US3671602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transalkylation of aromatic hydrocarbons
Assignee: Toray Industries Inc
•
Filing: 1970-02-24
•
Granted: 1972-06-20
•
Expires: 1990-02-24
Abstract
Abstract A process for the transalkylation of aromatic hydrocarbons of nine carbon atoms which comprises heat contacting the starting feed containing at least one aromatic hydrocarbon of nine carbon atoms as a main component in the presence of hydrogen gas with a catalyst selected from the group consisting of: A. DEALKALIZED MORDENITES, B. COMPOSITIONS COMPOSED OF A DEALKALIZED MORDENITE AND AT LEAST ONE METAL SELECTED FROM METALS OF Group Ib or VIa of the Periodic Table, and C. COMPOSITIONS COMPOSED OF A DEALKALIZED MORDENITE, AN ALUMINUM FLUORIDE AND AT LEAST ONE METAL SELECTED FROM METALS OF Group Ib or VIa of Mendelejeff''s Periodic Table.
Inventors
- 👤 Takehisa Inoue
- 👤 Masaki Sato
- 👤 Takeshi Hashiguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:25
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/08; C07C6/12; C07C6/126; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/18; C07C6/123; C07C2527/00; C07C2527/06; C07C2527/125; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/18; Y; Y10; Y10S; Y10S208/00; Y10S208/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
19 words
The process of claim 1 wherein the dealkalization degree of said dealkalized mordenite is at least 60 mole percent.
Claim 2
Dependent Claim
21 words
The process of claim 1 wherein said dealkalized mordenite is a dealkalized mordenite which has been fluorinated with a fluorinating agent.
Claim 3
Dependent Claim
48 words
A process for the disproportionation of trimethylbenzene which comprises heat contacting trimethylbenzene in the presence of hydrogen gas with a catalyst composition consisting essentially of a dealkalized mordenite, an aluminum fluoride and at least one metal selected from metals of Group Ib or VIa of the Periodic Table.
Claim 4
Dependent Claim
84 words
A process for the preparation of ethylbenzene which comprising heat contacting ethyltoluene and benzene in the presence of hydrogen gas with a catalyst selected from the group consisting of: a. dealkalized mordenites, b. compositions composed of a dealkalized mordenite and at least one metal selected from metals of Group Ib or VIa of the Periodic Table, and c. compositions composed of a dealkalized mordenite, an aluminum fluoride and at least one metal selected from metals of Group Ib or VIa of Mendelejeff''s Periodic Table.
Claim 5
Dependent Claim
29 words
The process of claim 5 wherein said metal is present in the catalyst composition in an amount such that the metal content is 0.05 to 30 percent by weight.
Claim 6
Dependent Claim
29 words
The process of claim 5 wherein said metal is present in the catalyst composition in an amount such that the metal content is 0.05 to 10 percent by weight.
Claim 7
Dependent Claim
33 words
The process of claim 1 wherein said aluminum fluoride is present in said catalyst composition in an amount of 1 to 40 percent by weight based on the weight of the dealkalized mordenite.
Claim 8
Dependent Claim
33 words
The process of claim 1 wherein said aluminum fluoride is present in said catalyst composition in an amount of 5 to 20 percent by weight based on the weight of the dealkalized mordenite.
Claim 9
Dependent Claim
38 words
The process of claim 1 wherein said catalyst composition further contains a metal of Group VIII of Mendelejeff''s Periodic Table in an amount of 0.05 to 5 percent by weight based on the weight of the catalyst composition.
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |