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US4328318A
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Glasses containing fluorine, their preparation and their application
Assignee: Bpifrance Financement SA
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Filing: 1980-03-20
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Granted: 1982-05-04
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Expires: 2000-03-20
Abstract
Abstract Glasses containing fluorine. These glasses are characterized by the fact that they contain at least 25% in moles, approximately, of a fluoride or a mixture of fluorides MX(X1)2, in which: X and X1 each represent a fluorine atom, and M then represents a metal chosen from among the group consisting of gallium, iron, chromium, vanadium, indium, and the rare earths, or X represents an oxygen atom, X1 represents a fluorine atom, and M then represents a titanium atom, it being understood that the said glasses contain no hydrofluoric acid as a network former and that, in the case in which M represents a gallium or indium atom, the glasses do not contain more than 15% in moles of BaPO3F. Application notably in obtaining glasses containing various cations conferring particular optical or magneto-optical properties.
Inventors
- 👤 Jean-Pierre Miranday
- 👤 Charles Jacoboni
- 👤 Robert de Pape
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:52
CPC Classifications
C; C03; C03C; C03C13/00; C03C13/04; C03C13/048; C03C1/00; C03C1/10; C03C13/041; C03C13/042; C03C3/00; C03C3/12; C03C3/23; C03C3/32; C03C3/325; C03C4/00; C03C4/10; C03C4/12; C03C8/00; C03C8/02; C03C8/06; C03C2207/00; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/903; Y10S501/904
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
164 words
Glasses containing fluorine characterized by the fact that they contain (1) at least 25% of a fluoride or a mixture of fluorides having the formula MX(X 1 ) 2 as a network former in which (a) X and X 1 each represent a fluorine atom and M represents a metal chosen from the group consisting of gallium, iron, chromium, vanadium, indium, and the rare earths, or (b) X represents an oxygen atom, X 1 represents a fluorine atom, and M represents a titanium atom, said glasses being devoid of hydrofluoric acid and (2) at least one fluoride having the formula M II F 2 , M II being a devalent metal chosen from the group consisting of lead, barium, calcium, cadmium, and strontium, said at least one fluoride being present in an amount up to 75% in moles, said glasses containing no more than 5% in moles of alkaline-earth fluorophosphates and no more than 10% in moles of ZrF 4 and/or HfF 4 .
Claim 2
Dependent Claim
164 words
Glasses containing fluorine characterized by the fact that they contain (1) at least 25% of a fluoride or a mixture of fluorides having the formula MX(X 1 ) 2 as a network former in which (a) X and X 1 each represent a fluorine atom and M represents a metal chosen from the group consisting of gallium, iron, chromium, vanadium, indium, and the rare earths, or (b) X represents an oxygen atom, X 1 represents a fluorine atom, and M represents a titanium atom, said glasses being devoid of hydrofluoric acid and (2) at least one fluoride having the formula M II F 2 , M II being a devalent metal chosen from the group consisting of lead, barium, calcium, cadmium, and strontium, said at least one fluoride being present in an amount up to 75% in moles, said glasses containing no more than 5% in moles of alkaline-earth fluorophosphates and no more than 10% in moles of ZrF 4 and/or HfF 4 .
Claim 3
Dependent Claim
28 words
Glasses according to claim 1 which include at least one fluoride of a rare earth selected from the group consisting of neodymium, gadolinium, europium, holmium, praesodymium and erbium.
Claim 4
Dependent Claim
24 words
Glasses according to claim 2 which also contain at least one fluoride of the formula MtF 2 , Mt being a 3d transition metal.
Claim 5
Dependent Claim
24 words
Glasses according to claim 1 which also contain at least one fluoride of the formula MtF 2 , Mt being a 3d transition metal.
Claim 6
Dependent Claim
22 words
Glasses according to claim 4 wherein Mt is selected from the group consisting of cobalt, copper, manganese, iron, nickel, chromium, and zinc.
Claim 7
Dependent Claim
26 words
Glasses according to claim 4 which contain up to 40% in moles of a fluoride or a mixture of fluorides of the formula MtF 2 .
Claim 8
Dependent Claim
34 words
Glasses according to either claim 1 or 3 which contain at least one fluoride of the formula M I F, M I being chosen from the group consisting of the alkaline metals and silver.
Claim 9
Dependent Claim
23 words
Glasses according to claim 7 which contain up to 50% in moles of a fluoride or a mixture of fluorides M I F.
Claim 10
Dependent Claim
43 words
Glasses according to claim 1 which contain as adjuvants up to 10% in moles of halides, other than fluorides, of the M I metals selected from the group consisting of alkaline metals and silver or M II metals as defined in claim 28.
Claim 11
Dependent Claim
15 words
Glasses according to claim 9 which contain up to 10% in moles of aluminum trifluoride.
Claim 12
Dependent Claim
10 words
Glasses according to claim 9 which contain no aluminum trifluoride.
Claim 13
Dependent Claim
18 words
Glasses according to any one of claims 9-11 which contain up to 22% in moles of bismuth trifluoride.
Claim 14
Dependent Claim
12 words
Glasses according to claim 9 wherein said halide is PbCl 2 .
Claim 15
Dependent Claim
43 words
Glasses according to claim 1 which contain 25 to 30% in moles of a fluoride or a mixture of fluorides MX(X 1 ) 2 the rest consisting of a fluoride or a mixture of fluorides of the formula M II F 2 .
Claim 16
Dependent Claim
40 words
Glasses according to claim 1 which contain 48 to 55% in moles of a fluoride or a mixture of fluorides MX(X 1 ) 2 the rest consisting of a fluoride or a mixture of fluorides M II F 2 .
Claim 17
Dependent Claim
76 words
Glasses according to claims 4, 5, or 3 which contain 25 to 50% in moles of a fluoride or a mixture of fluorides MX(X 1 ) 2 , 20 to 60% in moles of a fluoride or a mixture of fluorides M II F 2 , the rest consisting of a fluoride or a mixture of fluorides having the formula MtF 2 , this latter being present in an amount of less than 40% in moles.
Claim 18
Dependent Claim
56 words
Glasses according to claim 7 which contain 37 to 50% in moles of a fluoride or a mixture of fluorides MX(X 1 ) 2 10 to 55% in moles of a fluoride or a mixture of fluorides M II F 2 , the rest consisting of a fluoride or a mixture of fluorides M I F.
Claim 19
Dependent Claim
80 words
Glasses according to claim 7 which contain 25 to 50% in moles of a fluoride or a mixture of fluorides MX(X 1 ) 2 , 10 to 60% of a fluoride or a mixture of fluorides M II F 2 , up to 50% in moles of a fluoride or a mixture of fluorides M I F the rest consisting of a fluoride or a mixture of fluorides MtF 2 present at the amount of up to 40% in moles.
Claim 20
Dependent Claim
24 words
Glasses according to claim 1 wherein M represents a metal chosen from the group consisting of iron, chromium, vanadium, the rare earths, and titanium.
Claim 21
Dependent Claim
12 words
Glasses according to claim 1 which are free of alkaline earth fluorophosphates.
Claim 22
Dependent Claim
16 words
Glasses according to claim 1 which do not contain any ZrF 4 or HfF 4 .
Claim 23
Dependent Claim
15 words
Glasses according to claim 1 which do not contain any beryllium fluoride or magnesium fluoride.
Claim 24
Dependent Claim
11 words
Glasses according to claim 1 which do not contain any fluorophosphates.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1985-05-03 | 1985-11-02 | 1986-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-03 | 1989-11-02 | 1990-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-03 | 1993-11-02 | 1994-05-04 | $7700.00 | Window Closed / Lapsed |