US2932586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing copolymer of silanols and isocyanatosilanes, resultant copolymer and method of coating the interior of containers therewith
Assignee: North American Aviation Corp
•
Filing: 1956-01-16
•
Granted: 1960-04-12
•
Expires: 1976-01-16
Abstract
No abstract record available.
Inventors
- 👤 Jardine C Wilson
- 👤 Max A Nadler
- 👤 Katz Irving
- 👤 Walti Alphonse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:35
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3893; C08G18/70; C08G18/72; C08G18/77; C08G18/778; C08G77/00; C08G77/48; C08G77/54; C08G77/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
AN ORGANIC SILICON-CONTAINING POLYMER OBTAINED BY COPOLYMERIZING AT A TEMPERATURE OF FROM ABOUT 0*C. TO ABOUT 450*C. (1) AT LEAST ONE SILANOL SELECTED FROM THE CLASS CONSISTING OF DIHYDROCARBON SUBSTITUED SILANEDIOLS AND TRIHYDROCARBON SUBSTITUTED SILANOLS, WHEREIN AT LEAST ABOUT 95 WEIGHT PERCENT OF SAID SILANOLS ARE DIHYDROCARBON SUBSTITUTED SILANEDIOLS, WHEREIN THE HYDROCARBON SUBSTITUENTS ON SAID SILANOLS HAVE FROM 1 TO ABOUT 20 CARBON ATOMS, AND WHEREIN THE TOTAL NUMBER OF HYDROXYL GROUPS AND HYDROCARBON SUBSTITUENTS ON THE SILICON ATOM OF SAID SILANOL IS 4, WITH (2) AT LEAST ONE ISOCYANATOSILANE, WHEREIN AT LEAST ABOUT 50 MOL PERCENT OF SAID ISOCYANATOSILANES ARE DIHYDROCARBON SUBSTITUTED ISOCYANATOSILANES, WHEREIN EACH OF THE HYDROCARBON SUBSTITUENTS ON SAID ISOCYANATOSILANES HAS FROM 1 TO ABOUT 20 CARBON ATOMS, WHEREIN THE TOTAL NUMBER OF ISOCYANATO GROUPS AND HYDROCARBON SUBSTITUENTS ON THE SILICON ATOM OF SAID ISOCYANATOSILANE IS 4, AND WHEREIN THE MOLAR RATIO OF (1)-TO-(2) IS FROM ABOUT 100:1 TO ABOUT 1:1.
Claim 2
Dependent Claim
154 words
AN ORGANIC SILICON-CONTAINING POLYMER OBTAINED BY COPOLYMERIZING AT A TEMPERATURE OF FROM ABOUT 0*C. TO ABOUT 450*C. (1) AT LEAST ONE SILANOL SELECTED FROM THE CLASS CONSISTING OF DIHYDROCARBON SUBSTITUED SILANEDIOLS AND TRIHYDROCARBON SUBSTITUTED SILANOLS, WHEREIN AT LEAST ABOUT 95 WEIGHT PERCENT OF SAID SILANOLS ARE DIHYDROCARBON SUBSTITUTED SILANEDIOLS, WHEREIN THE HYDROCARBON SUBSTITUENTS ON SAID SILANOLS HAVE FROM 1 TO ABOUT 20 CARBON ATOMS, AND WHEREIN THE TOTAL NUMBER OF HYDROXYL GROUPS AND HYDROCARBON SUBSTITUENTS ON THE SILICON ATOM OF SAID SILANOL IS 4, WITH (2) AT LEAST ONE ISOCYANATOSILANE, WHEREIN AT LEAST ABOUT 50 MOL PERCENT OF SAID ISOCYANATOSILANES ARE DIHYDROCARBON SUBSTITUTED ISOCYANATOSILANES, WHEREIN EACH OF THE HYDROCARBON SUBSTITUENTS ON SAID ISOCYANATOSILANES HAS FROM 1 TO ABOUT 20 CARBON ATOMS, WHEREIN THE TOTAL NUMBER OF ISOCYANATO GROUPS AND HYDROCARBON SUBSTITUENTS ON THE SILICON ATOM OF SAID ISOCYANATOSILANE IS 4, AND WHEREIN THE MOLAR RATIO OF (1)-TO-(2) IS FROM ABOUT 100:1 TO ABOUT 1:1.
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) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |