Patent DE752704C successfully refreshed from Google Patents.
US4943383A
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US
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Novel lubricant epoxides
Assignee: Mobil Oil AS
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Filing: 1988-06-23
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Granted: 1990-07-24
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Expires: 2008-06-23
Abstract
Abstract Epoxy functionalized polyalpha-olefin lubricants compositions are prepared with superior properties by epoxidizing the olefinic bond of oligomers prepare by oligomerizing C6-C20 alpha-olefins with reduced valence state chromium catalyst on silica support. The invention encompasses a product of reaction made by epoxidizing C30+ polyalpha-olefin oligomeric hydrocarbon lubricant having a branch ratio of less than 0.19 and pour point below -15 DEG C. in the presence of an epoxidizing amount of an epoxidizing agent wherein said product comprises a mixture of 2-dialkyl oxirane and 1,2-dialkyl oxirane having between an average of C30 and C1000 carbon atoms, said mixture having a branch ratio of less than 0.19 and pour point below -15 DEG C. The invention further encompasses blends and additive compositions of the novel epoxidizing polyalpha-olefins.
Inventors
- 👤 Noyes L. Avery
- 👤 Andrew G. Horodysky
- 👤 Derek A. Law
- 👤 Leslie R. Rudnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:24
CPC Classifications
C; C10; C10M; C10M143/00; C10M143/18; C08; C08F; C08F8/00; C08F8/08; C10M107/00; C10M107/02; C10M107/10; C10M107/18; C10M111/00; C10M111/04; C10M143/08; C10M2205/00; C10M2205/02; C10M2205/028; C10M2205/0285; C10M2205/12; C10M2205/123; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/04; C10M2207/042; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/084; C10M2221/00; C10M2221/04; C10M2221/041; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/047; C10M2225/00; C10M2225/02; C10M2227/00; C10M2227/06; C10M2227/061; C10N; C10N2020/00; C10N2020/01; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/08; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
68 words
A product of reaction made by epoxidizing C 30 + polyalpha-olefin oligomeric hydrocarbon lubricant having a branch ratio of less than 0.19 and pour point below -15° C. in the presence of an epoxidizing amount of an epoxidizing agent wherein the product has a weight average molecular weight between 300 and 150,000 number average molecular weight between 300 and 30,000 and molecular weight distribution between 1 and 5.
Claim 2
Dependent Claim
68 words
A product of reaction made by epoxidizing C 30 + polyalpha-olefin oligomeric hydrocarbon lubricant having a branch ratio of less than 0.19 and pour point below -15° C. in the presence of an epoxidizing amount of an epoxidizing agent wherein the product has a weight average molecular weight between 300 and 150,000 number average molecular weight between 300 and 30,000 and molecular weight distribution between 1 and 5.
Claim 3
Dependent Claim
47 words
The product of reaction of claim 1 wherein said product comprises a mixture of 2-dialkyl oxirane and 1,2-dialkyl oxirane having between an average of C 30 and C 1000 carbon atoms, said mixture having a branch ratio of less than 0.19 and pour point below -15° C.
Claim 4
Dependent Claim
16 words
The product of claim 2 wherein said 2-dialkyl oxirane comprises at least 10% of said mixture.
Claim 5
Dependent Claim
19 words
The product of claim 2 wherein the ratio of carbon atoms to oxygen is at least 30 to 1.
Claim 6
Dependent Claim
29 words
The product of claim 2 having a viscosity between 3 cs and 500 cs, VI between 130 and 280 and a pour point between -15° C. and -70° C.
Claim 7
Dependent Claim
12 words
The product of claim 2 wherein said oxirane is C 30 oxirane.
Claim 8
Dependent Claim
45 words
The product of claim 1 wherein said polyalphaolefin comprises the unsaturated oligomeric or co-oligomeric residue of the oligomerization of C 6 -C 20 1-alkene in contact with reduced valence state chromium oxide catalyst on silica support at a temperature between 90° C. and 250° C.
Claim 9
Dependent Claim
62 words
The product of claim 7 wherein said catalyst has been treated by oxidation at a temperature of 200° C. to 900° C. in the presence of an oxidizing gas and then by treatment with a reducing agent at a temperature and for a time sufficient to reduce said catalyst to obtain unsaturated oligomers having a branch ratio of less than about 0.19.
Claim 10
Dependent Claim
33 words
The product of claim 7 wherein said reducing agent is CO, H 2 , NH 3 , H 2 S, CS 2 , CH 3 SCH 3 and CH 3 SSCH 3 .
Claim 11
Dependent Claim
19 words
The product of claim 7 wherein the support is silica having a pore size of at least 40 Angstroms.
Claim 12
Dependent Claim
17 words
The product of claim 6 wherein said 1-alkene is selected from 1-octene, 1-decene, 1-dodecene, and mixtures thereof.
Claim 13
Dependent Claim
10 words
The product of claim 11 wherein said olefin is 1-decene.
Claim 14
Dependent Claim
21 words
The product of claim 1 wherein said epoxidizing agent is an aliphatic or aryl percarboxylic acid, hydrogen peroxide, or mixtures thereof.
Claim 15
Dependent Claim
41 words
A lubricant composition comprising a mixture of 2-dialkyl oxirane and 1,2-dialkyl oxirane having between an average of 30 and 1000 carbon atoms, a branch ratio of less than 0.19, pour point of less than -15° C. and VI above about 130.
Claim 16
Dependent Claim
41 words
A lubricant composition comprising a mixture of 2-dialkyl oxirane and 1,2-dialkyl oxirane having between an average of 30 and 1000 carbon atoms, a branch ratio of less than 0.19, pour point of less than -15° C. and VI above about 130.
Claim 17
Dependent Claim
31 words
The composition of claim 14 having a weight average molecular weight between 300 and 150,000, number average molecular weight between 300 and 30,000 and molecular weight distribution between 1 and 5.
Claim 18
Dependent Claim
29 words
The composition of claim 15 having a viscosity between 3 cs and 500 cs, VI between 130 and 280 and a pour point between -15° C. and -70° C.
Claim 19
Dependent Claim
12 words
The composition of claim 14 wherein said oxirane is C 30 oxirane.
Claim 20
Dependent Claim
19 words
The composition of claim 15 wherein the ratio of carbon atoms to oxygen is at least 30 to 1.
Claim 21
Dependent Claim
27 words
A lubricant composition containing the recurring polymeric structures ##STR4## where m is 3 to 12 and where the combination of n recurring units is 3 to 500.
Claim 22
Dependent Claim
27 words
A lubricant composition containing the recurring polymeric structures ##STR4## where m is 3 to 12 and where the combination of n recurring units is 3 to 500.
Claim 23
Dependent Claim
15 words
The composition of claim 19 where m is seven and the average n is fifteen.
Claim 24
Dependent Claim
20 words
The composition of claim 19 having a viscosity index greater than 130 and a pour point less than -15° C.
Claim 25
Independent Claim
62 words
A method for decreasing wear and reducing friction in an internal combustion engine by lubricating said engine with a friction reducing amount of a product of reaction made by epoxidizing C 30 + polyalpha-olefin oligomeric hydrocarbon lubricant having a branch ratio of less than 0.19 and pour point below -15° C. in the presence of an epoxidizing amount of an epoxidizing agent.
Claim 26
Independent Claim
62 words
A method for decreasing wear and reducing friction in an internal combustion engine by lubricating said engine with a friction reducing amount of a product of reaction made by epoxidizing C 30 + polyalpha-olefin oligomeric hydrocarbon lubricant having a branch ratio of less than 0.19 and pour point below -15° C. in the presence of an epoxidizing amount of an epoxidizing agent.
Claim 27
Dependent Claim
56 words
The method of claim 22 wherein said product has a weight average molecular weight between 300 and 150,000, number average molecular weight between 300 and 30,000, molecular weight distribution between 1 and 5, a viscosity between 3 cs and 500 cs, VI between 130 and 280 and a pour point between -15° C. and -70° C.
Claim 28
Independent Claim
65 words
A method for scavenging water and decreasing corrosion in an internal combustion engine by lubricating said engine with a lubricant containing a water reactive amount of a product of reaction made by epoxidizing C 30 + polyalpha-olefin oligomeric hydrocarbon lubricant having a branch ratio of less than 0.19 and pour point below -15° C. in the presence of an epoxidizing amount of an epoxidizing agent.
Claim 29
Independent Claim
65 words
A method for scavenging water and decreasing corrosion in an internal combustion engine by lubricating said engine with a lubricant containing a water reactive amount of a product of reaction made by epoxidizing C 30 + polyalpha-olefin oligomeric hydrocarbon lubricant having a branch ratio of less than 0.19 and pour point below -15° C. in the presence of an epoxidizing amount of an epoxidizing agent.
Claim 30
Dependent Claim
45 words
The method of claim 23 wherein said polyalpha-olefin comprises the unsaturated oligomeric or co-oligomeric residue of the oligomerization of C 6 -C 20 1-alkene in contact with reduced valence state chromium oxide catalyst on silica support at a temperature between 90° C. and 250° C.
Claim 31
Dependent Claim
82 words
A lubricant mixture having enhanced viscosity index comprising, a lubricant composition comprising a mixture of 2-dialkyl oxirane having between an average of 0.1 to 10 weight percent 30 and 1000 carbon atoms, a branch ratio of less than 0.19, pour point of less than -15° C. and VI above about 130 and; liquid lubricant taken from the group consisting essentially of mineral oil, hydrogenated polyolefins, vinyl polymers, polyflurocarbons, polyethers, polychlorofluorocarbons, polyesters, polycarbonates, polyurethanes, polyacetals, polyamides, polythiols, their copolymers, terepolymers and mixtures thereof.
Claim 32
Dependent Claim
82 words
A lubricant mixture having enhanced viscosity index comprising, a lubricant composition comprising a mixture of 2-dialkyl oxirane having between an average of 0.1 to 10 weight percent 30 and 1000 carbon atoms, a branch ratio of less than 0.19, pour point of less than -15° C. and VI above about 130 and; liquid lubricant taken from the group consisting essentially of mineral oil, hydrogenated polyolefins, vinyl polymers, polyflurocarbons, polyethers, polychlorofluorocarbons, polyesters, polycarbonates, polyurethanes, polyacetals, polyamides, polythiols, their copolymers, terepolymers and mixtures thereof.
Claim 33
Dependent Claim
76 words
The lubricant mixture of claim 26 wherein said mineral oil comprises C 30 + hydrocarbons, said hydrogenated polyolefins comprise polyisobutylene, polypropylene and polyalpha-olefins with a branch ratio greater than 0.19, said vinyl polymers comprise polymethylmethacrylate and polyvinylchloride, said polyflurocarbons comprise polytetrafluoroethylene, said polychloroflurocarbons comprise polychlorofluroethylene, said polyesters comprise polyethyleneterephthalate and polyethyleneadipate, said polycarbonates comprise polybisphenol A carbonate, said polyurethanes comprise polyethylenesuccinoylcarbamate, said polyacetals comprise polyoxymethylene, said polyamides comprise polycaprolactam, said polyethers comprise polyethyleneglycol, and copolymers thereof.
Claim 34
Dependent Claim
45 words
The mixture of claim 26 further comprising between 0.1 and 10 weight percent lubricant additives taken from the group consisting of dispersants, detergents, viscosity index improvers, extreme pressure/antiwear additives, antioxidants, pour depressants, emulsifiers, demulsifiers, corrosion inhibitors, antirust inhibitors, antistaining additives, friction modifiers, and the like.
Claim 35
Dependent Claim
47 words
The composition according to claim 19 further comprising between 0.1 pl and 10 weight percent lubricant additives taken from the group consisting of dispersants, detergents, viscosity index improvers, extreme pressure/antiwear additives, antioxidants, pour depressants, emulsifiers, demulsifiers, corrosion inhibitors, antirust inhibitors, antistaining additives, friction modifiers, and the like.
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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) | 1993-07-23 | 1994-01-22 | 1994-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-23 | 1998-01-22 | 1998-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-23 | 2002-01-22 | 2002-07-24 | $7700.00 | Window Closed / Lapsed |