US3961024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluoro compound production
Assignee: Honeywell International Inc
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Filing: 1963-06-18
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Granted: 1976-06-01
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Expires: 1983-06-18
Abstract
Abstract 1. The process for cleaving substituted ammonia compounds containing nitrogen-hydrogen bonds selected from the group consisting of alkali metal amides, urea, biuret, sulfamide, formamide, hydrazine, ethylenediamine, cyanoguanidine and melamine and fluorinating the resulting cleavage products, which comprises in combination the steps of: A. introducing into a reaction zone one or more of the afore-mentioned substituted ammonia compounds as starting material and a fluoride catalyst, said fluoride catalyst being a fluoride of a metal which forms an acid salt with hydrogen fluoride, B. subjecting said starting material to the action of elemental fluorine while in the presence of said catalyst, C. maintaining temperatures in the reaction zone substantially in the range of 0°-300°C. but not above the phase change temperature of the starting material if a liquid, or not above the decomposition temperature of the starting material if a solid, and D. collecting from the reaction zone the volatile off-gases containing fluorinated cleavage products.
Inventors
- 👤 Richard K. Vitek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:19
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/083; C01B21/0832; C01B21/0835
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
152 words
The process for cleaving substituted ammonia compounds containing nitrogen-hydrogen bonds selected from the group consisting of alkali metal amides, urea, biuret, sulfamide, formamide, hydrazine, ethylenediamine, cyanoguanidine and melamine and fluorinating the resulting cleavage products, which comprises in combination the steps of: a. introducing into a reaction zone one or more of the aforementioned substituted ammonia compounds as starting material and a fluoride catalyst, said fluoride catalyst being a fluoride of a metal which forms an acid salt with hydrogen fluoride, b. subjecting said starting material to the action of elemental fluorine while in the presence of said catalyst, c. maintaining temperatures in the reaction zone substantially in the range of 0°-300°C. but not above the phase change temperature of the starting material if a liquid, or not above the decomposition temperature of the starting material if a solid, and d. collecting from the reaction zone the volatile off-gases containing fluorinated cleavage products.
Claim 2
Dependent Claim
152 words
The process for cleaving substituted ammonia compounds containing nitrogen-hydrogen bonds selected from the group consisting of alkali metal amides, urea, biuret, sulfamide, formamide, hydrazine, ethylenediamine, cyanoguanidine and melamine and fluorinating the resulting cleavage products, which comprises in combination the steps of: a. introducing into a reaction zone one or more of the aforementioned substituted ammonia compounds as starting material and a fluoride catalyst, said fluoride catalyst being a fluoride of a metal which forms an acid salt with hydrogen fluoride, b. subjecting said starting material to the action of elemental fluorine while in the presence of said catalyst, c. maintaining temperatures in the reaction zone substantially in the range of 0°-300°C. but not above the phase change temperature of the starting material if a liquid, or not above the decomposition temperature of the starting material if a solid, and d. collecting from the reaction zone the volatile off-gases containing fluorinated cleavage products.
Claim 3
Dependent Claim
40 words
The process of claim 1 in which a. the starting material is cyanoguanidine, b. reaction temperatures are maintained substantially in the range of 0°-200°C. and c. in which there are collected from the reaction zone the volatile off-gases containing pentafluoromethylamine.
Claim 4
Dependent Claim
20 words
The process of claim 2 in which the fluoride catalyst introduced into the reaction zone is an alkali metal fluoride.
Claim 5
Dependent Claim
31 words
The process of claim 2 in which the metal fluoride catalyst introduced into the reaction zone is a bifluoride of an alkali metal of the group consisting of lithium and sodium.
Claim 6
Dependent Claim
163 words
The process for cleaving substituted ammonia compounds containing nitrogen-hydrogen bonds selected from the group consisting of alkali metal amides, urea, biuret, sulfamide, formamide, hydrazine, ethylenediamine and melamine and fluorinating the resulting cleavage products, which comprises in combination the steps of: a. introducing into a reaction zone one or more of the afore-mentioned substituted ammonia compounds as starting material and a fluoride catalyst, said fluoride catalyst being a fluoride of a metal which forms an acid salt with hydrogen fluoride, b. subjecting said starting material to the action of elemental fluorine while in the presence of said catalyst, c. maintaining temperatures in the reaction zone substantially in the range of 0°-300°C. but not above the phase change temperature of the starting material if a liquid, or not above the decomposition temperature of the starting material if a solid, to effect cleavage of the starting material and fluorination of the cleavage products and d. collecting from the reaction zone the volatile off-gases containing nitrogen trifluoride.
Claim 7
Dependent Claim
163 words
The process for cleaving substituted ammonia compounds containing nitrogen-hydrogen bonds selected from the group consisting of alkali metal amides, urea, biuret, sulfamide, formamide, hydrazine, ethylenediamine and melamine and fluorinating the resulting cleavage products, which comprises in combination the steps of: a. introducing into a reaction zone one or more of the afore-mentioned substituted ammonia compounds as starting material and a fluoride catalyst, said fluoride catalyst being a fluoride of a metal which forms an acid salt with hydrogen fluoride, b. subjecting said starting material to the action of elemental fluorine while in the presence of said catalyst, c. maintaining temperatures in the reaction zone substantially in the range of 0°-300°C. but not above the phase change temperature of the starting material if a liquid, or not above the decomposition temperature of the starting material if a solid, to effect cleavage of the starting material and fluorination of the cleavage products and d. collecting from the reaction zone the volatile off-gases containing nitrogen trifluoride.
Claim 8
Dependent Claim
21 words
The process of claim 5 in which the metal fluoride catalyst introduced into the reaction zone is an alkali metal fluoride.
Claim 9
Dependent Claim
19 words
The process of claim 5 in which the metal fluoride catalyst introduced into the reaction zone is a bifluoride.
Claim 10
Dependent Claim
31 words
The process of claim 5 in which the metal fluoride catalyst introduced into the reaction zone is a fluoride of an alkali metal of the group consisting of lithium and sodium.
Claim 11
Dependent Claim
62 words
The process of claim 5 in which a. the metal fluoride catalyst is a bifluoride of an alkali metal of the group consisting of lithium and sodium, b. the temperatures in the reaction zone are maintained substantially in the range of 0°-200°C. and c. in which the fluorine as charged is diluted with no more than an equal volume of inert gas.
Claim 12
Dependent Claim
13 words
The process of claim 5 in which the starting material is lithium amide.
Claim 13
Dependent Claim
12 words
The process of claim 5 in which the starting material is urea.
Claim 14
Dependent Claim
12 words
The process of claim 5 in which the starting material is biuret.
Claim 15
Dependent Claim
12 words
The process of claim 5 in which the starting material is sulfamide.
Claim 16
Dependent Claim
12 words
The process of claim 5 in which the starting material is hydrazine.
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) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |