Patent US2827474A successfully refreshed from Google Patents.
US2827474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of reactive organosilanols
Assignee: Honeywell International Inc
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Filing: 1953-05-22
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Granted: 1958-03-18
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Expires: 1973-05-22
Abstract
No abstract record available.
Inventors
- 👤 Bernard H Kress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:46
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0836
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A METHOD OF PRODUCING HIGHLY REACTIVE ORGANOSILANOLS AND COMPRISES HYDROLYZING, UNDER ACIDIC CONDITIONS, A SILANE COMPOSITION CONSISTING ESSENTIALLY OF TRIFUNCTIONAL ORGANOSILANE, SAID SILANE COMPOSITION BEING IN SOLUTION IN A SOLVENT MEDIUM THAT FORMS A TWO-PHASE SYSTEM WITH THE WATER USED FOR HYDROLYSIS AND COMPRISES A SUBSTANCE WHOSE MOLECULE CONSISTS OF HYDROGEN ATOMS, AT LEAST FIVE CARBON ATOMS AND FROM ONE TO TWO OXYGEN ATOMS, THE CARBON AND HYDROGEN ATOMS BEING CONTAINED IS TWO ALKYL GROUPS AND A CARBONYL GROUP, AND AT LEAST ONE OF THE ALKYL GROUPS BEING CONNECTED DIRECTLY TO THE CARBONYL GROUP, THEREBY TO OBTAIN A SOLUTION, IN SAID SOLVENT MEDIUM, OF AN ACIDIC, LOW MOLECULAR WEIGHT PRODUCT HAVING A HIGH HYDROXYL CONTENT WHEREIN THE MOLECULAR WEIGHT IS BELOW 5000 AND THE HYDROXYL CONTENT EXPRESSED AS THE HYDROXYL/SILICON RATIO (H), REPRESENTING THE AVERAGE NUMBER OF HYDROXYL GROUPS PER SILICON ATOM, IS FORM 0.10 TO 1.05.
Claim 2
Independent Claim
147 words
A METHOD OF PRODUCING HIGHLY REACTIVE ORGANOSILANOLS AND COMPRISES HYDROLYZING, UNDER ACIDIC CONDITIONS, A SILANE COMPOSITION CONSISTING ESSENTIALLY OF TRIFUNCTIONAL ORGANOSILANE, SAID SILANE COMPOSITION BEING IN SOLUTION IN A SOLVENT MEDIUM THAT FORMS A TWO-PHASE SYSTEM WITH THE WATER USED FOR HYDROLYSIS AND COMPRISES A SUBSTANCE WHOSE MOLECULE CONSISTS OF HYDROGEN ATOMS, AT LEAST FIVE CARBON ATOMS AND FROM ONE TO TWO OXYGEN ATOMS, THE CARBON AND HYDROGEN ATOMS BEING CONTAINED IS TWO ALKYL GROUPS AND A CARBONYL GROUP, AND AT LEAST ONE OF THE ALKYL GROUPS BEING CONNECTED DIRECTLY TO THE CARBONYL GROUP, THEREBY TO OBTAIN A SOLUTION, IN SAID SOLVENT MEDIUM, OF AN ACIDIC, LOW MOLECULAR WEIGHT PRODUCT HAVING A HIGH HYDROXYL CONTENT WHEREIN THE MOLECULAR WEIGHT IS BELOW 5000 AND THE HYDROXYL CONTENT EXPRESSED AS THE HYDROXYL/SILICON RATIO (H), REPRESENTING THE AVERAGE NUMBER OF HYDROXYL GROUPS PER SILICON ATOM, IS FORM 0.10 TO 1.05.
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) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |