US5492958A
Expired / Lapsed
US
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Metal containing ceramic coatings
Assignee: Dow Silicones Corp
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Filing: 1995-03-13
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Granted: 1996-02-20
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Expires: 2015-03-13
Abstract
Abstract Disclosed is a method of forming metal containing ceramic coatings on substrates. The method comprises applying a coating of hydrogen silsesquioxane resin and a metallic filler onto a substrate and heating the coated substrate at a temperature sufficient to convert the hydrogen silsesquioxane resin to a silica containing ceramic matrix containing the metallic filler.
Inventors
- 👤 Loren A. Haluska
- 👤 Keith W. Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:54
CPC Classifications
H; H10; H10W; H10W42/00; H10W42/40; C; C03; C03C; C03C17/00; C03C17/006; C03C17/007; C03C17/008; C03C17/009; C03C17/34; C03C17/3411; C03C17/3417; C03C17/3429; C03C17/3435; C03C17/3441; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/5025; C04B41/5035; C04B41/80; C04B41/81; C04B41/85; C04B41/87; C09; C09D; C09D183/00; C09D183/04; C09K; C09K11/00; C09K11/02; C14; C14C; C14C11/00; C23; C23C; C23C18/00; C23C18/02; C23C18/12; C23C18/1204; C23C18/1208; C23C18/122; C23C18/125; C23C18/1262; C23C18/127; C03C2217/00; C03C2217/40; C03C2217/43; C03C2217/44; C03C2217/45; C03C2217/46; C03C2217/47; C03C2217/475; C03C2217/479
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
69 words
A method of forming a metal containing ceramic coating on a substrate comprising: applying a coating composition comprising hydrogen silsesquioxane resin and a finely divided elemental metal or metal alloy solid phase distributed within the resin onto a substrate; and heating the coating composition on the substrate to convert it into a ceramic coating containing the finely divided elemental metal or metal alloy solid phase distributed within the ceramic.
Claim 2
Independent Claim
69 words
A method of forming a metal containing ceramic coating on a substrate comprising: applying a coating composition comprising hydrogen silsesquioxane resin and a finely divided elemental metal or metal alloy solid phase distributed within the resin onto a substrate; and heating the coating composition on the substrate to convert it into a ceramic coating containing the finely divided elemental metal or metal alloy solid phase distributed within the ceramic.
Claim 3
Dependent Claim
53 words
The method of claim 1 wherein the coating composition is applied to the substrate by a process which comprises coating the substrate with a liquid mixture comprising a solvent, the hydrogen silsesquioxane resin and the finely divided elemental metal or metal alloy solid phase distributed within the resin and then evaporating the solvent.
Claim 4
Dependent Claim
32 words
The method of claim 1 wherein the coating composition is heated at a temperature in the range of between about 50° C. and about 800° C. for less than about 3 hours.
Claim 5
Dependent Claim
76 words
The method of claim 1 wherein the coating composition also contains modifying ceramic oxide precursors comprising a compound containing an element selected from the group consisting of titanium, zirconium, aluminum, tantalum, vanadium, niobium, boron and phosphorous wherein the compound contains at least one hydrolyzable substituent selected from the group consisting of alkoxy and acyloxy and the compound is present in an amount such that the coating contains 0.1 to 30 percent by weight modifying ceramic oxide.
Claim 6
Dependent Claim
40 words
The method of claim 1 wherein the coating composition also contains a platinum, rhodium or copper catalyst in an amount of between about 5 and about 500 ppm platinum, rhodium or copper based on the weight of hydrogen silsesquioxane resin.
Claim 7
Dependent Claim
30 words
The method of claim 1 wherein the coating composition also contains a material which modifies the surface of the finely divided elemental metal or metal alloy solid phase for adhesion.
Claim 8
Dependent Claim
31 words
The method of claim 1 wherein the finely divided elemental metal or metal alloy solid phase is in a form selected from the group consisting of powders, filaments, particles, and flakes.
Claim 9
Dependent Claim
36 words
The method of claim 1 wherein the finely divided elemental metal or metal alloy solid phase is present in the coating composition in an amount in the range of about 5 to about 80 weight percent.
Claim 10
Dependent Claim
32 words
The method of claim 1 wherein the finely divided elemental metal or metal alloy solid phase is selected from the group consisting of gold, silver, copper, aluminum, nickel, zinc, chromium, and cobalt.
Claim 11
Dependent Claim
9 words
The substrate coated by the method of claim 1.
Claim 12
Dependent Claim
22 words
A coating composition comprising hydrogen silsesquioxane resin and a finely divided elemental metal or metal alloy solid phase dispersed in a solvent.
Claim 13
Dependent Claim
22 words
A coating composition comprising hydrogen silsesquioxane resin and a finely divided elemental metal or metal alloy solid phase dispersed in a solvent.
Claim 14
Dependent Claim
27 words
The composition of claim 11 which also contains a material which modifies the surface of the finely divided elemental metal or metal alloy solid phase for adhesion.
Claim 15
Dependent Claim
32 words
The composition of claim 11 wherein the finely divided elemental metal or metal alloy solid phase is selected from the group consisting of gold, silver, copper, aluminum, nickel, zinc, chromium, and cobalt.
Claim 16
Independent Claim
71 words
A method of forming a magnetic ceramic coating on a substrate comprising: applying a coating composition comprising hydrogen silsesquioxane resin and a finely divided magnetic solid phase selected from the group consisting of ferrites, iron carbonyls metal alloys distributed within the resin onto a substrate; and heating the coating composition on the substrate to convert it into a ceramic coating containing the finely divided magnetic solid phase distributed within the ceramic.
Claim 17
Independent Claim
71 words
A method of forming a magnetic ceramic coating on a substrate comprising: applying a coating composition comprising hydrogen silsesquioxane resin and a finely divided magnetic solid phase selected from the group consisting of ferrites, iron carbonyls metal alloys distributed within the resin onto a substrate; and heating the coating composition on the substrate to convert it into a ceramic coating containing the finely divided magnetic solid phase distributed within the ceramic.
Claim 18
Dependent Claim
38 words
The method of claim 14 wherein the metal alloy contains at least 2 elemental metals selected from the group consisting of iron, manganese, cobalt, nickel, copper, titanium, tungsten, vanadium, molybdenum, magnesium, aluminum, chromium, zirconium, lead, silicon and zinc.
Claim 19
Dependent Claim
20 words
The method of claim 14 wherein the metal alloy is selected from the group consisting of MnZn, NiZn and CuZn.
Claim 20
Dependent Claim
30 words
A coating composition comprising hydrogen silsesquioxane resin and a finely divided magnetic solid phase selected from the group consisting of ferrites, iron carbonyls and metal alloys dispersed in a solvent.
Claim 21
Dependent Claim
30 words
A coating composition comprising hydrogen silsesquioxane resin and a finely divided magnetic solid phase selected from the group consisting of ferrites, iron carbonyls and metal alloys dispersed in a solvent.
Claim 22
Dependent Claim
11 words
The method of claim 14 wherein the metal alloy contains carbon.
Claim 23
Dependent Claim
12 words
The coating composition of claim 17 wherein the metal alloy contains carbon.
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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) | 1999-02-19 | 1999-08-21 | 2000-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-02-19 | 2003-08-21 | 2004-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-02-19 | 2007-08-21 | 2008-02-20 | $7700.00 | Window Closed / Lapsed |