Patent US2852576A successfully refreshed from Google Patents.
US2852576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixture of certain metal hydrides with solid acidic promoters as catalysts for aromatic alkylation
Assignee: Standard Oil Co
•
Filing: 1955-04-06
•
Granted: 1958-09-16
•
Expires: 1975-04-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Peter Fotis
- 👤 Donald L Esmay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:57
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2521/00; C07C2521/12; C07C2531/00; C07C2531/02; C07C2531/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS FOR THE NUCLEAR ALKYLATION OF A NUCLEARLY ALKYLATABLE AROMATIC HYDROCARBON, WHICH PROCESS COMPRISES CONTACTING SAID AROMATIC HYDROCARBON UNDER ALKYLATION CONDITIONS WITH AN OLEFIN IN THE PRESENCE OF A MIXTURE OF PHYSICALLY DISCRETE PARTICLES OF: (1) A HYDRIDE OF A METAL SELECTED FROM THE CLASS CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS AND (2) A COMPOSITE SOLID ACIDIC CATALYST COMPRISING A MAJOR PROPORTION BY WEIGHT OF SILICA AND A MINOR PROPORTION BY WEIGHT OF A PROMOTING METAL OXIDE SELECTED FROM THE CLASS CONSISTING OF MAGNESIA, ALUMINA, TITANIA AND ZIRCONIA, AND RECOVERING ALKYLATE THUS PRODUCED.
Claim 2
Dependent Claim
96 words
A PROCESS FOR THE NUCLEAR ALKYLATION OF A NUCLEARLY ALKYLATABLE AROMATIC HYDROCARBON, WHICH PROCESS COMPRISES CONTACTING SAID AROMATIC HYDROCARBON UNDER ALKYLATION CONDITIONS WITH AN OLEFIN IN THE PRESENCE OF A MIXTURE OF PHYSICALLY DISCRETE PARTICLES OF: (1) A HYDRIDE OF A METAL SELECTED FROM THE CLASS CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS AND (2) A COMPOSITE SOLID ACIDIC CATALYST COMPRISING A MAJOR PROPORTION BY WEIGHT OF SILICA AND A MINOR PROPORTION BY WEIGHT OF A PROMOTING METAL OXIDE SELECTED FROM THE CLASS CONSISTING OF MAGNESIA, ALUMINA, TITANIA AND ZIRCONIA, AND RECOVERING ALKYLATE THUS PRODUCED.
References Cited (Backward Citations)
US2419796A
Cited
GB613926A
Cited
US2623911A
Cited
US2728802A
Cited
US2691647A
Cited
US2754338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |