US4101485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Durable fire retardant for forest and rangelands
Assignee: Monsanto Co
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Filing: 1976-05-28
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Granted: 1978-07-18
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Expires: 1996-05-28
Abstract
Abstract A concentrated ammonium salt composition containing a binder and viscosity control agent usable in aqueous dispersion. The dispersion is applied to foliage and vegetation to hinder or prevent wildfires for one complete season.
Inventors
- 👤 Donald L. Brooks
- 👤 Michael L. Losee
- 👤 Harry Teicher
- 👤 Charles R. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:55
CPC Classifications
C; C09; C09K; C09K21/00; C09K21/02; A; A62; A62C; A62C3/00; A62C3/02; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
156 words
A concentrated ammonium salt composition suitable for use in the manufacture of aqueous weather-durable fire retardants which comprises: (a) From about 20 to 70 percent by weight of an ammonium salt selected from the group consisting of monoammonium orthophosphate, diammonium orthophosphate, monoammonium-alkali metal mixed orthophosphates, diammonium-alkali metal mixed orthophosphates, ammonium-alkaline earth metal mixed orthophosphates, ammonium sulfate, substantially water-insoluble ammonium polyphosphates, and mixtures thereof, wherein said ammonium polyphosphates are represented by the formula H.sub.(n-m)+2 (NH.sub.4).sub.m P.sub.n O.sub.3n+1 wherein n is an integer having an average value from 20 to about 400, m/n has an average value between about 0.7 and about 1.1, and m has a maximum value equal to n+2; (b) from about 20 to 70 percent by weight of a reactive, water-soluble binder which insolubilizes upon drying; and (c) from about 1 to 10 percent by weight of a water-dispersible, viscosity control agent which imparts thixotropic flow properties to an aqueous dispersion of said composition.
Claim 2
Dependent Claim
156 words
A concentrated ammonium salt composition suitable for use in the manufacture of aqueous weather-durable fire retardants which comprises: (a) From about 20 to 70 percent by weight of an ammonium salt selected from the group consisting of monoammonium orthophosphate, diammonium orthophosphate, monoammonium-alkali metal mixed orthophosphates, diammonium-alkali metal mixed orthophosphates, ammonium-alkaline earth metal mixed orthophosphates, ammonium sulfate, substantially water-insoluble ammonium polyphosphates, and mixtures thereof, wherein said ammonium polyphosphates are represented by the formula H.sub.(n-m)+2 (NH.sub.4).sub.m P.sub.n O.sub.3n+1 wherein n is an integer having an average value from 20 to about 400, m/n has an average value between about 0.7 and about 1.1, and m has a maximum value equal to n+2; (b) from about 20 to 70 percent by weight of a reactive, water-soluble binder which insolubilizes upon drying; and (c) from about 1 to 10 percent by weight of a water-dispersible, viscosity control agent which imparts thixotropic flow properties to an aqueous dispersion of said composition.
Claim 3
Dependent Claim
140 words
A concentrated ammonium salt composition suitable for use in the manufacture of aqueous weather-durable fire retardants which comprises: (a) From about 30 to 60 percent by weight of an ammonium salt selected from the group consisting of monoammonium orthophosphate, diammonium orthophosphate, monoammonium-alkali metal mixed orthophosphates, diammonium-alkali metal mixed orthophosphates, ammonium-alkaline earth metal mixed orthophosphates, ammonium sulfate, substantially water-insoluble ammonium polyphosphates, and mixtures thereof, wherein said ammonium polyphosphates are represented by the formula H.sub.(n-m)+2 (NH.sub.4).sub.m P.sub.n O.sub.3n+1 wherein n is an integer having an average value from 20 to about 400, m/n has an averge value between about 0.7 and about 1.1, and m has a maximum value equal to n+2; (b) from about 30 to 60 percent by weight of a melamine resin binder; and (c) from about 2 to 6 percent by weight of a cross-linked olefin-maleic anhydride interpolymer.
Claim 4
Dependent Claim
140 words
A concentrated ammonium salt composition suitable for use in the manufacture of aqueous weather-durable fire retardants which comprises: (a) From about 30 to 60 percent by weight of an ammonium salt selected from the group consisting of monoammonium orthophosphate, diammonium orthophosphate, monoammonium-alkali metal mixed orthophosphates, diammonium-alkali metal mixed orthophosphates, ammonium-alkaline earth metal mixed orthophosphates, ammonium sulfate, substantially water-insoluble ammonium polyphosphates, and mixtures thereof, wherein said ammonium polyphosphates are represented by the formula H.sub.(n-m)+2 (NH.sub.4).sub.m P.sub.n O.sub.3n+1 wherein n is an integer having an average value from 20 to about 400, m/n has an averge value between about 0.7 and about 1.1, and m has a maximum value equal to n+2; (b) from about 30 to 60 percent by weight of a melamine resin binder; and (c) from about 2 to 6 percent by weight of a cross-linked olefin-maleic anhydride interpolymer.
Claim 5
Dependent Claim
24 words
A composition of claim 2 wherein the ammonium salt is diammonium orthophosphate, ammonium polyphosphate, or a mixture thereof, and the interpolymer is ethylene-maleic anhydride.
Claim 6
Dependent Claim
138 words
A weather-durable fire retardant composition which comprises an aqueous dispersion of (a) An ammonium salt selected from the group consisting of monoammonium orthophosphate, diammonium orthophosphate, monoammonium-alkali metal mixed orthophosphates, diammonium-alkali metal mixed orthophosphates, ammonium-alkaline earth metal mixed orthophosphates, ammonium sulfate, substantially water-insoluble ammonium polyphosphates, and mixtures thereof, wherein said ammonium polyphosphates are represented by the formula H.sub.(n-m)+2 (NH.sub.4).sub.m P.sub.n O.sub.3n+1 wherein n is an integer having an average value from 20 to about 400, m/n has an average value between about 0.7 and about 1.1, and m has a maximum value equal to n+2. (b) a reactive, water-soluble binder which insolubilizes upon drying; and (c) a water-dispersible, viscosity control agent which imparts thixotropic flow properties to an aqueous dispersion, wherein (a), (b) and (c) together comprise from about 5 to 40 percent by weight of said aqueous dispersion.
Claim 7
Dependent Claim
138 words
A weather-durable fire retardant composition which comprises an aqueous dispersion of (a) An ammonium salt selected from the group consisting of monoammonium orthophosphate, diammonium orthophosphate, monoammonium-alkali metal mixed orthophosphates, diammonium-alkali metal mixed orthophosphates, ammonium-alkaline earth metal mixed orthophosphates, ammonium sulfate, substantially water-insoluble ammonium polyphosphates, and mixtures thereof, wherein said ammonium polyphosphates are represented by the formula H.sub.(n-m)+2 (NH.sub.4).sub.m P.sub.n O.sub.3n+1 wherein n is an integer having an average value from 20 to about 400, m/n has an average value between about 0.7 and about 1.1, and m has a maximum value equal to n+2. (b) a reactive, water-soluble binder which insolubilizes upon drying; and (c) a water-dispersible, viscosity control agent which imparts thixotropic flow properties to an aqueous dispersion, wherein (a), (b) and (c) together comprise from about 5 to 40 percent by weight of said aqueous dispersion.
Claim 8
Dependent Claim
142 words
An aqueous weather-durable fire retardant composition which comprises: (a) From about 2 to 20 percent by weight of an ammonium salt selected from the group consisting of monoammonium orthophosphate, diammonium orthophosphate, monoammonium-alkali metal mixed orthophosphates, diammonium-alkali metal mixed orthophosphates, ammonium-alkaline earth metal mixed orthophosphates, ammonium sulfate, substantially water-insoluble ammonium polyphosphates, and mixtures thereof, wherein said ammonium polyphosphates are represented by the formula H.sub.(n-m)+2 (NH.sub.4).sub.m P.sub.n O.sub.3n+1 wherein n is an integer having an average value from 20 to about 400, m/n has an average value between about 0.7 and about 1.1, and m has a maximum value equal to n+2; (b) from about 2 to 20 percent by weight of a reactive, water-soluble binder which insolubilizes upon drying; and (c) from about 0.1 to 5 percent by weight of a water-dispersible viscosity control agent which imparts thixotropic flow properties to said composition.
Claim 9
Dependent Claim
142 words
An aqueous weather-durable fire retardant composition which comprises: (a) From about 2 to 20 percent by weight of an ammonium salt selected from the group consisting of monoammonium orthophosphate, diammonium orthophosphate, monoammonium-alkali metal mixed orthophosphates, diammonium-alkali metal mixed orthophosphates, ammonium-alkaline earth metal mixed orthophosphates, ammonium sulfate, substantially water-insoluble ammonium polyphosphates, and mixtures thereof, wherein said ammonium polyphosphates are represented by the formula H.sub.(n-m)+2 (NH.sub.4).sub.m P.sub.n O.sub.3n+1 wherein n is an integer having an average value from 20 to about 400, m/n has an average value between about 0.7 and about 1.1, and m has a maximum value equal to n+2; (b) from about 2 to 20 percent by weight of a reactive, water-soluble binder which insolubilizes upon drying; and (c) from about 0.1 to 5 percent by weight of a water-dispersible viscosity control agent which imparts thixotropic flow properties to said composition.
Claim 10
Dependent Claim
40 words
An aqueous composition of claim 5 wherein the ammonium salt is diammonium orthophosphate, ammonium polyphosphate, or a mixture thereof; the binder is a melamine resin; and the viscosity control agent is a cross-linked C 2 -C 4 olefin-maleic anhydride interpolymer.
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) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |