US4711652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing halide glass, especially for optical communications
Assignee: Telecom Italia SpA
•
Filing: 1986-03-17
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Granted: 1987-12-08
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Expires: 2006-03-17
Abstract
Abstract The process for manufacturing halide glasses uses a reaction between organometallic and inter-halide or halide-derived compounds, started at a temperature ranging from the highest melting temperature and the lowest boiling temperature of the compounds used.
Inventors
- 👤 Giacomo Roba
- 👤 Eros Modone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:23
CPC Classifications
C; C01; C01B; C01B9/00; C01B9/02; C01B9/08; C01F; C01F7/00; C01F7/48; C01F7/50; C01F7/56; C01F7/58; C01G; C01G19/00; C01G19/04; C01G21/00; C01G21/16; C03; C03C; C03C3/00; C03C3/32; C03C3/325; Y; Y10; Y10S; Y10S65/00; Y10S65/15; Y10S65/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
115 words
A process for manufacturing a halide glass which comprises the steps of: reacting an organometallic compound selected from the group which consists of: (CH.sub.3).sub.3 Al, (C.sub.2 H.sub.5).sub.3 Al, (CH.sub.3).sub.2 AlCl, (C.sub.2 H.sub.5)Sn, (C.sub.2 H.sub.5).sub.2 AlCl, (CH.sub.3).sub.4 Pb and (C.sub.2 H.sub.5).sub.4 Pb; with an interhalide or halide-derived compound selected from the group which consists of: CHCl.sub.3, C.sub.7 F.sub.14, C.sub.6 H.sub.5 F, C.sub.6 H.sub.11 F, ClCH.sub.2 CH.sub.2 Cl, CH.sub.2 Cl.sub.2, CH.sub.3 CHCl.sub.2, IF.sub.5, ICl.sub.3, and ICl, in liquid phase, in amounts and at a temperature at which a glass-forming solid salt is precipitated and all remaining elements of the reacted compounds are volatilized as reaction products; and vitrifying said glass-forming solid salt to form a glass article.
Claim 2
Dependent Claim
115 words
A process for manufacturing a halide glass which comprises the steps of: reacting an organometallic compound selected from the group which consists of: (CH.sub.3).sub.3 Al, (C.sub.2 H.sub.5).sub.3 Al, (CH.sub.3).sub.2 AlCl, (C.sub.2 H.sub.5)Sn, (C.sub.2 H.sub.5).sub.2 AlCl, (CH.sub.3).sub.4 Pb and (C.sub.2 H.sub.5).sub.4 Pb; with an interhalide or halide-derived compound selected from the group which consists of: CHCl.sub.3, C.sub.7 F.sub.14, C.sub.6 H.sub.5 F, C.sub.6 H.sub.11 F, ClCH.sub.2 CH.sub.2 Cl, CH.sub.2 Cl.sub.2, CH.sub.3 CHCl.sub.2, IF.sub.5, ICl.sub.3, and ICl, in liquid phase, in amounts and at a temperature at which a glass-forming solid salt is precipitated and all remaining elements of the reacted compounds are volatilized as reaction products; and vitrifying said glass-forming solid salt to form a glass article.
Claim 3
Dependent Claim
29 words
The process defined in claim 1 wherein the reaction is effected at a temperature comprised between the highest melting temperature and the lowest boiling temperature of the compounds used.
Claim 4
Dependent Claim
19 words
The process defined in claim 2 wherein the reaction is effected at a temperature lower than the glass-forming temperature.
Claim 5
Dependent Claim
38 words
The process defined in claim 1 wherein the halide-derived compound is employed and is selected from the group which consists of: CHCl.sub.3, C.sub.7 F.sub.14, C.sub.6 H.sub.5 F, C.sub.6 H.sub.11 F, ClCH.sub.2 CH.sub.2 Cl, CH.sub.2 Cl.sub.2, and CH.sub.3 CHCl.sub.2.
Claim 6
Dependent Claim
25 words
The process defined in claim 1 wherein the interhalide compound is employed and is selected from the group which consists of: IF.sub.5, ICl.sub.3, and ICl.
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) | 1990-12-07 | 1991-06-08 | 1991-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-07 | 1995-06-08 | 1995-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-07 | 1999-06-08 | 1999-12-08 | $7700.00 | Window Closed / Lapsed |