US4446329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylation or aromatic compounds
Assignee: EIDP Inc
•
Filing: 1983-03-24
•
Granted: 1984-05-01
•
Expires: 2003-03-24
Abstract
Abstract Improved catalytic process for the alkylation of aromatic substrates, the improved process characterized in that the catalyst is a metal cation salt of a perfluorosulfonic acid polymer having an equivalent weight of about 500 to about 20,000, the metal cation having a log K 11 greater than -10.
Inventors
- 👤 Francis J. Waller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:55
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2531/00; C07C2531/02; C07C2531/06; C07C2531/08; C07C2531/10
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
58 words
Improved catalytic process for the alkylation of aromatic substrates, the improved process characterized in that it is carried out at at least 200° C. and the catalyst is a metal cation salt of a perfluorosulfonic acid polymer having an equivalent weight of about 500 to about 20,000, the metal cation having a log K 11 greater than -10.
Claim 2
Dependent Claim
58 words
Improved catalytic process for the alkylation of aromatic substrates, the improved process characterized in that it is carried out at at least 200° C. and the catalyst is a metal cation salt of a perfluorosulfonic acid polymer having an equivalent weight of about 500 to about 20,000, the metal cation having a log K 11 greater than -10.
Claim 3
Dependent Claim
27 words
Process of claim 1 wherein the alkylating agent is selected from alkenes, alkadienes and alkynes and the substrate is selected from mono-, di-, and tricyclic aromatic compounds.
Claim 4
Dependent Claim
28 words
Process of claim 1 wherein the ratio of alkylating agent to metal cation salt of perfluorosulfonic acid polymer is, on a molar basis, about 25:1 to about 500:1.
Claim 5
Dependent Claim
13 words
Process of claim 3 wherein the ratio is about 50:1 to about 200:1.
Claim 6
Dependent Claim
12 words
Process of claim 1 carried out in the presence of a solvent.
Claim 7
Dependent Claim
11 words
Process of claim 5 wherein the solvent is the aromatic substrate.
Claim 8
Dependent Claim
16 words
Process of claim 1 which is carried out at about 200° C. to about 300° C.
Claim 9
Dependent Claim
25 words
Process of claim 1 wherein the alkylating agent is an alkene of 2-6 carbon atoms and the aromatic substrate is benzene or a substituted benzene.
Claim 10
Dependent Claim
22 words
Process of claim 1 wherein the ratio of substrate to alkylating agent is, on a molar basis, about 1:1 to about 20:1.
Claim 11
Dependent Claim
22 words
Process of claim 1 wherein the ratio of substrate to alkylating agent is, on a molar basis, about 3:1 to about 12:1.
Claim 12
Dependent Claim
16 words
Process of claim 1 wherein the alkylating agent is ethylene and the aromatic substrate is benzene.
Claim 13
Dependent Claim
42 words
Process of claim 11 wherein the ratio of substrate to alkylating agent is, on a molar basis, about 3:1 to about 12:1 and the metal cation is selected from Cr 3+ , Sn 2+ , Al 3+ , and Fe 3+ .
Claim 14
Dependent Claim
20 words
Process of claim 1 wherein the ratio of substrate to alkylating agent is, on a molar basis, less than 1:1.
Claim 15
Dependent Claim
24 words
Process of claim 1 wherein the metal cation is selected from Cr 3+ , Sn 2+ , Al 3+ , and Fe 3+ .
Claim 16
Dependent Claim
22 words
Process of claim 1 wherein the perfluorosulfonic acid polymer contains no more than 5 weight percent of H, Cl or COOH substituents.
References Cited (Backward Citations)
US3116346A
Cited
US3479322A
Cited
US4316997A
Cited
US4022847A
Cited
US4038213A
Cited
US4041090A
Cited
US4060565A
Cited
US4287376A
Cited
US4356318A
Cited
GB2090856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |