US4510342A
Expired / Lapsed
US
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High viscosity index synthetic oils and synthesis thereof
Assignee: Standard Oil Co
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Filing: 1982-12-29
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Granted: 1985-04-09
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Expires: 2002-12-29
Abstract
Abstract A method for preparing synthetic oils characterized by a high viscosity index and prepared from 1-olefin is described. The method comprises polymerizing a 1-olefin or a mixture of 1-olefins in the presence of (a) at least one transition metal halide catalyst, (b) at least one alkyl aluminum compound containing up to about 15 carbon atoms in each alkyl group and up to about 40 carbon atoms per molecule as a co-catalyst, and (c) a saturated alkyl fluoride. The homopolymers and copolymers prepared in accordance with the method of the invention generally are characterized by a high viscosity index such as between about 100 to 300. The homopolymers and copolymers are useful as synthetic lubricants and as additives to synthetic or mineral oil lubricants for modifying the viscosity index characteristics of the lubricants.
Inventors
- 👤 Janie K. Currie
- 👤 J. Robert Mooney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:21
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/26; B01J31/38; B01J31/02; B01J31/0231; B01J31/12; B01J31/14; B01J31/143; C; C08; C08F; C08F10/00; C08F10/04; C08F10/06; C10; C10G; C10G50/00; C10G50/02; B01J2231/00; B01J2231/10; B01J2231/12; C08F110/00; C08F110/04; C08F110/06
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
68 words
A process for preparing high viscosity index synthetic oils from 1-olefins which comprises polymerizing a 1-olefin or mixture of 1-olefins in the presence of (a) at least one transition metal halide catalyst, (b) at least one alkyl aluminum compound containing up to about 15 carbon atoms in each alkyl group and up to about 40 carbon atoms per molecule as a co-catalyst, and (c) a saturated alkyl fluoride.
Claim 2
Dependent Claim
68 words
A process for preparing high viscosity index synthetic oils from 1-olefins which comprises polymerizing a 1-olefin or mixture of 1-olefins in the presence of (a) at least one transition metal halide catalyst, (b) at least one alkyl aluminum compound containing up to about 15 carbon atoms in each alkyl group and up to about 40 carbon atoms per molecule as a co-catalyst, and (c) a saturated alkyl fluoride.
Claim 3
Dependent Claim
10 words
The process of claim 1 wherein the olefin is propylene.
Claim 4
Dependent Claim
11 words
The process of claim 1 wherein the transition metal is titanium.
Claim 5
Dependent Claim
21 words
The process of claim 1 wherein the alkyl fluoride is a lower alkyl fluoride containing from 2 to 4 carbon atoms.
Claim 6
Dependent Claim
20 words
The process of claim 1 wherein the alkyl aluminum compound is a trialkyl aluminum compound or an alkyl aluminum halide.
Claim 7
Dependent Claim
64 words
The process for preparing high viscosity index synthetic oils from propylene which comprises polymerizing propylene in the presence of (a) at least one titanium halide catalyst, (b) at least one alkyl aluminum halide containing up to about 4 carbon atoms in each alkyl group as a co-catalyst, and (c) a saturated alkyl fluoride containing up to about 4 carbon atoms in the alkyl group.
Claim 8
Dependent Claim
64 words
The process for preparing high viscosity index synthetic oils from propylene which comprises polymerizing propylene in the presence of (a) at least one titanium halide catalyst, (b) at least one alkyl aluminum halide containing up to about 4 carbon atoms in each alkyl group as a co-catalyst, and (c) a saturated alkyl fluoride containing up to about 4 carbon atoms in the alkyl group.
Claim 9
Dependent Claim
20 words
The process of claim 6 wherein the titanium halide catalyst comprises a mixture of titanium halide and an aluminum halide.
Claim 10
Dependent Claim
12 words
The process of claim 6 wherein the alkyl fluoride is ethyl fluoride.
Claim 11
Dependent Claim
20 words
The process of claim 7 wherein the titanium catalyst is a mixture of a titanium chloride and an aluminum chloride.
Claim 12
Dependent Claim
15 words
The process of claim 6 wherein the alkyl aluminum halide is a dialkyl aluminum chloride.
Claim 13
Dependent Claim
29 words
The process of claim 6 wherein the polymerization reaction is conducted in the presence of a non-polar diluent and at a temperature of from about -50° to 100° C.
Claim 14
Dependent Claim
16 words
The process of claim 6 wherein the titanium halide catalyst is supported on an inorganic material.
Claim 15
Dependent Claim
74 words
A process for preparing a high viscosity index synthetic oils from propylene which comprises polymerizing propylene in the presence of (a) a catalyst comprising a mixture of a titanium halide and an aluminum halide (b) at least one alkyl aluminum compound containing up to 4 carbon atoms in each alkyl group, and (c) ethyl fluoride at a temperature of from about -50° C. to about 100° C. in the presence of a non-polar diluent.
Claim 16
Dependent Claim
74 words
A process for preparing a high viscosity index synthetic oils from propylene which comprises polymerizing propylene in the presence of (a) a catalyst comprising a mixture of a titanium halide and an aluminum halide (b) at least one alkyl aluminum compound containing up to 4 carbon atoms in each alkyl group, and (c) ethyl fluoride at a temperature of from about -50° C. to about 100° C. in the presence of a non-polar diluent.
Claim 17
Dependent Claim
20 words
The process of claim 13 wherein the catalyst comprises titanium trichloride and aluminum trichloride in the mole ratio of 3:1.
Claim 18
Dependent Claim
14 words
The process of claim 13 wherein the alkyl aluminum compound is diethyl aluminum chloride.
References Cited (Backward Citations)
GB838227A
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US3413376A
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US3655812A
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FR2217064A1
Cited
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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) | 1988-04-08 | 1988-10-08 | 1989-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-08 | 1992-10-08 | 1993-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-08 | 1996-10-08 | 1997-04-09 | $7700.00 | Window Closed / Lapsed |