Patent US4584208A successfully refreshed from Google Patents.
US4584208A
Expired / Lapsed
US
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Process for coating glass
Assignee: Pilkington Group Ltd
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Filing: 1985-03-26
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Granted: 1986-04-22
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Expires: 2005-03-26
Abstract
Abstract Solid tin (IV) compounds, free from carbon-tin bonds, and containing both chlorine and fluorine are used to apply infra red reflecting fluorine containing tin oxide coatings to glass. Examples of the tin compounds that may be used are ammonium hexahalostannates of the formula (NH 4 ) 2 SnHal 6 wherein Hal represents halogen, and a minor atomic proportion of the halogen present is fluorine and the balance is chlorine. The tin compounds are dispersed in finely divided form in a carrier gas, and the suspension of the tin compound in the carrier gas is directed on to a hot glass surface to be coated.
Inventors
- 👤 Edward Hargreaves
- 👤 Joseph E. Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:04
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/06; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/211; C03C2218/00; C03C2218/10; C03C2218/17
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
69 words
A process for applying an infra red reflecting fluorine containing tin oxide coating to glass comprising directing on to a hot glass surface at a temperature of 400° to 750° C. a suspension in a carrier gas of a finely divided solid inorganic tin (IV) compound free from carbon-tin bonds which contains both chlorine and fluorine and which evolves a tin containing vapor at or below the glass temperature.
Claim 2
Dependent Claim
69 words
A process for applying an infra red reflecting fluorine containing tin oxide coating to glass comprising directing on to a hot glass surface at a temperature of 400° to 750° C. a suspension in a carrier gas of a finely divided solid inorganic tin (IV) compound free from carbon-tin bonds which contains both chlorine and fluorine and which evolves a tin containing vapor at or below the glass temperature.
Claim 3
Dependent Claim
60 words
A process according to claim 1 wherein the tin compound used is a hexahalostannate of formula Y 2 (SnHal 6 ) n wherein Y is a cation which does not leave a solid residue when the hexahalostannate decomposes on the hot glass, n is the valency of the cation, and Hal represents halogen, the compound containing both chlorine and fluorine.
Claim 4
Dependent Claim
26 words
A process according to claim 2 wherein a minor atomic proportion of the halogen present in the tin compound is fluorine, and the balance is chlorine.
Claim 5
Dependent Claim
12 words
A process according to claim 3 wherein Y is an ammonium ion.
Claim 6
Dependent Claim
19 words
A process according to claim 3 wherein Y is an ammonium ion substituted with one or more organic groups.
Claim 7
Dependent Claim
12 words
A process according to claim 2 wherein Y is an ammonium ion.
Claim 8
Dependent Claim
19 words
A process according to claim 2 wherein Y is an ammonium ion substituted with one or more organic groups.
Claim 9
Dependent Claim
40 words
A process according to claim 1 wherein the tin compound used is an ammonium hexahalostannate of the formula (NH.sub.4).sub.2 SnHal.sub.6 wherein Hal represents halogen, and a minor atomic proportion of the halogen present is fluorine and the balance is chlorine.
Claim 10
Dependent Claim
25 words
A process according to claim 8 wherein the solid ammonium hexahalostannate used contains an average of 0.1 to 2 fluorine atoms to each tin atom.
Claim 11
Dependent Claim
46 words
A process according to claim 1 wherein the inorganic tin (IV) compound used is an adduct of the formula L 2 SnHal 4 wherein Hal represents halogen, a minor proportion of the halogen present being fluorine and the balance chlorine and L is a monodentate ligand.
Claim 12
Dependent Claim
14 words
A process according to claim 1 in which the carrier gas contains water vapour.
Claim 13
Dependent Claim
26 words
A process according to claim 1 in which the inorganic tin compound used is in finely divided form with a maximum particle size below 100 microns.
Claim 14
Dependent Claim
106 words
A process for forming an infra red reflecting coating on glass comprising mixing in aqueous solution sources of substituted or unsubstituted ammonium ions, tin (IV) ions, fluoride ions and chloride ions in proportions to form an ammonium hexahalostannate in which a minor proportion of the halogen present is fluorine, depositing a solid from the solution and recovering the said solid, and grinding the solid to a finely divided powder, suspending the fine powder obtained in a stream of carrier gas and directing the carrier gas containing the fine powder on to a hot glass surface at a temperature in the range 400° C. to 750° C.
Claim 15
Dependent Claim
106 words
A process for forming an infra red reflecting coating on glass comprising mixing in aqueous solution sources of substituted or unsubstituted ammonium ions, tin (IV) ions, fluoride ions and chloride ions in proportions to form an ammonium hexahalostannate in which a minor proportion of the halogen present is fluorine, depositing a solid from the solution and recovering the said solid, and grinding the solid to a finely divided powder, suspending the fine powder obtained in a stream of carrier gas and directing the carrier gas containing the fine powder on to a hot glass surface at a temperature in the range 400° C. to 750° C.
Claim 16
Dependent Claim
81 words
A process for applying an infra red reflecting fluorine containing tin oxide coating to glass comprising forming a suspension in a carrier gas of a solid hexahalostannate composition of formula Y.sub.2 SnHal.sub.6 wherein Y is an ammonium ion and Hal represents halogen, a minor atomic proportion of the halogen present in the hexahalostannate being fluorine and the balance chlorine, and directing said suspension in the carrier gas onto a hot glass surface at a glass temperature of 400° to 750° C.
Claim 17
Dependent Claim
81 words
A process for applying an infra red reflecting fluorine containing tin oxide coating to glass comprising forming a suspension in a carrier gas of a solid hexahalostannate composition of formula Y.sub.2 SnHal.sub.6 wherein Y is an ammonium ion and Hal represents halogen, a minor atomic proportion of the halogen present in the hexahalostannate being fluorine and the balance chlorine, and directing said suspension in the carrier gas onto a hot glass surface at a glass temperature of 400° to 750° C.
Claim 18
Dependent Claim
24 words
A process according to claim 14 wherein the solid hexahalostannate used contains an average of 0.1 to 2 fluorine atoms to each tin atom.
Claim 19
Dependent Claim
14 words
A process according to claim 14 in which the carrier gas contains water vapour.
Claim 20
Dependent Claim
88 words
A process for applying an infra red reflecting fluorine containing tin oxide coating to glass comprising forming a suspension in a carrier gas of a solid hexahalostannate composition of formula Y.sub.2 SnHal.sub.6 wherein Y is an ammonium ion substituted with one or more organic groups and Hal represents halogen, a minor atomic proportion of the halogen present in the hexahalostannate being fluorine and the balance chlorine, and directing said suspension in the carrier gas onto a hot glass surface at a glass temperature of 400° to 750° C.
Claim 21
Dependent Claim
88 words
A process for applying an infra red reflecting fluorine containing tin oxide coating to glass comprising forming a suspension in a carrier gas of a solid hexahalostannate composition of formula Y.sub.2 SnHal.sub.6 wherein Y is an ammonium ion substituted with one or more organic groups and Hal represents halogen, a minor atomic proportion of the halogen present in the hexahalostannate being fluorine and the balance chlorine, and directing said suspension in the carrier gas onto a hot glass surface at a glass temperature of 400° to 750° C.
References Cited (Backward Citations)
US4172159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |