US4148965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for processing a body having a vitreous surface
Assignee: BFG Glassgroup GIE
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Filing: 1977-03-22
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Granted: 1979-04-10
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Expires: 1997-03-22
Abstract
Abstract A method of processing a body having a surface of which at least a portion is vitreous and during which the vitreous region or regions of the surface become(s) activated. While the surface is at elevated temperature, it is contacted by gaseous hydrogen in a non-oxidizing, dehydrated atmosphere, after such hydrogen has been conditioned by contact with a substance at elevated temperature which is capable of provoking the fixation of hydrogen to the vitreous region or regions of the surface.
Inventors
- 👤 Andre Jelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:10
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/28; C03C17/32; C03C23/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31; Y10T428/315; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T428/31649
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
131 words
A method of processing a body having a surface of which at least a portion is vitreous and during which the vitreous region or regions of said surface become(s) activated, comprising contacting the surface, while it is at elevated temperature, with gaseous hydrogen in a non-oxidizing, dehydrated atmosphere, after such hydrogen has been conditioned by contact at elevated temperature with a substance which is a metal or metal alloy comprising at least one metal selected from one or more of groups IIIB, IVB, VB, VIB, VIIB and VIII of the periodic table of elements, and which is capable of provoking the fixation of hydrogen to the vitreous region or regions of said surface, to thereby activate the vitreous surface such that an organic radical can be directly grafted onto said surface.
Claim 2
Independent Claim
131 words
A method of processing a body having a surface of which at least a portion is vitreous and during which the vitreous region or regions of said surface become(s) activated, comprising contacting the surface, while it is at elevated temperature, with gaseous hydrogen in a non-oxidizing, dehydrated atmosphere, after such hydrogen has been conditioned by contact at elevated temperature with a substance which is a metal or metal alloy comprising at least one metal selected from one or more of groups IIIB, IVB, VB, VIB, VIIB and VIII of the periodic table of elements, and which is capable of provoking the fixation of hydrogen to the vitreous region or regions of said surface, to thereby activate the vitreous surface such that an organic radical can be directly grafted onto said surface.
Claim 3
Dependent Claim
24 words
A method according to claim 1, wherein the metal is selected from Ti, Hf, Nb, Ta, Cr, W, Fe, Co, Ni, Pd and Pt.
Claim 4
Dependent Claim
19 words
A method according to claim 1 wherein said surface and said substance are contained in the same heated chamber.
Claim 5
Dependent Claim
17 words
A method according to claim 1 wherein the substance is in the solid state near said surface.
Claim 6
Dependent Claim
19 words
A method according to claim 1 wherein said surface and said substance are at substantially the same elevated temperature.
Claim 7
Dependent Claim
23 words
A method according to claim 1 wherein said surface is kept at a temperature between 600° and 1000° C. during the activation treatment.
Claim 8
Dependent Claim
23 words
A method according to claim 1 wherein the non-oxidizing, dehydrated atmosphere contains hydrogen at a partial pressure of at least 10 mm Hg.
Claim 9
Dependent Claim
20 words
A method according to claim 1 wherein the atmosphere is used to scavenge at least one region of the surface.
Claim 10
Dependent Claim
22 words
A method according to claim 1 wherein the hydrogenated atmosphere is maintained at a pressure of at least 1 kg/m 2 .
Claim 11
Dependent Claim
56 words
A method according to claim 1 wherein the body is a continuous ribbon of molten glass formed on the surface of a bath of molten metal by the known "float" method, and the surface of such ribbon is contacted with hydrogen which has been conditioned to bring about activation while the ribbon floats on the bath.
Claim 12
Dependent Claim
34 words
A method according to claim 1 wherein, after activation, the surface is placed in contact with an unsaturated organic substance capable of becoming directly fixed to the surface by reaction with the fixed hydrogen.
Claim 13
Dependent Claim
28 words
A method according to claim 11 wherein after activation and prior to contact with the organic substance, the surface is heated and simultaneously outgassed in a high vacuum.
Claim 14
Dependent Claim
28 words
A method according to claim 11 wherein after activation and prior to contact with the organic substance, the surface is heated and simultaneously scavenged with an inert gas.
Claim 15
Dependent Claim
23 words
A method according to claim 11 wherein the organic substance which is brought into contact with the activated surface is in gaseous form.
Claim 16
Dependent Claim
16 words
A method according to claim 11 wherein the organic substance comprises a monomer and/or a prepolymer.
Claim 17
Dependent Claim
22 words
A method according to claim 15 wherein the monomer is selected from benzene, ethylene, propylene, isobutylene, vinyl benzene, vinyl chloride and tetrafluoroethylene.
Claim 18
Dependent Claim
24 words
A body having a surface of which at least a portion is vitreous and has been processed by a method according to claim 11.
References Cited (Backward Citations)
US2519059A
Cited
US2662034A
Cited
US2876133A
Cited
US3171728A
Cited
US3264720A
Cited
US3713867A
Cited
US3876410A
Cited
US3836386A
Cited
US3993835A
Cited
US3856498A
Cited
US3888705A
Cited
US4022601A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-09 | 1982-10-09 | 1983-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-09 | 1986-10-09 | 1987-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-09 | 1990-10-09 | 1991-04-10 | $7700.00 | Window Closed / Lapsed |