Patent US2819323A successfully refreshed from Google Patents.
US2819323A
Expired / Lapsed
US
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Tertiary butyltoluene production
Assignee: Standard Oil Co
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Filing: 1953-11-27
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Granted: 1958-01-07
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Expires: 1973-11-27
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 20:23
CPC Classifications
C; C07; C07C; C07C15/00; C07C15/02; C07C6/00; C07C6/08; C07C6/12; C07C6/126; C07C7/00; C07C7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
AN INTERACTION PROCESS WHICH COMPRISES CONTACTING UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS, A FEED COMPRISING ESSENTIALLY (A) TOLUENE AND (B) A MEMBER SELECTED FROM THE CLASS CONSISTING OF T-BUTYLBENZENE, DI-T-BUTYLBENZENE TRI-T-BUTYLBENZENE AND MIXTURE THEREOF, AS ESSENTIALLY THE ONLY REACTIVE COMPONENTS, IN A MOL RATIO OF TOLUENE TO T-BUTYL GROUPS IN SAID BUTYLBENZENE OF AT LEAST ABOUT 1, WITH BETWEEN ABOUT 3 AND 50 MOLS OF LIQUID HF PER MOL OF ALKYLBENZENE FED AND AT LEAST ABOUT 1 MOL OF BF3 PER MOL OF T-BUTYL 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 ESSENTIALLY OF META-T-BUTYLTOLUENE, CONTRACTING THE ACID PHASE WITH AT LEAST ABOUT 1 MOL OF A DISPLACER PER MOL OF T-BUTYLTOLUENES PRESENT IN SAID ACID PHASE AND SUBSTAN-
Claim 2
Dependent Claim
133 words
AN INTERACTION PROCESS WHICH COMPRISES CONTACTING UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS, A FEED COMPRISING ESSENTIALLY (A) TOLUENE AND (B) A MEMBER SELECTED FROM THE CLASS CONSISTING OF T-BUTYLBENZENE, DI-T-BUTYLBENZENE TRI-T-BUTYLBENZENE AND MIXTURE THEREOF, AS ESSENTIALLY THE ONLY REACTIVE COMPONENTS, IN A MOL RATIO OF TOLUENE TO T-BUTYL GROUPS IN SAID BUTYLBENZENE OF AT LEAST ABOUT 1, WITH BETWEEN ABOUT 3 AND 50 MOLS OF LIQUID HF PER MOL OF ALKYLBENZENE FED AND AT LEAST ABOUT 1 MOL OF BF3 PER MOL OF T-BUTYL 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 ESSENTIALLY OF META-T-BUTYLTOLUENE, CONTRACTING THE ACID PHASE WITH AT LEAST ABOUT 1 MOL OF A DISPLACER PER MOL OF T-BUTYLTOLUENES PRESENT IN SAID ACID PHASE AND SUBSTAN-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |