Patent US4302107A successfully refreshed from Google Patents.
US3556983A
Expired / Lapsed
US
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Process for the selective hydrogenation of pyrolysis gasoline
Assignee: Bayer AG
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Filing: 1968-10-15
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Granted: 1971-01-19
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Expires: 1988-10-15
Abstract
Abstract HYDROGENATION OF PYROLYSIS GASOLINES OR FRACTIONS THEREOF IN A FIRST STEP AT A TEMPERATURE BELOW ABOUT 100* C. TO HYDROGENATE SELECTIVELY SUBSTANTIALLY THE DIOLEFIN CONTENT THEREIN, AND THEREAFTER IN A SECOND STEP OF THE HYDROCARBON MIXTURE OBTAINED FROM THE FIRST STEP AT A TEMPERATURE ABOVE 100*C., E.G. AT ABOUT 150-250*C., TO HYDROGENATE SELECTIVELY SUBSTANTIALLY THE MONO-OLEFIN CONTENT THEREIN, BOTH STEPS USING NOBLE METAL ON AN ALUMINUM SPINEL SUPPORT AS HYDROGENATION CATALYST, AT A HYDROGEN PRESSURE OF ABOUT 20-80 ATMOSPHERES, PREFERABLEY IN A SUBSTANTIALLY STATIC HYDROGEN ATMOSPHERE, AND OPTIONALLY WITH RECYCLING OF HYDROGENATION PRODUCT TO THE HYDROGENATION REACTOR.
Inventors
- 👤 Walter Kronig
- 👤 Kurt Halcour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:05
CPC Classifications
C; C10; C10G; C10G65/00; C10G65/02; C10G65/04; C10G65/06; C10G2400/00; C10G2400/02
Claims Analysis
Total Claims: 0
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |