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US4962249A
Expired / Lapsed
US
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High VI lubricants from lower alkene oligomers
Assignee: Mobil Oil AS
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Filing: 1990-02-15
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Granted: 1990-10-09
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Expires: 2010-02-15
Abstract
Abstract Near linear higher olefinic hydrocarbons produced by the oligomerization of lower olefins using surface deactivated zeolite catalyst can be converted to a mixture comprising slightly branched and linear higher alpha olefins. These alpha olefins are oligomerized to lubricant grade hydrocarbons in contact with cationic, Ziegler or coordination catalyst. Oligomerization of the aforementioned alpha olefins using reduced valence state Group VIB metal oxide catalyst on porous support provides a hydrocarbon lubricant with a viscosity index of greater than 130 at 100 DEG C.
Inventors
- 👤 Catherine S. H. Chen
- 👤 Margaret M. S. Wu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:45
CPC Classifications
C; C10; C10M; C10M169/00; C10M169/04; C10M169/041; C10G; C10G50/00; C10G50/02; C10M2203/00; C10M2203/02; C10M2203/0206; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/0245; C10M2205/026; C10M2205/0265; C10M2205/028; C10N; C10N2020/00; C10N2020/01
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
127 words
A process for the production of hydrocarbon lubricant fluids having high viscosity index, comprising; contacting a mixture comprising slightly branched and linear higher alpha olefins under oligomerization conditions with a reduced valence state Group VIB metal catalyst on porous support; wherein said higher alpha olefins comprise the olefin metathesis reaction product of slightly branched higher olefinic hydrocarbons with lower olefinic hydrocarbons in contact with metathesis catalyst, and said higher olefinic hydrocarbons comprise the oligomerization product of lower alkene oligomerized in contact with surface deactivated, acidic, medium pore, shape selective metallosilicate catalyst under oligomerization conditions; and separating the higher alpha olefins oligomerization reaction product to provide said lubricant having a branch index above 0.20, a viscosity index greater than 130 and a pour point less than -15° C.
Claim 2
Dependent Claim
127 words
A process for the production of hydrocarbon lubricant fluids having high viscosity index, comprising; contacting a mixture comprising slightly branched and linear higher alpha olefins under oligomerization conditions with a reduced valence state Group VIB metal catalyst on porous support; wherein said higher alpha olefins comprise the olefin metathesis reaction product of slightly branched higher olefinic hydrocarbons with lower olefinic hydrocarbons in contact with metathesis catalyst, and said higher olefinic hydrocarbons comprise the oligomerization product of lower alkene oligomerized in contact with surface deactivated, acidic, medium pore, shape selective metallosilicate catalyst under oligomerization conditions; and separating the higher alpha olefins oligomerization reaction product to provide said lubricant having a branch index above 0.20, a viscosity index greater than 130 and a pour point less than -15° C.
Claim 3
Dependent Claim
21 words
The process of claim 1 wherein said mixture is oligomerized in contact with CO reduced chromium oxide catalyst on silica support.
Claim 4
Dependent Claim
16 words
The process of claim 1 wherein said mixture comprises predominantly C 9 -C 18 alpha olefins.
Claim 5
Dependent Claim
17 words
The process of claim 1 wherein said lower olefinic hydrocarbons comprise C 2 -C 4 1 -alkenes.
Claim 6
Dependent Claim
10 words
The process of claim 4 wherein said hydrocarbons comprise ethylene.
Claim 7
Dependent Claim
26 words
The process of claim 1 wherein said slightly branched higher olefinic hydrocarbons comprise C 11 + hydrocarbons having about 1-2 methyl branches per 12 carbon atoms.
Claim 8
Dependent Claim
19 words
The process of claim 1 wherein said lubricant comprises slightly branched C 30 + disubstituted and trisubstituted olefinic hydrocarbon.
Claim 9
Dependent Claim
13 words
The process of claim 1 including the further step of hydrogenating said lubricant.
Claim 10
Dependent Claim
17 words
The process of claim 1 wherein said metathesis catalyst includes supported oxides of rhenium, molybdenum or tungsten.
Claim 11
Dependent Claim
11 words
The process of claim 9 further including tetraalkyl tin as co-catalyst.
Claim 12
Dependent Claim
18 words
The process of claim 9 wherein said catalyst comprises aluminum oxide supported rhenium oxide and tetra methyl tin.
Claim 13
Dependent Claim
21 words
The process of claim 1 wherein said lower alkene comprises propylene and said metallosilicate catalyst includes surface deactivated ZSM-5 or ZSM-23.
Claim 14
Dependent Claim
111 words
An integrated process for the production of liquid hydrocarbon fluid, comprising; (a) contacting a feedstock comprising lower olefin with surface deactivated, acidic, medium pore, shape selective metallosilicate catalyst under oligomerization conditions to provide a product comprising a mixture of slightly branched higher olefins; (b) reacting said mixture with ethylene in contact with olefin metathesis catalyst under metathesis conditions and separating a metathesis product comprising slightly branched and linear higher alpha olefins; (c) oligomerizing said metathesis product in contact with a reduced valence state Group VIB metal catalyst on porous support to provide said lubricant having a viscosity above about 2 cS at 100° C. and a viscosity index above about 130.
Claim 15
Dependent Claim
111 words
An integrated process for the production of liquid hydrocarbon fluid, comprising; (a) contacting a feedstock comprising lower olefin with surface deactivated, acidic, medium pore, shape selective metallosilicate catalyst under oligomerization conditions to provide a product comprising a mixture of slightly branched higher olefins; (b) reacting said mixture with ethylene in contact with olefin metathesis catalyst under metathesis conditions and separating a metathesis product comprising slightly branched and linear higher alpha olefins; (c) oligomerizing said metathesis product in contact with a reduced valence state Group VIB metal catalyst on porous support to provide said lubricant having a viscosity above about 2 cS at 100° C. and a viscosity index above about 130.
Claim 16
Dependent Claim
32 words
The process of claim 13 including the further step of separating step (a) product to provide a mixture for step (b) comprising C 8 + slightly branched and linear higher alpha olefins;
Claim 17
Dependent Claim
25 words
The process of claim 13 wherein said lubricant has a branch index above 0.20 and contains less than 2.5 methyl groups per 12 carbon atoms.
Claim 18
Dependent Claim
21 words
The process of claim 13 wherein said lower olefin comprises propylene and said metallosilicate catalyst includes surface deactivated ZSM-5 or ZSM-23.
Claim 19
Dependent Claim
14 words
The process of claim 13 wherein said ethylene comprises a stoichiometric excess of ethylene.
Claim 20
Dependent Claim
17 words
The process of claim 13 wherein said metathesis catalyst includes supported oxides of rhenium, molybdenum or tungsten.
Claim 21
Dependent Claim
11 words
The process of claim 18 further including tetraalkyl tin as co-catalyst.
Claim 22
Dependent Claim
22 words
The process of claim 13 wherein said metathesis product is oligomerized in contact with CO reduced chromium oxide catalyst on silica support.
References Cited (Backward Citations)
US3883606A
Cited
US4180524A
Cited
US4431855A
Cited
US4517401A
Cited
US4504694A
Cited
US4499328A
Cited
US4547617A
Cited
US4542249A
Cited
US4665245A
Cited
US4827073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-08 | 1994-04-09 | 1994-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-08 | 1998-04-09 | 1998-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-08 | 2002-04-09 | 2002-10-09 | $7700.00 | Window Closed / Lapsed |