US4394277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for improving fuel economy of internal combustion engines using borated sulfur-containing 1,2-alkane diols
Assignee: Chevron USA Inc
•
Filing: 1981-10-26
•
Granted: 1983-07-19
•
Expires: 2001-10-26
Abstract
Abstract Lubricating oils containing borated sulfur-containing 1,2-alkane diols have been found to reduce fuel consumption in an internal combustion engine.
Inventors
- 👤 Vernon R. Small, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:51
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/02; C07F5/04; C10; C10M; C10M129/00; C10M129/02; C10M129/04; C10M129/10; C10M129/86; C10M129/95; C10M133/00; C10M133/52; C10M133/56; C10M135/00; C10M135/08; C10M135/10; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M139/00; C10M141/00; C10M141/12; C10M159/00; C10M159/12; C10M159/20; C10M159/22; C10M159/24; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/027; C10M2207/028; C10M2207/26; C10M2207/262; C10M2207/28; C10M2207/287; C10M2207/289; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/02; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2227/00; C10M2227/06; C10M2227/061; C10M2227/062; C10M2227/063; C10M2227/065; C10M2227/066; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
25 words
A borated sulfur-containing 1,2-alkane diol of the formula ##STR8## wherein R is alkyl containing 5 to 30 carbon atoms and m is 1 or 2.
Claim 2
Dependent Claim
25 words
A borated sulfur-containing 1,2-alkane diol of the formula ##STR8## wherein R is alkyl containing 5 to 30 carbon atoms and m is 1 or 2.
Claim 3
Dependent Claim
15 words
The compound of claim 1 wherein R is alkyl containing 5 to 18 carbon atoms.
Claim 4
Dependent Claim
19 words
The compound of claim 1 wherein R is alkyl containing from 5 to 18 carbon atoms, m is 1.
Claim 5
Dependent Claim
28 words
The compound of claim 1 wherein the borated sulfur-containing 1,2-alkane diol is borated 4-thia-1,2-hexadecane diol, borated 5-thia-1,2-hexadecane diol, borated 5-thia-1,2-heptadecane diol, borated 4-thia-1,2-heptadecane diol or borated 4-thia-1,2-octadecane diol.
Claim 6
Dependent Claim
15 words
The compound of claim 4 wherein the borated sulfur-containing 1,2-alkane diol is borated 4-thia-1,2-hexadecane diol.
Claim 7
Dependent Claim
47 words
The lubricating oil composition comprising a major proportion of an oil of lubricating viscosity and a minor effective amount of a borated sulfur-containing 1,2-alkane diol friction-reducing additive of the formula ##STR9## wherein R is aklyl containing from 5 to 30 carbon atoms, m is 1 or 2.
Claim 8
Dependent Claim
47 words
The lubricating oil composition comprising a major proportion of an oil of lubricating viscosity and a minor effective amount of a borated sulfur-containing 1,2-alkane diol friction-reducing additive of the formula ##STR9## wherein R is aklyl containing from 5 to 30 carbon atoms, m is 1 or 2.
Claim 9
Dependent Claim
14 words
The composition of claim 1 containing from about 0.1 to 5% of said additive.
Claim 10
Dependent Claim
17 words
The lubricating oil composition of claim 6 where R is alkyl containing 5 to 18 carbon atoms.
Claim 11
Dependent Claim
21 words
The lubricating oil composition of claim 6 wherein R is alkyl containing from 5 to 18 carbon atoms, m is 1.
Claim 12
Dependent Claim
31 words
The lubricating oil composition of claim 6 wherein the borated sulfur-containing 1,2-alkane diol additive is borated 4-thia-1,2-hexadecane diol, borated 5-thia-1,2-hexadecane diol, borated 5-thia-1,2-heptadecane diol, borated 4-thia-1,2-heptadecane diol, or borated 4-thia-1,2-octadecane diol.
Claim 13
Dependent Claim
18 words
The lubricating oil composition of claim 10 wherein the borated sulfur-containing 1,2-alkane diol additive is borated 4-thia-1,2-hexadecane diol.
Claim 14
Dependent Claim
46 words
The lubricating oil composition formulated for use in the crankcase of an internal combustion engine in order to improve the fuel comsumption of said engine comprising (a) a major amount of an oil of lubricating viscosity; and (b) an effective amount of each of the following:
Claim 15
Dependent Claim
46 words
The lubricating oil composition formulated for use in the crankcase of an internal combustion engine in order to improve the fuel comsumption of said engine comprising (a) a major amount of an oil of lubricating viscosity; and (b) an effective amount of each of the following:
Claim 16
Dependent Claim
95 words
from 1%-20% of an ankenyl succinimide or alkenyl succinate or mixtures thereof, 2. from 0.1%-4% of a Group II metal salt of a dihydrocarbyl dithiophosphoric acid, 3. from 0.3%-10% of a neutral or overbased alkali or alkaline earth metal hydrocarbyl sulfonate or mixtures thereof, 4. from 0.3%-27% of a neutral or overbased alkali or alkaline earth metal alkylated phenate, or mixtures thereof, and 5. from 0.1%-5% of a borated sulfur-containing 1,2-alkane diol friction modifying agent of the formula: ##STR10## wherein R is alkyl containing from 5 to 30 carbon atoms, m is 1 or 2.
Claim 17
Dependent Claim
95 words
from 1%-20% of an ankenyl succinimide or alkenyl succinate or mixtures thereof, 2. from 0.1%-4% of a Group II metal salt of a dihydrocarbyl dithiophosphoric acid, 3. from 0.3%-10% of a neutral or overbased alkali or alkaline earth metal hydrocarbyl sulfonate or mixtures thereof, 4. from 0.3%-27% of a neutral or overbased alkali or alkaline earth metal alkylated phenate, or mixtures thereof, and 5. from 0.1%-5% of a borated sulfur-containing 1,2-alkane diol friction modifying agent of the formula: ##STR10## wherein R is alkyl containing from 5 to 30 carbon atoms, m is 1 or 2.
Claim 18
Dependent Claim
17 words
The lubricating oil composition of claim 12 wherein R is alkyl containing 5 to 18 carbon atoms.
Claim 19
Dependent Claim
27 words
The lubricating oil composition according to claim 12 wherein in the borated sulfur-containing 1,2-alkane diol, R is alkyl from 5 to 18 carbon atoms, m is 1.
Claim 20
Dependent Claim
33 words
The lubricating oil composition of claim 12 wherein the borated sulfur-containing 1,2-alkane diol friction reducing additive is borated 4-thia-1,2-hexadecane diol, borated 5-thia-1,2-hexadecane diol, borated 5-thia-1,2-heptadecane diol, borated 4-thia-1,2-heptadecane diol, or borated 5-thia-1,2-octadecane diol.
Claim 21
Dependent Claim
121 words
The lubricating oil composition according to claim 12 wherein (1) said alkenyl succinimide is a polyisobutenyl succinimide of a polyalkylene polyamine, and said alkenyl succinate is a polyisobutenyl succinate of a polyhydric alcohol; (2) said metal salt of the dihydrocarbyl dithiophosphoric acid is zinc dialkyl dithiophosphate wherein the alkyl group contains from 4 to 12 carbon atoms; (3) said metal of the neutral or overbased alkali or alkaline earth metal sulfonate is calcium, magnesium or barium or mixtures thereof; (4) said metal of the neutral or overbased alkali or alkaline earth metal phenate is calcium, magnesium or barium; (5) said R group of the borated sulfur-containing 1,2-alkane diol is alkyl containing from 5 to 30 carbon atoms, and m is 1.
Claim 22
Dependent Claim
106 words
The lubricating oil composition according to claim 16 wherein (1) said alkenyl succinimide is a polyisobutenyl succinimide of triethylenetetramine or polyisobutenyl succinimide of tetraethylenepentamine, and said alkenyl succinate is a polyisobutenyl succinate of pentaerythritol; (2) said metal salt of the dihydrocarbyl dithiophosphoric acid is zinc O,O-di(2-ethylhexyl)dithiophosphate, zinc O,O-di(isobutyl/mixed primary hexyl)dithiophosphate, or zinc O,O-di(sec-butyl/mixed secondary hexyl)dithiophosphate; (3) said metal salt of the sulfonate is an overbased magnesium or calcium hydrocarbyl sulfonate; (4) said metal salt of the phenate is an overbased sulfurized calcium or magnesium monoalkylated phenate, (5) said R group of the borated sulfur-containing 1,2-alkane diol is an alkyl containing from 5 to 18 carbon atoms.
Claim 23
Dependent Claim
19 words
The lubricating oil composition according to claim 16 wherein the borated sulfur-containing 1,2-alkane diol additive is borated 4-thia-1,2-hexadecane diol.
Claim 24
Dependent Claim
30 words
A method for reducing the fuel consumption of an internal combustion engine by treating the moving surfaces thereof with a composition according to any one of claim 1 or 12.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |