Patent US3129256A successfully refreshed from Google Patents.
US3129256A
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Alkylation of benzene with propylene in the presence of a catalyst containing titanium tetrachloride, alkyl aluminum sesquichloride, and oxygen
Assignee: Gulf Research and Development Co
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Filing: 1959-12-01
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Granted: 1964-04-14
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Expires: 1979-12-01
Abstract
No abstract record available.
Inventors
- 👤 Russell G Hay
- 👤 Leo F Meyer
- 👤 Charles M Selwitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:16
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/68; C07C2527/00; C07C2527/06; C07C2527/135; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/14; C07C2531/26; C07C2531/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PROCESS FOR ALKYLATING AN ALYLATABLE AROMATIC HYDROCARBON WHICH COMPRISES REACTING BENZENE WITH PROPYLENE IN THE PRESENCE OF A CATALYST SYSTEM CONTAINING TITANIUM TETRACHLORIDE AND AN ALKYL ALUMINUM SESQUICHLORIDE IN A MOLAR RATION OF ABOUT 1:1 TO ABOUT 9:1, WHEREIN SAID ALKYL SUBSTITUENT HAS FROM ONE TO FOUR CARBON ATOMS,, WITH THE TOTAL AMOUNT OF CATALYST BEING AT LEAST ABOUT 0.1 MILLIMOL PER MOL OF SAID ALKYLATABLE AROMATIC COMPOUND, AND ABOUT 0.2 TO ABOUT TWO MOLS OF A MATERIAL CONTAINING ACTIVE OXYGEN SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND CARBON DIOXIDE PER MOL OF COMBINED CATALYST AT A PRESSURE OF ABOUT ATMOSPHERIC TO ABOUT 500 POUNDS PER SQUARE INCH GAUGE, A TEMPERATURE OF ABOUT 20* T ABOUT 220*C. FOR A PERIOD OF FROM ABOUT FIVE MINUTES TO ABOUT FOUR HOURS.
Claim 2
Dependent Claim
131 words
A PROCESS FOR ALKYLATING AN ALYLATABLE AROMATIC HYDROCARBON WHICH COMPRISES REACTING BENZENE WITH PROPYLENE IN THE PRESENCE OF A CATALYST SYSTEM CONTAINING TITANIUM TETRACHLORIDE AND AN ALKYL ALUMINUM SESQUICHLORIDE IN A MOLAR RATION OF ABOUT 1:1 TO ABOUT 9:1, WHEREIN SAID ALKYL SUBSTITUENT HAS FROM ONE TO FOUR CARBON ATOMS,, WITH THE TOTAL AMOUNT OF CATALYST BEING AT LEAST ABOUT 0.1 MILLIMOL PER MOL OF SAID ALKYLATABLE AROMATIC COMPOUND, AND ABOUT 0.2 TO ABOUT TWO MOLS OF A MATERIAL CONTAINING ACTIVE OXYGEN SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND CARBON DIOXIDE PER MOL OF COMBINED CATALYST AT A PRESSURE OF ABOUT ATMOSPHERIC TO ABOUT 500 POUNDS PER SQUARE INCH GAUGE, A TEMPERATURE OF ABOUT 20* T ABOUT 220*C. FOR A PERIOD OF FROM ABOUT FIVE MINUTES TO ABOUT FOUR HOURS.
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) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |