US4174223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant compositions and methods of preparing and using same
Assignee: Individual
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Filing: 1978-06-13
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Granted: 1979-11-13
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Expires: 1998-06-13
Abstract
Abstract Various combustible materials such as paper, wood, leather, cloth and textiles of animal or vegetable origin and, especially, cellulosic materials suitable for insulation may be rendered fire retardant by treating the same with an aqueous solution comprising about 10 to 60 per cent of a blend of ammonium nitrate liquor and urea liquor, this blend can be within a range of 44.5% ammonium nitrate, 35.4% urea, and 20.3% water to 39.5% ammonium nitrate, 30.5% urea, and 30% water; about 10 to 50 per cent of an ammoniated poly phosphate having approximately 10 per cent nitrogen and approximately 34 per cent phosphoric acid; about 0 to 25 per cent molasses, starch or sugar or mixtures thereof; and up to about 3 per cent of a strong base such as sodium hydroxide.
Inventors
- 👤 Donald M. Steen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:49
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/34; C; C09; C09K; C09K21/00; C09K21/02; C09K21/04; D06; D06M; D06M11/00; D06M11/58; D06M11/64; D06M11/65; D06M13/00; D06M13/322; D06M13/402; D06M13/432; D21H17/00; D21H17/03; D21H17/05; D21H17/07; D21H5/00; D21H5/0002; B; B27; B27K; B27K2200/00; B27K2200/10; B27K3/00; B27K3/16; B27K3/32; B27K3/52
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
92 words
An aqueous composition useful as a flame retardant and consisting essentially of (a) from about 10 to 60 percent by weight of a blend of an aqueous ammonium nitrate liquor and an aqueous urea liquor compounded so that the blend contains approximately 40-60% of the total nitrogen from each of said ammonium nitrate and urea and a total of about 28 to 32 percent nitrogen, and (b) from about 10 to about 50 percent of an aqueous ammoniated poly phosphate solution containing about 8-12 percent nitrogen and about 30-40 percent phosphoric acid.
Claim 2
Dependent Claim
92 words
An aqueous composition useful as a flame retardant and consisting essentially of (a) from about 10 to 60 percent by weight of a blend of an aqueous ammonium nitrate liquor and an aqueous urea liquor compounded so that the blend contains approximately 40-60% of the total nitrogen from each of said ammonium nitrate and urea and a total of about 28 to 32 percent nitrogen, and (b) from about 10 to about 50 percent of an aqueous ammoniated poly phosphate solution containing about 8-12 percent nitrogen and about 30-40 percent phosphoric acid.
Claim 3
Dependent Claim
30 words
The composition of claim 1 further consisting essentially of from about 0 to 25 percent of a member selected from the group consisting of molasses, starch, sugar and mixtures thereof.
Claim 4
Dependent Claim
26 words
The composition of claim 1 further consisting essentially of a strong base in an amount sufficient to raise the pH of the composition to about 6-8.
Claim 5
Dependent Claim
26 words
The composition of claim 2 further consisting essentially of a strong base in an amount sufficient to raise the pH of the composition to about 6-8.
Claim 6
Independent Claim
108 words
The method of producing a flame retardant cellulose insulation material comprising the steps of mixing together a cellulose insulation material and a flame retardant composition consisting essentially of (a) from about 10 to 60 percent by weight of a blend of an aqueous ammonium nitrate liquor and an aqueous urea liquor compounded so that the blend contains approximately 40-60% of the total nitrogen from each of said ammonium nitrate and urea and a total of about 28 to 32 percent nitrogen, and (b) from about 10 to about 50 percent of an aqueous ammoniated poly phosphate solution containing about 8-12 percent nitrogen and about 30-40 percent phosphoric acid.
Claim 7
Independent Claim
108 words
The method of producing a flame retardant cellulose insulation material comprising the steps of mixing together a cellulose insulation material and a flame retardant composition consisting essentially of (a) from about 10 to 60 percent by weight of a blend of an aqueous ammonium nitrate liquor and an aqueous urea liquor compounded so that the blend contains approximately 40-60% of the total nitrogen from each of said ammonium nitrate and urea and a total of about 28 to 32 percent nitrogen, and (b) from about 10 to about 50 percent of an aqueous ammoniated poly phosphate solution containing about 8-12 percent nitrogen and about 30-40 percent phosphoric acid.
Claim 8
Dependent Claim
35 words
The method of claim 5 where said flame retardant composition further consists essentially of from about 0 to 25 percent of a member selected from the group consisting of molasses, starch, sugar and mixtures thereof.
Claim 9
Dependent Claim
31 words
The method of claim 5 wherein the flame retardant composition further consists essentially of a strong base in an amount sufficient to raise the pH of the composition to about 6-8.
Claim 10
Dependent Claim
137 words
A flame retardant insulation material formed by the mixing of constituents comprising (a) a cellulose material selected from the group consisting of ground newsprint, shredded wood fiber, straw, cotton batting or mixtures thereof and (b) a flame retardant composition consisting essentially of (i) from about 10 to 60 percent by weight of a blend of an aqueous ammonium nitrate liquor and an aqueous urea liquor compounded so that the blend contains approximately 40-60 percent of the total nitrogen from each of said ammonium nitrate and urea and a total of about 28 to 32 percent nitrogen, and (ii) from about 10 to about 50 percent of an aqueous ammoniated poly phosphate solution containing about 8-12 percent nitrogen and about 30-40 percent phosphoric acid, said flame retardant comprising about 10 to about 40 percent of the total mixture.
Claim 11
Dependent Claim
137 words
A flame retardant insulation material formed by the mixing of constituents comprising (a) a cellulose material selected from the group consisting of ground newsprint, shredded wood fiber, straw, cotton batting or mixtures thereof and (b) a flame retardant composition consisting essentially of (i) from about 10 to 60 percent by weight of a blend of an aqueous ammonium nitrate liquor and an aqueous urea liquor compounded so that the blend contains approximately 40-60 percent of the total nitrogen from each of said ammonium nitrate and urea and a total of about 28 to 32 percent nitrogen, and (ii) from about 10 to about 50 percent of an aqueous ammoniated poly phosphate solution containing about 8-12 percent nitrogen and about 30-40 percent phosphoric acid, said flame retardant comprising about 10 to about 40 percent of the total mixture.
Claim 12
Dependent Claim
35 words
The insulation material of claim 8, wherein said flame retardant further consists essentially of from about 0 to 25 percent of a member selected from the group consisting of molasses, starch, sugar and mixtures thereof.
Claim 13
Dependent Claim
31 words
The insulation material of claim 8, wherein said flame retardant further consists essentially of a strong base in an amount sufficient to raise the pH of the composition to about 6-8.
Claim 14
Dependent Claim
31 words
The insulation material of claim 9, wherein said flame retardant further consists essentially of a strong base in an amount sufficient to raise the pH of the composition to about 6-8.
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) | 1982-11-12 | 1983-05-14 | 1983-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-12 | 1987-05-14 | 1987-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-12 | 1991-05-14 | 1991-11-13 | $7700.00 | Window Closed / Lapsed |