US4480142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic alkylation
Assignee: Phillips Petroleum Co
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Filing: 1982-11-04
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Granted: 1984-10-30
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Expires: 2002-11-04
Abstract
Abstract The alkylation of aromatic compounds with olefins can be conducted more efficiently in the presence of certain catalysts.
Inventors
- 👤 Raymond L. Cobb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:59
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/68; C07C2521/00; C07C2521/16; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1213
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
87 words
A process for the selective production of 2-alkyl-substituted polycyclic aromatic compounds comprising contacting one or more aromatic reactants of the general formula ##STR3## where n can equal 0 or any integer from about 1 to about 4 with at least one 1-olefin and a mole ratio of olefin to aromatic compound ranging from about 0.2:1 to about 2.5:1 at moderate temperatures between about 65° and 135° C. in the presence of a catalyst selected from the group consisting of BF 3 complexes, acid-treated clays, and mixtures thereof.
Claim 2
Dependent Claim
87 words
A process for the selective production of 2-alkyl-substituted polycyclic aromatic compounds comprising contacting one or more aromatic reactants of the general formula ##STR3## where n can equal 0 or any integer from about 1 to about 4 with at least one 1-olefin and a mole ratio of olefin to aromatic compound ranging from about 0.2:1 to about 2.5:1 at moderate temperatures between about 65° and 135° C. in the presence of a catalyst selected from the group consisting of BF 3 complexes, acid-treated clays, and mixtures thereof.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein the molar ratio of 1-olefin to aromatic reactants is between about 0.2:1 and 2.0:1.
Claim 4
Dependent Claim
16 words
The process of claim 2 wherein the catalyst is BF 3 .H 3 PO 4 .
Claim 5
Dependent Claim
18 words
The process of claim 3 wherein the temperature of alkylation is about 70° C. to about 80° C.
Claim 6
Dependent Claim
13 words
The process of claim 1 wherein the catalyst is an acid-treated montmorillonite clay.
Claim 7
Dependent Claim
16 words
The process of claim 5 wherein the temperature is about 75° C. to about 125° C.
Claim 8
Dependent Claim
10 words
The process of claim 3 wherein the olefin is propylene.
Claim 9
Dependent Claim
11 words
The process of claim 7 wherein the aromatic reactant is biphenyl.
Claim 10
Dependent Claim
18 words
The process of claim 3 wherein the temperature of reaction is about 70° C. to about 75° C.
Claim 11
Dependent Claim
18 words
The process of claim 5 wherein the temperature of reaction is about 100° C. to about 125° C.
Claim 12
Dependent Claim
12 words
The process of claim 8 wherein the major reaction product comprises 2-alkylbiphenyls.
Claim 13
Dependent Claim
16 words
The process of claim 5 wherein the aromatic reactant is biphenyl and the 1-olefin is propylene.
Claim 14
Dependent Claim
12 words
The process of claim 12 wherein the major reaction product comprises 2-alkylbiphenyls.
References Cited (Backward Citations)
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US2564488A
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US3435091A
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US3849507A
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US4316997A
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US4165440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-30 | 1988-04-30 | 1988-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-30 | 1992-04-30 | 1992-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-30 | 1996-04-30 | 1996-10-30 | $7700.00 | Window Closed / Lapsed |