US6022625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing thick crack-free coatings from hydrogen silsesquioxane resin
Assignee: Dow Silicones Corp
•
Filing: 1998-08-03
•
Granted: 2000-02-08
•
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 09:07
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.
References Cited (Backward Citations)
US3615272A
Cited
JPS59178749A
Cited
US5635250A
Cited
JPS63107122A
Cited
US4756977A
Cited
US4822697A
Cited
US4808653A
Cited
US5008320A
Cited
US5011706A
Cited
US4999397A
Cited
US5010159A
Cited
US5380567A
Cited
US5290354A
Cited
US5059448A
Cited
US5063267A
Cited
JPH0686017A
Cited
US5436029A
Cited
US5416190A
Cited
US5370904A
Cited
US5370903A
Cited
US5372842A
Cited
US5380555A
Cited
US5458912A
Cited
US5320868A
Cited
US5441765A
Cited
US5547703A
Cited
US5549934A
Cited
US5618878A
Cited
EP0742184A1
Cited
WO1997007164A1
Cited
US5684356A
Cited
JPH09324051A
Cited
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 |