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US4034070A
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Process for preparing anhydrous metal fluorides
Assignee: Olin Corp
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Filing: 1976-09-22
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Granted: 1977-07-05
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Expires: 1996-09-22
Abstract
Abstract A process for preparing anhydrous metal fluorides is described wherein metal is reacted with HF and halogen in the presence of a nitrile.
Inventors
- 👤 John A. Wojtowicz
- 👤 David F. Gavin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:57
CPC Classifications
C; C01; C01B; C01B9/00; C01B9/08; C01G; C01G1/00; C01G1/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
69 words
A process for preparing anhydrous metal fluoride which comprises reacting, in the presence of a nitrile having 2-4 carbon atoms, a metal with HF and halogen, both in substantially anhydrous form, said halogen being selected from the group consisting of chlorine, bromine, iodine and a mixture thereof, the reaction being carried out using, per every gram-equivalent of metal, about 0.1-50 gram-moles of HF and about 0.05-25 gram-moles of halogen.
Claim 2
Dependent Claim
69 words
A process for preparing anhydrous metal fluoride which comprises reacting, in the presence of a nitrile having 2-4 carbon atoms, a metal with HF and halogen, both in substantially anhydrous form, said halogen being selected from the group consisting of chlorine, bromine, iodine and a mixture thereof, the reaction being carried out using, per every gram-equivalent of metal, about 0.1-50 gram-moles of HF and about 0.05-25 gram-moles of halogen.
Claim 3
Dependent Claim
10 words
The process of claim 1 wherein said nitrile is acetonitrile.
Claim 4
Dependent Claim
10 words
The process of claim 1 wherein said halogen is chlorine.
Claim 5
Dependent Claim
15 words
The process of claim 3 wherein said nitrile is acetonitrile, propionitrile or a mixture thereof.
Claim 6
Dependent Claim
34 words
The process of claim 4 wherein said nitrile is employed in a proportion that is equal to from about 1 to about 99.9 percent of the combined weight of said nitrile and said HF.
Claim 7
Dependent Claim
28 words
The process of claim 5 wherein per every gram-mole of said metal there are employed about 1-10 gram-moles of said HF and about 0.5-5 gram-moles of said chlorine.
Claim 8
Dependent Claim
25 words
The process of claim 6 wherein said metal is selected from the group consisting of a transition metal, magnesium, gallium, tin, antimony, lead and bismuth.
Claim 9
Dependent Claim
21 words
The process of claim 7 wherein each of said HF and chlorine contains less than 1 percent by weight of water.
Claim 10
Dependent Claim
26 words
The process of claim 8 wherein the proportion of said nitrile is from about 5 to about 75 percent of its combined weight with said HF.
Claim 11
Dependent Claim
10 words
The process of claim 9 wherein said nitrile is acetonitrile.
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) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |