Patent US4811709A successfully refreshed from Google Patents.
US4147640A
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Lubricant composition
Assignee: Edwin Cooper and Co Ltd
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Filing: 1977-08-17
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Granted: 1979-04-03
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Expires: 1997-08-17
Abstract
Abstract Lubricating oils having improved antioxidant and antiwear properties are obtained by adding a minor amount of a reaction product made by reacting an olefinic hydrocarbon containing about 6-18 carbon atoms and about 1-3 olefinic double bonds concurrently with sulfur and hydrogen sulfide to obtain a reaction intermediate and reacting this intermediate with additional olefin hydrocarbon which may be the same or different. Preferred olefinic hydrocarbons are dicyclopentadiene and alloocimene.
Inventors
- 👤 Gerald J. J. Jayne
- 👤 David R. Woods
- 👤 Joseph P. O'Brien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:19
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; C07D285/125; C07B; C07B45/00; C10; C10M; C10M135/00; C10M135/02; C10M135/04; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/028; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/28; C10M2207/282; C10M2207/34; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/04; C10M2219/044; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/12; C10M2225/00; C10M2225/04; C10M2225/041; C10N; C10N2010/00; C10N2010/04; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
116 words
A lubricating oil additive prepared by the process comprising: (A) in a first stage reacting at about 50°-160° C. about one mole of a first reactive olefinically unsaturated hydrocarbon containing about 6-18 carbon atoms and 1-3 olefinic double bonds with about 0.1-5 moles of elemental sulfur and about 0.1-1 moles of added hydrogen sulfide to obtain an intermediate, and (B) in a second stage reacting at about 100°-210° C. said intermediate with about 0.2-1 moles of a second reactive olefinically unsaturated hydrocarbon containing about 6-18 carbon atoms and 1-3 olefinic double bonds, said second olefinically unsaturated hydrocarbon being the same or different from said first olefinically unsaturated hydrocarbon, to obtain an oil soluble lubricating oil additive.
Claim 2
Dependent Claim
116 words
A lubricating oil additive prepared by the process comprising: (A) in a first stage reacting at about 50°-160° C. about one mole of a first reactive olefinically unsaturated hydrocarbon containing about 6-18 carbon atoms and 1-3 olefinic double bonds with about 0.1-5 moles of elemental sulfur and about 0.1-1 moles of added hydrogen sulfide to obtain an intermediate, and (B) in a second stage reacting at about 100°-210° C. said intermediate with about 0.2-1 moles of a second reactive olefinically unsaturated hydrocarbon containing about 6-18 carbon atoms and 1-3 olefinic double bonds, said second olefinically unsaturated hydrocarbon being the same or different from said first olefinically unsaturated hydrocarbon, to obtain an oil soluble lubricating oil additive.
Claim 3
Dependent Claim
33 words
An additive of claim 1 wherein said first reactive olefinically unsaturated hydrocarbon and said second reactive olefinically unsaturated hydrocarbons are selected from the group consisting of cyclopentadiene dimers, lower alkylcyclopentadiene dimers and alloocimene.
Claim 4
Dependent Claim
17 words
An additive of claim 2 wherein said first and said second reactive olefinically unsaturated hydrocarbons are dicyclopentadiene.
Claim 5
Dependent Claim
17 words
An additive of claim 2 wherein said first and said second reactive olefinically unsaturated hydrocarbons are alloocimene.
Claim 6
Dependent Claim
23 words
An additive of claim 2 wherein said first reactive olefinically unsaturated hydrocarbon is dicyclopentadiene and said second reactive olefinically unsaturated hydrocarbon is alloocimene.
Claim 7
Dependent Claim
23 words
An additive of claim 2 wherein said first reactive olefinically unsaturated hydrocarbon is alloocimene and said second reactive olefinically unsaturated hydrocarbon is dicyclopentadiene.
Claim 8
Dependent Claim
53 words
An additive of claim 2 wherein in step (A) said one mole of first reactive olefinically unsaturated hydrocarbon is reacted concurrently with about 0.4-0.6 mole of hydrogen sulfide and about 1.5-2.5 moles of sulfur and in step (B) said intermediate is reacted with about 0.4-0.8 mole of said second reactive olefinically unsaturated hydrocarbon.
Claim 9
Dependent Claim
21 words
An additive of claim 7 wherein said first reactive olefinically unsaturated hydrocarbon and said second reactive olefinically unsaturated hydrocarbon are alloocimene.
Claim 10
Dependent Claim
21 words
An additive of claim 7 wherein said first reactive olefinically unsaturated hydrocarbon and said second reactive olefinically unsaturated hydrocarbon are dicyclopentadiene.
Claim 11
Dependent Claim
23 words
An additive of claim 7 wherein said first reactive olefinically unsaturated hydrocarbon is dicyclopentadiene and said second reactive olefinically unsaturated hydrocarbon is alloocimene.
Claim 12
Dependent Claim
23 words
An additive of claim 7 wherein said first reactive olefinically unsaturated hydrocarbon is alloocimene and said second reactive olefinically unsaturated hydrocarbon is dicyclopentadiene.
Claim 13
Dependent Claim
103 words
A process for making a lubricating oil additive, said process comprising: (A) in a first stage reacting at about 50°-160° C. about one mole of a first reactive olefinically unsaturated hydrocarbon containing about 6-18 carbon atoms and 1-3 olefinic double bonds concurrently with about 0.1-5 moles of elemental sulfur and about 0.1-1 moles of added hydrogen sulfide to obtain an intermediate, and (B) in a second stage reacting at about 100°-210° C. said intermediate with about 0.2-1 moles of a second reactive olefinically unsaturated hydrocarbon containing about 6-18 carbon atoms and 1-3 olefinic double bonds to obtain an oil soluble lubricating oil additive.
Claim 14
Dependent Claim
103 words
A process for making a lubricating oil additive, said process comprising: (A) in a first stage reacting at about 50°-160° C. about one mole of a first reactive olefinically unsaturated hydrocarbon containing about 6-18 carbon atoms and 1-3 olefinic double bonds concurrently with about 0.1-5 moles of elemental sulfur and about 0.1-1 moles of added hydrogen sulfide to obtain an intermediate, and (B) in a second stage reacting at about 100°-210° C. said intermediate with about 0.2-1 moles of a second reactive olefinically unsaturated hydrocarbon containing about 6-18 carbon atoms and 1-3 olefinic double bonds to obtain an oil soluble lubricating oil additive.
Claim 15
Dependent Claim
33 words
A process of claim 12 wherein said first reactive olefinically unsaturated hydrocarbon and said second reactive olefinically unsaturated hydrocarbons are selected from the group consisting of cyclopentadiene dimers, lower alkylcyclopentadiene dimers and alloocimene.
Claim 16
Dependent Claim
17 words
A process of claim 13 wherein said first and said second reactive olefinically unsaturated hydrocarbons are dicyclopentadiene.
Claim 17
Dependent Claim
17 words
A process of claim 13 wherein said first and said second reactive olefinically unsaturated hydrocarbons are alloocimene.
Claim 18
Dependent Claim
23 words
A process of claim 13 wherein said first reactive olefinically unsaturated hydrocarbon is dicyclopentadiene and said second reactive olefinically unsaturated hydrocarbon is alloocimene.
Claim 19
Dependent Claim
23 words
A process of claim 13 wherein said first reactive olefinically unsaturated hydrocarbon is alloocimene and said second reactive olefinically unsaturated hydrocarbon is dicyclopentadiene.
Claim 20
Dependent Claim
27 words
A lubricating oil composition comprising a major amount of a lubricating oil and a minor amount sufficient to impart antioxidant properties of an additive of claim 1.
Claim 21
Dependent Claim
35 words
A lubricating oil composition of claim 18 wherein said first reactive olefinically unsaturated hydrocarbon and said second reactive olefinically unsaturated hydrocarbon are selected from the group consisting of cyclopentadiene dimers, lower alkylcyclopentadiene dimers and alloocimene.
Claim 22
Dependent Claim
19 words
A lubricating oil composition of claim 19 wherein said first and said second reactive olefinically unsaturated hydrocarbons are dicyclopentadiene.
Claim 23
Dependent Claim
19 words
A lubricating oil composition of claim 19 wherein said first and said second reactive olefinically unsaturated hydrocarbons are alloocimene.
Claim 24
Dependent Claim
25 words
A lubricating oil composition of claim 19 wherein said first reactive olefinically unsaturated hydrocarbon is dicyclopentadiene and said second relative olefinically unsaturated hydrocarbon is alloocimene.
Claim 25
Dependent Claim
25 words
A lubricating oil composition of claim 19 wherein said first reactive olefinically unsaturated hydrocarbon is alloocimene and said second reactive olefinically unsaturated hydrocarbon is dicyclopentadiene.
Claim 26
Dependent Claim
27 words
A lubricating oil composition comprising a major amount of a lubricating oil and a minor amount sufficient to impart antioxidant properties of an additive of claim 7.
References Cited (Backward Citations)
DE658128C
Cited
US2312750A
Cited
US2337473A
Cited
US2422275A
Cited
US2445983A
Cited
US2500167A
Cited
US2817653A
Cited
US2658900A
Cited
US4000078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-02 | 1982-10-02 | 1983-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-02 | 1986-10-02 | 1987-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-02 | 1990-10-02 | 1991-04-03 | $7700.00 | Window Closed / Lapsed |