US3729515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dimerization
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1967-01-10
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Granted: 1973-04-24
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Expires: 1987-01-10
Abstract
Abstract THE PRESENT DISCLOSURE CONCERNS THE USE OF ZN-EXCHANGED, MG-EXCHANGED, ZN AND CO-EXCHANGED, MG AND CO-EXCHANGED AND MG, ZN AND CO-EXCHANGED CRYSTALLINE ZEOLITE MOLECULAR SIEVES WITH EFFECTIVE PORE OPENINGS OF 4 TO 15 ANGSTROM UNITS ("ZEOLITE A," "ZEOLITE X" AND "ZEOLITE Y" EXCHANGED SIEVES) TO DIMERIZE C2 TO C20 SATURATED, ALIPHATIC ALDEHYDS AND C3 TO C20 SATURATED, ALIPHATIC KETONES. THESE MATERIALS ARE KNOWN COMPOUNDS WHICH, UPON HYDROGENATION TO YIELD 1,3-GLYCOLS, ARE USEFUL AS INSECT REPELLENTS AND SYNTHETIC LUBRICANTS INTERMEDIATES, PLASTICIZERS, ETC.
Inventors
- 👤 N Cull
- 👤 E Gladrow
- 👤 R Mason
- 👤 G Hamner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:33
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/72; C07C45/73; B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/186; B01J29/00; B01J29/04; B01J29/06; B01J29/064; B01J29/072; C07C45/74
Claims Analysis
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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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |