US3754967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of adhering silicone rubber to metal surfaces using salts
Assignee: Dow Silicones Corp
•
Filing: 1971-06-18
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Granted: 1973-08-28
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Expires: 1991-06-18
Abstract
Abstract The adhesion to metal surfaces of room temperature vulcanizable silicone rubber curable through condensation of silicon-bonded hydroxyls with silicon-bonded alkoxy radicals is improved by contacting the metal surface with aqueous solutions of sodium ammonium or potassium salts of chlorides, iodides, bromides, bicarbonates, sulfates, dihydrogenphosphates, monohydrogenphosphates, tetraborates, perchlorates, nitrates or nitrites, rinsing the surface, drying, thereafter applying the room temperature vulcanizable silicone rubber to the treated surface and allowing it to cure.
Inventors
- 👤 T Greenlee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:39
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/12; C08J2383/00; C08J2383/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
14 words
The method in accordance with claim 1 wherein the salt is a sodium salt.
Claim 2
Dependent Claim
14 words
The method in accordance with claim 1 wherein the salt is a potassium salt.
Claim 3
Dependent Claim
14 words
The method in accordance with claim 2 wherein the sodium salt is sodium tetraborate.
Claim 4
Dependent Claim
15 words
The method in accordance with claim 2 wherein the sodium salt is a sodium nitrite.
Claim 5
Dependent Claim
14 words
The method in accordance with claim 2 wherein the sodium salt is sodium chloride.
Claim 6
Dependent Claim
20 words
The method in accordance with claim 2 wherein the sodium salt is a mixture of sodium dihydrogenphosphate and sodium monohydrogenphosphate.
Claim 7
Dependent Claim
14 words
The method in accordance with claim 3 wherein the potassium salt is potassium bromide.
Claim 8
Dependent Claim
14 words
The method in accordance with claim 3 wherein the potassium salt is potassium iodide.
Claim 9
Dependent Claim
14 words
The method in accordance with claim 3 wherein the potassium salt is potassium nitrate.
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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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |