US3794556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primer composition for adhering silicone elastomer to substrates
Assignee: Dow Silicones Corp
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Filing: 1972-01-31
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Granted: 1974-02-26
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Expires: 1992-01-31
Abstract
Abstract A MIXTURE OF TETRAALKOXYSILANE OR PARTIAL HYDROLYZATE THEREOF, A TETRAALKYLTITANATE, A COMPOUND OF THE FORMULA CF3CH2CH2SI(OSO(CH3)2X)3 WHERE X IS A HYDROGEN ATOMS OR -CH2CH2SI(OOCCH3)3 AND AT LEAST ONE X IS A -CH2CH2SI(OOCCH3)3 AND AN ORGANIC SOLVENT IS USEFUL AS A PRIMER IN ADHERING SILICONE ELASTOMER TO SUBSTRATES SUCH AS EPOXY RESINS AND POLYURETHANE. AN EXAMPLE OF THE PRIMER IS ONE PART EACH OF ETHYLPOLYSILICATE, TETRABUTYLTITANATE AND CF3CH2CH2SI(OSI(CH3)2CH2CH2SI(OOCCH3)3)3 AND TEN PARTS OF ACETONE.
Inventors
- 👤 D Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:21
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1896; C07F7/0834; C07F7/0838; C07F7/0872; C07F7/0876; C07F7/0878; C07F7/0879; C09; C09D; C09D4/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31551; Y10T428/31598; Y10T428/31652; Y10T428/31663; Y10T428/31667
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |