US4045507A
Expired / Lapsed
US
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Method of oligomerizing 1-olefins
Assignee: Chevron USA Inc
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Filing: 1975-11-20
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Granted: 1977-08-30
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Expires: 1995-11-20
Abstract
Abstract The trimer to tetramer ratio of an alpha-olefin oligomer is varied over a significant range in a continuous, multi-stage alpha-olefin oligomerization process including a series of at least two flow-through tank reactors by controlling the amount of conversion taking place in each stage. The multi-stage process is used to prepare various poly(l-decene) oligomer mixtures having different oligomer proportions for use as synthetic lubricants.
Inventors
- 👤 Barrett L. Cupples
- 👤 William J. Heilman
- 👤 A. Norman Kresge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:30
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/20; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1213; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/921; Y10S585/924; Y10S585/925; Y10S585/926
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
128 words
The continuous process for polymerizing a l-olefin to an oligomer mixture including trimer and tetramer which comprises continuously introducing a l-olefin having from about five to about 14 carbon atoms or a mixture thereof into the first of a series of two or more tank reactors in the presence of a catalytic amount of boron trifluoride and a co-catalyst that complexes with boron trifluoride with mixing therein to provide a substantially homogeneous reaction mixture and continuously removing a partially oligomerized product stream from the first of said tank reactors and introducing said product stream into the second of said tank reactors for further conversion of said l-olefin to oligomer product, said series of tank reactors being maintained at a same or different temperature suitable for the oligomerization reaction.
Claim 2
Dependent Claim
128 words
The continuous process for polymerizing a l-olefin to an oligomer mixture including trimer and tetramer which comprises continuously introducing a l-olefin having from about five to about 14 carbon atoms or a mixture thereof into the first of a series of two or more tank reactors in the presence of a catalytic amount of boron trifluoride and a co-catalyst that complexes with boron trifluoride with mixing therein to provide a substantially homogeneous reaction mixture and continuously removing a partially oligomerized product stream from the first of said tank reactors and introducing said product stream into the second of said tank reactors for further conversion of said l-olefin to oligomer product, said series of tank reactors being maintained at a same or different temperature suitable for the oligomerization reaction.
Claim 3
Dependent Claim
38 words
The continuous process for polymerizing a l-olefin in accordance with claim 1 in which the l-olefin is l-decene or a mixture containing l-decene and up to about 50 mol percent of l-octene or l-dodecene or a mixture thereof.
Claim 4
Dependent Claim
47 words
The continuous process for polymerizing a l-olefin in accordance with claim 2 in which the ratio of the percent conversion of l-olefin to oligomer in the first reactor to the percent conversion of l-olefin to oligomer in the subsequent reactors is between about 90:10 and about 15:85.
Claim 5
Dependent Claim
23 words
The continuous process for polymerizing a l-olefin in accordance with claim 3 in which said ratio is between about 80:20 and about 30:70.
Claim 6
Dependent Claim
39 words
The continuous process for polymerizing a l-olefin in accordance with claim 2 in which the total combined conversion of l-olefin to oligomer is between about 50 percent and about 100 percent of the l-olefin fed to said first reactor.
Claim 7
Dependent Claim
28 words
The continuous process for polymerizing a l-olefin in accordance with claim 2 in which said catalyst is an aliphatic mono-alcohol having from one to about 10 carbon atoms.
Claim 8
Dependent Claim
23 words
The continuous process for polymerizing a l-olefin in accordance with claim 6 in which said first reactor is pressured with boron trifluoride gas.
Claim 9
Dependent Claim
37 words
The continuous process for polymerizing a l-olefin in accordance with claim 2 in which the ratio of the volume of the first reactor to the volume of each succeeding reactor is between about 5:1 and about 1:10.
Claim 10
Dependent Claim
37 words
The continuous process for polymerizing a l-olefin in accordance with claim 2 in which the ratio of the volume of the first reactor to the volume of each succeeding reactor is between about 2:1 and about 1:5.
Claim 11
Dependent Claim
84 words
The continuous process for polymerizing l-decene to an oligomer mixture including trimer and tetramer which comprises continuously introducing l-decene into a first tank reactor in the presence of a catalytic amount of boron trifluoride complex and free boron trifluoride with mixing therein to provide a substantially homogeneous reacting mixture and continuously removing a partially oligomerized product stream from said first tank reactor and introducing said product stream into a second tank reactor for further reaction at a temperature in both reactors suitable for oligomerization.
Claim 12
Dependent Claim
84 words
The continuous process for polymerizing l-decene to an oligomer mixture including trimer and tetramer which comprises continuously introducing l-decene into a first tank reactor in the presence of a catalytic amount of boron trifluoride complex and free boron trifluoride with mixing therein to provide a substantially homogeneous reacting mixture and continuously removing a partially oligomerized product stream from said first tank reactor and introducing said product stream into a second tank reactor for further reaction at a temperature in both reactors suitable for oligomerization.
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) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |