US4301316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparing phenylalkanes
Assignee: Mobil Oil AS
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Filing: 1979-11-20
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Granted: 1981-11-17
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Expires: 1999-11-20
Abstract
Abstract A process for the selective alkylation of substituted or unsubstituted benzene compounds with relatively long chain length alkylating agents to produce phenylalkanes having an improved yield of the more external phenyl isomers. The reaction is carried out in the presence of crystalline zeolite catalysts, such as ZSM-4, ZSM-20, ZSM-38, mazzite, Linde Type L and zeolite Beta.
Inventors
- 👤 Lewis B. Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:02
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/70
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
118 words
A process for the selective alkylation of aromatic compounds with relatively long chain length alkylating agents to selectively produce 2-phenylalkanes; said alkylating agents comprising aliphatic or aromatic organic compounds having one or more available reactive alkyl groups of at least five carbons in the hydrocarbon chain; said process comprising contacting said aromatic compound with said alkylating agent in the presence of a crystalline zeolite catalyst, at a temperature of between about 50° C. and about 500° C. and a pressure withn the approximate range of 2.5×10 4 N/m 2 to 2.5×10 7 N/m 2 ; said crystalline zeolite catalyst being chosen from the group consisting of: mazzite, zeolite Beta, ZSM-20, ZSM-38 and synthetic and naturally occurring isotypes thereof.
Claim 2
Dependent Claim
118 words
A process for the selective alkylation of aromatic compounds with relatively long chain length alkylating agents to selectively produce 2-phenylalkanes; said alkylating agents comprising aliphatic or aromatic organic compounds having one or more available reactive alkyl groups of at least five carbons in the hydrocarbon chain; said process comprising contacting said aromatic compound with said alkylating agent in the presence of a crystalline zeolite catalyst, at a temperature of between about 50° C. and about 500° C. and a pressure withn the approximate range of 2.5×10 4 N/m 2 to 2.5×10 7 N/m 2 ; said crystalline zeolite catalyst being chosen from the group consisting of: mazzite, zeolite Beta, ZSM-20, ZSM-38 and synthetic and naturally occurring isotypes thereof.
Claim 3
Dependent Claim
23 words
A process as described in claim 1 wherein said alkyl groups have between six and twenty carbon atoms in the linear hydrocarbon chain.
Claim 4
Dependent Claim
13 words
A process as described in claim 1 wherein said aromatic compound is benzene.
Claim 5
Dependent Claim
22 words
A process as described in claim 1 wherein said aromatic compound comprises a benzene ring having from one to two substituents thereon.
Claim 6
Dependent Claim
39 words
A process as described in claim 1 wherein said temperature is within the approximate range of from 100° C. to 350° C. and said pressure is between about 10 5 N/m 2 and about 5×10 6 N/m 2 .
Claim 7
Dependent Claim
16 words
A process as described in claim 1 wherein said zeolite has the crystal structure of mazzite.
Claim 8
Dependent Claim
17 words
A process as described in claim 1 wherein said zeolite has the crystal structure of zeolite Beta.
Claim 9
Dependent Claim
16 words
A process as described in claim 1 wherein said zeolite has the crystal structure of ZSM-20.
Claim 10
Dependent Claim
16 words
A process as described in claim 1 wherein said zeolite has the crystal structure of ZSM-38.
Claim 11
Dependent Claim
15 words
A process as described in claim 1 wherein said zeolite is steamed prior to use.
Claim 12
Dependent Claim
22 words
A process as described in claim 1, 6, 7, 8, 9 or 10 wherein said zeolite is combined with a binder therefor.
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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) | 1984-11-16 | 1985-05-18 | 1985-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-16 | 1989-05-18 | 1989-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-16 | 1993-05-18 | 1993-11-17 | $7700.00 | Window Closed / Lapsed |