 words
A composition according to claim 7 including as an additional ingredient a hydroxyalkylamine having from 2 to about 12 carbon atoms, from 1 to 3 amino groups and from 1 to 4 alcoholic hydroxylgroups.
Claim 10
Dependent Claim
19 words
A wash-resistant composition of reduced flammability comprising cellulose, a polymerizable cross-linking agent, and a composition according to claim 1.
Claim 11
Dependent Claim
32 words
A composition according to claim 8 in which the cross-linking agent is selected from the group consisting of aldehydes, acetals, aldehyde-amine condensation products, xanthydrol compounds, epoxy resin-forming materials, and polymerizable phosphorus compounds.
Claim 12
Dependent Claim
34 words
A composition according to claim 8 in which the quantity of polymerizable cross linking agent is from 1 to 200% by weight of the combined quantities of anionic complex, boric acid compound, and urea.
Claim 13
Dependent Claim
139 words
A process for preparing an ionic complex containing in an anionic portion of the molecule complexed nitrogen, phosphorus, oxygen and aluminum, as evidenced by tests for anionic nitrogen and aluminum, and having a P;N molar ratio of 10:1 to 2:6, a P:Al molar ratio of from 1:1 to 100:1, an acid number less than about 400, and a pH in a 2% solution higher than about 2.5, comprising the steps of concentrating to at least 700 g H 3 PO 4 per liter an aqueous solution containing per liter of solution 120 g to 400 g dissolved H 3 PO 4 and 0.5 g to 30 g dissolved aluminum, adding per liter of concentrate 40 g to 1600 g urea, heating the resulting mixture at 150° to 240° C for 1 to 10000 seconds, and recovering the ionic complex.
Claim 14
Dependent Claim
139 words
A process for preparing an ionic complex containing in an anionic portion of the molecule complexed nitrogen, phosphorus, oxygen and aluminum, as evidenced by tests for anionic nitrogen and aluminum, and having a P;N molar ratio of 10:1 to 2:6, a P:Al molar ratio of from 1:1 to 100:1, an acid number less than about 400, and a pH in a 2% solution higher than about 2.5, comprising the steps of concentrating to at least 700 g H 3 PO 4 per liter an aqueous solution containing per liter of solution 120 g to 400 g dissolved H 3 PO 4 and 0.5 g to 30 g dissolved aluminum, adding per liter of concentrate 40 g to 1600 g urea, heating the resulting mixture at 150° to 240° C for 1 to 10000 seconds, and recovering the ionic complex.
Claim 15
Dependent Claim
16 words
A process according to claim 11 in which impurities are removed before the addition of urea.
Claim 16
Dependent Claim
39 words
A process according to claim 11 including the additional step of adding prior to the addition of urea 10-80 grams/liter of concentrate of an aluminum compound selected from the group consisting of aluminum oxide, aluminum phosphate, and aluminum hydroxide.
Claim 17
Dependent Claim
26 words
A process according to claim 11 including the additional step of adding prior to the addition of urea 50-5000 mg/liter of concentrate of an acid-resistant surfactant.
Claim 18
Dependent Claim
69 words
A friable solid ionic complex having an apparent density not exceeding 450 grams per liter and containing in an anionic portion of the molecule complexed nitrogen, phosphorus, oxygen, and aluminum, as evidenced by tests for anionic nitrogen and aluminum, and having a P:N molar ratio of 4:1 to 2:4, a P:Al molar ratio of from 3:2 to 10:1, and a pH in a 2% aqueous solution greater than 5.
Claim 19
Dependent Claim
69 words
A friable solid ionic complex having an apparent density not exceeding 450 grams per liter and containing in an anionic portion of the molecule complexed nitrogen, phosphorus, oxygen, and aluminum, as evidenced by tests for anionic nitrogen and aluminum, and having a P:N molar ratio of 4:1 to 2:4, a P:Al molar ratio of from 3:2 to 10:1, and a pH in a 2% aqueous solution greater than 5.
Claim 20
Dependent Claim
29 words
An ionic complex according to claim 15 containing 48 to 52% P 2 O 5 , 12.5 to 15% N, and 4.5 to 11.0% Al 2 O 3 .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |