US4005232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coatings of metal phosphates on metals or glass
Assignee: Imperial Chemical Industries Ltd
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Filing: 1975-02-25
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Granted: 1977-01-25
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Expires: 1995-02-25
Abstract
Abstract A metal phosphate coating is applied to a glass article. A liquid composition containing at least in part an organic component and a metal compound having a metal with an atomic number of 12, 14, 20-32, 39-50, 56-80, 90 or 92 and an oxyacid of phosphorus is applied to the glass article. The liquid composition is converted to the metal phosphate coating, i.e., by air drying and/or heating, to give a coating of 0.01 to 5 microns thickness and being transparent to visible light but ultra-violet absorbing.
Inventors
- 👤 Neville Colebourne
- 👤 Nicholas Rolfe
- 👤 Kevin Thomas McAloon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:14
CPC Classifications
C; C09; C09D; C09D1/00; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/455; C01G; C01G28/00; C01G28/007; C03; C03C; C03C13/00; C03C17/00; C03C17/22; C03C17/23; C03C17/25; C03C17/256; C03C25/00; C03C25/10; C03C25/24; C03C25/38; C03C25/42; C04; C04B; C04B28/00; C04B28/34; C04B28/342; C04B41/00; C04B41/45; C04B41/50; C04B41/51; C04B41/80; C04B41/81; C04B41/85; C04B41/88; C07; C07F; C07F9/00; C07F9/66; C08; C08J; C08J7/00; C08J7/04; C08J7/043; C08J7/044; C08J7/046; C08J7/048; C08J7/056; C08J7/06; C09D5/00; C09D5/32; C23; C23C; C23C22/00; C23C22/02; C23C22/03; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/23; C03C2218/00; C03C2218/10; C03C2218/11; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/294; Y10T428/2958
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
153 words
A coated glass article comprising a glass substrate and a coating thereon which has a thickness of 0.01 to 5 microns and is transparent to visible light but ultra-violet light absorbing, said coating being identifiable as the dried residue of a liquid coating composition containing an organic component and a solution of a metal phosphate compound wherein the metal of the compound is selected from the group consisting of iron, titanium, a mixture of iron and titanium and a mixture of iron and chromium, and wherein the phosphate of the compound is an oxyacid of phosphorus, or a compound capable of forming such an oxyacid in the solution of the said compound, the oxyacid being an ortho- or meta-acid of the structure (1) ##STR5##where X 1 and X 2 are the same or different and are selected from hydrogen, hydroxyl, halide or which may have the structure (2) to provide pyrophosphoric acid ##STR6##
Claim 2
Dependent Claim
153 words
A coated glass article comprising a glass substrate and a coating thereon which has a thickness of 0.01 to 5 microns and is transparent to visible light but ultra-violet light absorbing, said coating being identifiable as the dried residue of a liquid coating composition containing an organic component and a solution of a metal phosphate compound wherein the metal of the compound is selected from the group consisting of iron, titanium, a mixture of iron and titanium and a mixture of iron and chromium, and wherein the phosphate of the compound is an oxyacid of phosphorus, or a compound capable of forming such an oxyacid in the solution of the said compound, the oxyacid being an ortho- or meta-acid of the structure (1) ##STR5##where X 1 and X 2 are the same or different and are selected from hydrogen, hydroxyl, halide or which may have the structure (2) to provide pyrophosphoric acid ##STR6##
Claim 3
Dependent Claim
21 words
The coated article of claim 1 in which at least 75% by weight of the said composition is the organic component.
Claim 4
Dependent Claim
15 words
The coated article of claim 10 in which the oxyacid of phosphorus is orthophosphoric acid.
Claim 5
Dependent Claim
33 words
The coated article of claim 3 in which the said organic component is selected from alcohols, esters, ketones, aldehydes, ethers and nitro compounds or a mixture of two or more of such components.
Claim 6
Dependent Claim
132 words
The coated article of claim 4 in which the organic component is: a. a monohydric alcohol of the structure ROH, b. an ester of the structure R 1 COOR 2 or c. an ether of the structure R 1 OR 2 or a cyclic ether of the structure R 3 O, d. a ketone of the structure R 1 COR 2 , e. a nitro compound of the structure R 1 NO 2 , where R, R 1 and R 2 are alkyl (including cyclic alkyl) groups or substituted alkyl groups containing from 1 to 10 carbon atoms and R 3 is a divalent alkyl group containing from 4 to 7 carbon atoms, one of which may be replaced by an oxygen atom, or mixtures of one of more of such components.
Claim 7
Dependent Claim
20 words
The coated article of claim 15 in which the atomic ratio of metal-to-phosphorus is in the range 1:0.5 to 1:2.
Claim 8
Dependent Claim
24 words
The coated article of claim 10 in which the glass article is in the form of a film, filament, sheet, tube, bulb or bottle.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |