US4808653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating composition containing hydrogen silsesquioxane resin and other metal oxide precursors
Assignee: Dow Silicones Corp
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Filing: 1988-03-10
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Granted: 1989-02-28
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Expires: 2008-03-10
Abstract
Abstract This invention relates to materials produced by diluting in a solvent a preceramic mixture of a hydrogen silsesquioxane resin and a metal oxide precursor selected from the group consisting of an aluminum alkoxide, a titanium alkoxide, and a zirconium alkoxide. The preceramic mixture solvent solution is applied to a substrate and ceramified by heating. One or more ceramic coatings containing silicon carbon, silicon nitrogen, or silicon carbon nitrogen can be applied over the ceramified SiO2/metal oxide coating. A CVD or PECVD top coating can be applied for further protection. The invention is particularly useful for coating electronic devices.
Inventors
- 👤 Loren A. Haluska
- 👤 Keith W. Michael
- 👤 Leo Tarhay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:25
CPC Classifications
H; H10; H10W; H10W74/00; H10W74/40; H10W74/43; H10W74/01; H10W74/10; H10W74/131; H10W74/137; H10W74/47; H10W74/476
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
34 words
A composition of matter comprising a solvent solution of a mixture of hydrogen silsesquioxane resin and a metal oxide precursor selected from the group consisting of an aluminum alkoxide, titanium alkoxide, and zirconium alkoxide.
Claim 2
Dependent Claim
34 words
A composition of matter comprising a solvent solution of a mixture of hydrogen silsesquioxane resin and a metal oxide precursor selected from the group consisting of an aluminum alkoxide, titanium alkoxide, and zirconium alkoxide.
Claim 3
Dependent Claim
29 words
The composition as claimed in claim 1 where the solution contains from 0.1 to 10 percent by weight of the mixture of hydrogen silsesquioxane resin and metal oxide precursor.
Claim 4
Dependent Claim
35 words
The composition as claimed in claim 2 where the mixture of hydrogen silsesquioxane resin and metal oxide precursor contains 0.1 to approximately 30 percent by weight, calculated as the metal oxide, of metal oxide precursor.
Claim 5
Dependent Claim
12 words
The composition as claimed in claim 3 where the solvent is toluene.
Claim 6
Dependent Claim
12 words
The composition as claimed in claim 3 where the solvent is n-heptane.
Claim 7
Dependent Claim
15 words
The composition as claimed in claim 3 where the metal oxide precursor is tetra-n-propoxy zirconium.
Claim 8
Dependent Claim
15 words
The composition as claimed in claim 3 where the metal oxide precursor is tetra-isobutoxy titanium.
Claim 9
Dependent Claim
15 words
The composition as claimed in claim 3 where the metal oxide precursor is aluminum pentanedionate.
Claim 10
Dependent Claim
36 words
A composition of matter comprising a methyl ethyl ketone solution of a mixture of hydrogen silsesquioxane resin and a metal oxide precursor selected from the group consisting of an aluminum alkoxide, titanium alkoxide, and zirconium alkoxide.
Claim 11
Dependent Claim
36 words
A composition of matter comprising a methyl ethyl ketone solution of a mixture of hydrogen silsesquioxane resin and a metal oxide precursor selected from the group consisting of an aluminum alkoxide, titanium alkoxide, and zirconium alkoxide.
Claim 12
Dependent Claim
29 words
The composition as claimed in claim 9 where the solution contains from 0.1 to 10 percent by weight of the mixture of hydrogen silsesquioxane resin and metal oxide precursor.
Claim 13
Dependent Claim
35 words
The composition as claimed in claim 10 where the mixture of hydrogen silsesquioxane resin and metal oxide precursor contains 0.1 to approximately 30 percent by weight, calculated as the metal oxide, of metal oxide precursor.
References Cited (Backward Citations)
US4756977A
Cited
US4753855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-28 | 1992-08-29 | 1993-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-28 | 1996-08-29 | 1997-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-28 | 2000-08-29 | 2001-02-28 | $7700.00 | Window Closed / Lapsed |