Patent CA584051A successfully refreshed from Google Patents.
Patent US6022625A successfully refreshed from Google Patents.
US6022625A
Expired / Lapsed
US
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Method for producing thick crack-free coatings from hydrogen silsesquioxane resin
Assignee: Dow Silicones Corp
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Filing: 1998-08-03
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Granted: 2000-02-08
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Expires: 2018-08-03
Abstract
Abstract This invention pertains to a method for producing crack-free, insoluble, greater than 1.25 mu m thick coatings from hydrogen silsesquioxane resin compositions. The method for producing the coating comprises applying a fillerless hydrogen silsesquioxane resin composition onto a substrate and thereafter heating the hydrogen silsesquioxane resin at a temperature of less than 500 DEG C. for a controlled period of time to produce the crack-free coating having a thickness of greater than 1.25 mu m. The resins may be cured in an inert or oxygen containing environment.
Inventors
- 👤 Jeffrey Nicholas Bremmer
- 👤 Kyuha Chung
- 👤 Chandan Kumar Saha
- 👤 Michael John Spaulding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:36
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/60; H10P14/69; H10P14/692; H10P14/6921; H10P14/6922; H10P14/6925; H10P14/63; H10P14/6326; H10P14/65; H10P14/6516; H10P14/6529; H10P14/6342; H10P14/66; H10P14/668; H10P14/6681; H10P14/6684; H10P14/6686; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
68 words
A coated article produced by a method comprising applying a fillerless composition comprising hydrogen silsesquioxane resin onto a substrate to form a film at least 1.25 μm thick and heating the film at a temperature of 150° C. to 500° C. in an inert or oxygen containing environment for a time sufficient to produce an insoluble coating free of cracks having a thickness of at least 1.25 μm.
Claim 2
Dependent Claim
68 words
A coated article produced by a method comprising applying a fillerless composition comprising hydrogen silsesquioxane resin onto a substrate to form a film at least 1.25 μm thick and heating the film at a temperature of 150° C. to 500° C. in an inert or oxygen containing environment for a time sufficient to produce an insoluble coating free of cracks having a thickness of at least 1.25 μm.
Claim 3
Dependent Claim
20 words
The coated article as claimed in claim 1 wherein the insoluble coating has a thickness of 1.5 to 10 μm.
Claim 4
Dependent Claim
20 words
The coated article as claimed in claim 1 wherein the insoluble coating has a thickness of 1.5 to 2.2 μm.
Claim 5
Dependent Claim
15 words
The coated article as claimed in claim 1 wherein the substrate is an electronic substrate.
Claim 6
Dependent Claim
17 words
The coated article as claimed in claim 1 wherein the substrate is an electronic substrate over metalization.
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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) | 2003-02-07 | 2003-08-09 | 2004-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-02-07 | 2007-08-09 | 2008-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-02-07 | 2011-08-09 | 2012-02-08 | $7700.00 | Window Closed / Lapsed |