Patent US4137184A successfully refreshed from Google Patents.
US4137184A
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Overbased sulfonates
Assignee: Chevron USA Inc
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Filing: 1976-12-16
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Granted: 1979-01-30
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Expires: 1996-12-16
Abstract
Abstract Metal sulfonates of the formula R--SO 3 M wherein R is hydrocarbyl and M is a Group I or Group II metal or lead are overbased with Group II metal carbonate, bicarbonate, oxide or hydroxide. Also provided are lubricating oil compositions or concentrates containing these overbased sulfonates.
Inventors
- 👤 Nicolaas Bakker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:07
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/20; C10M159/24; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2211/00; C10M2211/02; C10M2211/08; C10M2215/00; C10M2215/086; C10M2215/24; C10M2215/28; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2219/083; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/08; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
42 words
A Group II metal carbonate overbased metal sulfonate of the formula R--SO 3 M wherein R is a substantially saturated aliphatichydrocarbyl substituent containing 50 to about 300 aliphatic carbon atoms and M is a Group I or Group II metal or lead.
Claim 2
Dependent Claim
42 words
A Group II metal carbonate overbased metal sulfonate of the formula R--SO 3 M wherein R is a substantially saturated aliphatichydrocarbyl substituent containing 50 to about 300 aliphatic carbon atoms and M is a Group I or Group II metal or lead.
Claim 3
Dependent Claim
18 words
The overbased sulfonate of claim 1 wherein M is lithium, potassium, sodium, magnesium, calcium, strontium, barium or zinc.
Claim 4
Dependent Claim
20 words
The overbased sulfonate of claim 2 wherein the hydrocarbyl substituent contains from about 50 to about 250 aliphatic carbon atoms.
Claim 5
Dependent Claim
24 words
The overbased sulfonate of claim 3 wherein the overbasing Group II metal is calcium, barium or magnesium and M is calcium, barium or magnesium.
Claim 6
Dependent Claim
10 words
The overbased sulfonate of claim 4 wherein R is polyisobutenyl.
Claim 7
Dependent Claim
25 words
The overbased sulfonate of claim 5 wherein R has a molecular weight from 800 to 1200 and the Group II metal is calcium or magnesium.
Claim 8
Dependent Claim
33 words
A concentrated lubricating oil additive composition comprising: (A) 90 to 10 weight percent of an oil of lubricating viscosity, and (B) 10 to 90 weight percent of an oil-soluble composition of claim 1.
Claim 9
Dependent Claim
21 words
A composition comprising: (A) an oil of lubricating viscosity, and (B) a dispersant amount of an oil-soluble composition of claim 1.
Claim 10
Dependent Claim
21 words
In a method for lubricating a device, the improvement comprising using a lubricant composition containing the overbased sulfonate of claim 1.
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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) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |