Patent US2756264A successfully refreshed from Google Patents.
US2756264A
Expired / Lapsed
US
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Tertiary butylxylene production
Assignee: Standard Oil Co
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Filing: 1953-11-17
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Granted: 1956-07-24
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Expires: 1973-11-17
Abstract
No abstract record available.
Inventors
- 👤 David A Mccaulay
- 👤 Arthur P Lien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:52
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/08; C07C6/12; C07C6/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
AN INTERACTION PROCESS WHICH COMPRISES CONTACTING, UNDER SUBSTANTIALLY ANYHYDROUS CONDITIONS, A FEED COMPRISING (A) XYLENE AND (B) A MEMBER SELECTED FROM THE CLASS CONSISTING OF TERTIARY-BUTYLBENZENE, DI-TERTIARY-BUTYLBENZENE, TRI-TERTIARY-BUTYLBENZENE AND MIXTURES THEREOF, AS ESSENTIALLY THE ONLY REACTIVE COMPONENTS, IN A MOLE RATIO OF XYLENE TO ALKYL GROUPS IN SAID BUTYLBENZENE OF AT LEAST 1, WITH AT LEAST ENOUGH LIQUID HF TO FORM A SEPARATE ACID PHASE AND WITH AT LEAST 1 MOL OF BF3 PER MOL OF ALKYL GROUPS IN SAID BUTYLBENZENE, AT A TEMPERATURE OF NOT MORE THAN ABOUT +25* C. FOR A TIME SUFFICIENT FOR THE FORMATION OF A FRACTION CONSISTING OF HIGH PURITY, 1,3,5-TERTIARY-BUTYLXYLENE, REMOVING HF AND BF3 FROM AN ACID PHASE TO RECOVER A PRODUCT HYDROCARBON MIXTURE AND RECOVERING THEREFROM A FRACTION CONSISTING OF HIGH PURITY 1,3,5-TERTIARYBUTYLXYLENE.
Claim 2
Dependent Claim
130 words
AN INTERACTION PROCESS WHICH COMPRISES CONTACTING, UNDER SUBSTANTIALLY ANYHYDROUS CONDITIONS, A FEED COMPRISING (A) XYLENE AND (B) A MEMBER SELECTED FROM THE CLASS CONSISTING OF TERTIARY-BUTYLBENZENE, DI-TERTIARY-BUTYLBENZENE, TRI-TERTIARY-BUTYLBENZENE AND MIXTURES THEREOF, AS ESSENTIALLY THE ONLY REACTIVE COMPONENTS, IN A MOLE RATIO OF XYLENE TO ALKYL GROUPS IN SAID BUTYLBENZENE OF AT LEAST 1, WITH AT LEAST ENOUGH LIQUID HF TO FORM A SEPARATE ACID PHASE AND WITH AT LEAST 1 MOL OF BF3 PER MOL OF ALKYL GROUPS IN SAID BUTYLBENZENE, AT A TEMPERATURE OF NOT MORE THAN ABOUT +25* C. FOR A TIME SUFFICIENT FOR THE FORMATION OF A FRACTION CONSISTING OF HIGH PURITY, 1,3,5-TERTIARY-BUTYLXYLENE, REMOVING HF AND BF3 FROM AN ACID PHASE TO RECOVER A PRODUCT HYDROCARBON MIXTURE AND RECOVERING THEREFROM A FRACTION CONSISTING OF HIGH PURITY 1,3,5-TERTIARYBUTYLXYLENE.
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) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |