Patent US4827064A successfully refreshed from Google Patents.
US4827064A
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High viscosity index synthetic lubricant compositions
Assignee: Mobil Oil AS
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Filing: 1988-06-23
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Granted: 1989-05-02
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Expires: 2008-06-23
Abstract
Abstract Novel lubricant compositions comprising polyalphaolefins are disclosed having high viscosity indices with low pour point. The compositions are characterized by a uniform molecular structure with low branch ratios. The invention describes a liquid lubricant composition comprising C30-C1300 hydrocarbons, said composition having a branch ratio of less than 0.19, weight average molecular weight between 300 and 45,000 number average molecular weight between 300 and 18,000, molecular weight distribution between 1 an 5 and pour point below -15 DEG C. 1-decene trimer comprising 9-methyl, 11-octylheneicosane and 11-octyldocosane is disclosed.
Inventors
- 👤 Margaret M. Wu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:21
CPC Classifications
C; C10; C10G; C10G50/00; C10G50/02; C10M; C10M143/00; C10M143/08; C10M2205/00; C10M2205/02; C10M2205/028; C10N; C10N2020/00; C10N2020/01
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
49 words
A liquid lubricant composition comprising C 30 -C 1300 hydrocarbons, said composition having a branch ratio of less than 0.19, weight average molecular weight between 300 and 45,000, number average molecular weight between 300 and 18,000, molecular weight distribution between 1 and 5 and pour point below -15° C.
Claim 2
Dependent Claim
49 words
A liquid lubricant composition comprising C 30 -C 1300 hydrocarbons, said composition having a branch ratio of less than 0.19, weight average molecular weight between 300 and 45,000, number average molecular weight between 300 and 18,000, molecular weight distribution between 1 and 5 and pour point below -15° C.
Claim 3
Dependent Claim
21 words
The composition or claim 1 wherein said hydrocarbons comprise C 30 -C 1000 hydrocarbons and molecular weight distribution of about 2.5
Claim 4
Dependent Claim
10 words
The composition of claim 1 wherein said hydrocarbons comprise alkanes.
Claim 5
Dependent Claim
10 words
The composition of claim 1 wherein said hydrocarbons comprise alkenes.
Claim 6
Dependent Claim
23 words
The composition of claim 1 having a viscosity index greater than 130 and viscosity at 100° C. between 3 cs and 750 cs.
Claim 7
Dependent Claim
27 words
The composition of claim 1 having a C 30 fraction with a branch ratio below 0.19, viscosity index greater than 130 and pour point below -45° C.
Claim 8
Dependent Claim
63 words
A liquid lubricant hydrocarbon composition comprising the polymeric residue of 1-alkenes taken from the group consisting essentially of linear C 6 -C 20 1-alkenes, said composition having a branch ratio of less than 0.19, weight average molecular weight between 300 and 45,000, number average molecular weight between 300 and 18,000, molecular weight distribution between 1 and 5 and pour point below -15° C.
Claim 9
Dependent Claim
63 words
A liquid lubricant hydrocarbon composition comprising the polymeric residue of 1-alkenes taken from the group consisting essentially of linear C 6 -C 20 1-alkenes, said composition having a branch ratio of less than 0.19, weight average molecular weight between 300 and 45,000, number average molecular weight between 300 and 18,000, molecular weight distribution between 1 and 5 and pour point below -15° C.
Claim 10
Dependent Claim
15 words
The composition of claim 7 wherein said 1-alkenes comprise preferably C 8 -C 12 alkenes.
Claim 11
Dependent Claim
16 words
The composltion of claim 7 wherein said polymeric residue comprises hydrogenated polymeric residue of said 1-alkenes.
Claim 12
Dependent Claim
14 words
The composition of claim 7 or 9 wherein said polymeric residue comprises poly 1-decene.
Claim 13
Dependent Claim
18 words
The composition of claim 10 comprising the polymeric residue of 1-decene having a molecular weight of about 422.
Claim 14
Dependent Claim
20 words
The composition of claim 11 having a viscosity index of about 134 and a pour point less than -45° C.
Claim 15
Dependent Claim
15 words
The composition of claim 7 or 9 having a viscosity index between 130 and 280.
Claim 16
Dependent Claim
23 words
A liquid lubricant hydrocarbon composition having the recurring polymeric structure ##STR4## where m is 3 to 12 and n is 5 to 500.
Claim 17
Dependent Claim
23 words
A liquid lubricant hydrocarbon composition having the recurring polymeric structure ##STR4## where m is 3 to 12 and n is 5 to 500.
Claim 18
Dependent Claim
14 words
The composition of claim 14 where m is seven and average n is fifteen.
Claim 19
Dependent Claim
20 words
The composition of claim 14 having a viscosity index greater than 130 and a pour point less than -15° C.
Claim 20
Dependent Claim
20 words
A hydrocarbon composition useful as a lubricant comprising a mixture of C 30 alkanes consisting essentially of 9-methyl,11-octylheneicosane and 11-octyldocosane.
Claim 21
Dependent Claim
20 words
A hydrocarbon composition useful as a lubricant comprising a mixture of C 30 alkanes consisting essentially of 9-methyl,11-octylheneicosane and 11-octyldocosane.
Claim 22
Dependent Claim
19 words
The composition of claim 17 wherein the mole ratio of 9-methyl,11-octylheneicosane to 11-octyldocosane is between about 1:10 and 10:1.
Claim 23
Dependent Claim
15 words
The composition of claim 18 wherein said mole ratio is preferably about 1:2 to 2:1.
Claim 24
Dependent Claim
26 words
A hydrocarbon composition useful as a lubricant comprising C 30 H 62 alkanes having a branch ratio less than 0.19 and pour point below -15° C.
Claim 25
Dependent Claim
26 words
A hydrocarbon composition useful as a lubricant comprising C 30 H 62 alkanes having a branch ratio less than 0.19 and pour point below -15° C.
Claim 26
Dependent Claim
31 words
The composition of claim 20 wherein said alkanes have a viscosity between 3 cs and 4 cs at 100° C., viscosity index greater than 130 and pour point below -45° C.
Claim 27
Dependent Claim
10 words
A composition of matter comprising 11-octyldocosane having the structure, ##STR5##
Claim 28
Dependent Claim
10 words
A composition of matter comprising 11-octyldocosane having the structure, ##STR5##
Claim 29
Dependent Claim
5 words
A lubricant composition comprising 11-octyldocosane.
Claim 30
Dependent Claim
5 words
A lubricant composition comprising 11-octyldocosane.
Claim 31
Dependent Claim
60 words
A liquid lubricant composition comprising the product of the oligomerization of C 6 to C 20 alpha-olefin feedstock, or mixtures thereof, under oligomerization conditions in contact with a reduced valence state Group VIB metal catalyst on porous support, said lubricant having a branch ratio less than 0.19, viscosity index greater than 130 and a pour point less than -15° C.
Claim 32
Dependent Claim
60 words
A liquid lubricant composition comprising the product of the oligomerization of C 6 to C 20 alpha-olefin feedstock, or mixtures thereof, under oligomerization conditions in contact with a reduced valence state Group VIB metal catalyst on porous support, said lubricant having a branch ratio less than 0.19, viscosity index greater than 130 and a pour point less than -15° C.
Claim 33
Dependent Claim
47 words
The composition of claim 24 wherein said oligomerization conditions comprise temperature between 90 - 250° C. and feedstock to catalyst weight ratio between 10:1 and 30:1; said catalyst comprises CO reduced CrO 3 and said support comprises silica having a pore size of at least 40 Angstroms.
Claim 34
Dependent Claim
17 words
The composition of claim 24 wherein said alpha-olefin is selected from 1-octene, 1-decene, 1-dodecene, and mixtures thereof.
Claim 35
Dependent Claim
10 words
The composition of claim 24 wherein said olefin is 1-decene.
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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) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |