Patent US2921039A successfully refreshed from Google Patents.
US2921039A
Expired / Lapsed
US
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Diisocyanate-conjugated diolefin foam product and method of preparing same
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-04-17
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Granted: 1960-01-12
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Expires: 1977-04-17
Abstract
No abstract record available.
Inventors
- 👤 John F Mckay
- 👤 Ober C Slotterbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:08
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/69; C08G2110/00; C08G2110/0025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A METHOD FOR PREPARING A RIGID FOAM WHICH COMPRISES REACTING 100 PARTS OF AN OXIDIZED DRYING OIL WITH 1 TO 25 PARTS OF AN ORGANIC DIISOCYANATE, WHEREBY A GAS IS EVOLVED FORMING A FOAM, AND CURING THE FOAM THEREFROM AT A TEMPERATURE BETWEEN ABOUT 100* AND 250* C., SAID DRYING OIL BEING PREPARED BY POLYMERIZING A C4 TO C6 CONJUGATED DIOLEFIN IN THE PRESENCE OF AN ALKALI METAL CATALYSTS, AND BY OXIDIZING SAID DRYING OIL BY AIR BLOWING TO INCORPORATE 5 TO 20 WEIGTH PERCENT OXYGEN IN THE STRUCTURE.
Claim 2
Independent Claim
89 words
A METHOD FOR PREPARING A RIGID FOAM WHICH COMPRISES REACTING 100 PARTS OF AN OXIDIZED DRYING OIL WITH 1 TO 25 PARTS OF AN ORGANIC DIISOCYANATE, WHEREBY A GAS IS EVOLVED FORMING A FOAM, AND CURING THE FOAM THEREFROM AT A TEMPERATURE BETWEEN ABOUT 100* AND 250* C., SAID DRYING OIL BEING PREPARED BY POLYMERIZING A C4 TO C6 CONJUGATED DIOLEFIN IN THE PRESENCE OF AN ALKALI METAL CATALYSTS, AND BY OXIDIZING SAID DRYING OIL BY AIR BLOWING TO INCORPORATE 5 TO 20 WEIGTH PERCENT OXYGEN IN THE STRUCTURE.
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) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |