Patent US4898907A successfully refreshed from Google Patents.
US4898907A
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Compositions of platinum and rhodium catalyst in combination with hydrogen silsesquioxane resin
Assignee: Dow Silicones Corp
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Filing: 1988-10-27
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Granted: 1990-02-06
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Expires: 2008-10-27
Abstract
Abstract This invention relates to materials produced by diluting in a solvent a platinum or rhodium catalyzed preceramic mixture of a hydrogen silsesquioxane resin. 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 SiO 2 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
2026-11-01 15:45
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/02; C23C18/12; C23C18/1204; C23C18/122; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/5025; C04B41/5035; C04B41/52; C23C18/1208; C23C18/125; C23C18/1275; H; H10; H10P; H10P14/00; H10P14/60; H10P14/63; H10P14/6326; H10P14/6342; H10P14/65; H10P14/6516; H10P14/6529; H10P14/66; H10P14/662; H10P14/69; H10P14/692; H10P14/6921; H10P14/69215; H10P14/6922; H10P14/6925; H10P14/694; H10P14/6943; H10P14/69433; H10W; H10W74/00; H10W74/01; H10W74/40; H10W74/47; H10W74/476
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
32 words
A composition of matter comprising a solvent solution of a mixture of (a) hydrogen silsesquioxane resin, and (b) a metal catalyst selected from the group consisting of platinum catalysts and rhodium catalysts.
Claim 2
Dependent Claim
32 words
A composition of matter comprising a solvent solution of a mixture of (a) hydrogen silsesquioxane resin, and (b) a metal catalyst selected from the group consisting of platinum catalysts and rhodium catalysts.
Claim 3
Dependent Claim
21 words
The composition of claim 1 where the solvent solution contains 0.1 to 10 percent by weight of the hydrogen silsesquioxane resin.
Claim 4
Dependent Claim
19 words
The composition of claim 1 where the solvent solution contains 1 percent by weight of the hydrogen silsesquioxane resin.
Claim 5
Dependent Claim
19 words
The composition of claim 1 where the solvent solution contains 5 percent by weight of the hydrogen silsesquioxane resin.
Claim 6
Dependent Claim
10 words
The composition of claim 1 where the solvent is toluene.
Claim 7
Dependent Claim
10 words
The composition of claim 1 where the solvent is n-heptane.
Claim 8
Dependent Claim
23 words
The composition of claim 1 where the metal catalyst is RhCl 3 (CH 3 CH 2 CH 2 CH 2 S) 3 .
Claim 9
Dependent Claim
19 words
The composition of claim 1 where the metal catalyst is (CH 3 CH 2 S) 2 PtCl 2 .
Claim 10
Dependent Claim
17 words
The composition of claim 1 where the metal catalyst is Pt(CH 3 CH[O]CHCH[O]CH 3 ) 2 .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-05 | 1993-08-07 | 1994-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-05 | 1997-08-07 | 1998-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-05 | 2001-08-07 | 2002-02-06 | $7700.00 | Window Closed / Lapsed |