US4370248A
Expired / Lapsed
US
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Borated hydroxyl-containing acid esters and lubricants containing same
Assignee: Mobil Oil AS
•
Filing: 1980-12-16
•
Granted: 1983-01-25
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Expires: 2000-12-16
Abstract
Abstract Lubricating oils containing certain borated derivatives of hydroxyl-containing acid esters have been found to be effective friction modifiers and to aid in the reduction of fuel consumption in internal combustion engines.
Inventors
- 👤 Andrew G. Horodysky
- 👤 Joan M. Kaminski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:02
CPC Classifications
C; C10; C10M; C10M139/00; C07; C07F; C07F5/00; C07F5/02; C07F5/04; C10M2227/00; C10M2227/06; C10M2227/061
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
66 words
A product of reaction obtained by initially reacting (1) a branched aliphatic polyhydric alcohol containing 3 or 4 hydroxyl groups with a monocarboxylic acid such that the initial compound has 2 or 3 acyl groups, 2 when the alcohol has 3 or 4 hydroxyl groups and 3 only when the alcohol has 4 hydroxyl groups and then reacting the ester obtained with (2) a boron compound.
Claim 2
Dependent Claim
66 words
A product of reaction obtained by initially reacting (1) a branched aliphatic polyhydric alcohol containing 3 or 4 hydroxyl groups with a monocarboxylic acid such that the initial compound has 2 or 3 acyl groups, 2 when the alcohol has 3 or 4 hydroxyl groups and 3 only when the alcohol has 4 hydroxyl groups and then reacting the ester obtained with (2) a boron compound.
Claim 3
Dependent Claim
41 words
The product of claim 1 wherein the polyhydric alcohol contains from 3 to 30 carbon atoms and the monocarboxylic has the formula R--COOH wherein R is a hydrocarbyl group containing 5 to 30 carbon atoms, or mixtures of such hydrocarbyl groups.
Claim 4
Dependent Claim
12 words
The product of claim 1 wherein the boron compound is boric acid.
Claim 5
Dependent Claim
36 words
The product of claim 1 wherein the boron compound has the formula (R"O).sub.x B(OH).sub.y wherein R" is a C 1 to C 6 alkyl, x is 1 to 3 and y is 0, 1 or 2.
Claim 6
Dependent Claim
13 words
The product of claim 4 wherein the boron compound is a trialkyl borate.
Claim 7
Dependent Claim
30 words
The product of claim 1 wherein boric acid is reacted with an ester prepared from pentaerythritol, oleic acid and pelargonic acid, said ester having 2 free hydroxyl groups per molecule.
Claim 8
Dependent Claim
30 words
The product of claim 1 wherein boric acid is reacted with an ester prepared from pentaerythritol, oleic acid and pelargonic acid, said ester having 1.5 free hydroxyl groups per molecule.
Claim 9
Dependent Claim
30 words
The product of claim 1 wherein boric acid is reacted with an ester prepared from pentaerythritol, oleic acid and pelargonic acid, said ester having 1 free hydroxyl group per molecule.
Claim 10
Dependent Claim
30 words
The product of claim 1 wherein boric acid is reacted with an ester prepared from trimethylolpropane, oleic acid and pelargonic acid, said ester having 1 free hydroxyl group per molecule.
Claim 11
Dependent Claim
77 words
A lubricant composition comprising lubricant and a friction reducing amount of a product of reaction obtained by initially reacting (1) a branched aliphatic polyhydric alcohol containing 3 or 4 hydroxyl groups with a monocarboxylic acid such that the initial compound has 2 or 3 acyl groups, 2 when the alcohol has 3 or 4 hydroxyl groups and 3 only when the alcohol has 4 hydroxyl groups and then reacting the ester obtained with (2) a boron compound.
Claim 12
Dependent Claim
77 words
A lubricant composition comprising lubricant and a friction reducing amount of a product of reaction obtained by initially reacting (1) a branched aliphatic polyhydric alcohol containing 3 or 4 hydroxyl groups with a monocarboxylic acid such that the initial compound has 2 or 3 acyl groups, 2 when the alcohol has 3 or 4 hydroxyl groups and 3 only when the alcohol has 4 hydroxyl groups and then reacting the ester obtained with (2) a boron compound.
Claim 13
Dependent Claim
47 words
The composition of claim 10 wherein the ester is obtained from a polyhydric alcohol having from 3 to 30 carbon atoms and a monocarboxylic acid of the formula R--COOH wherein R is a hydrocarbyl group containing 5 to 30 carbon atoms, or mixtures of such hydrocarbyl groups.
Claim 14
Dependent Claim
12 words
The composition of claim 10 wherein the boron compound is boric acid.
Claim 15
Dependent Claim
36 words
The composition of claim 10 wherein the boron compound has the formula (R"O).sub.x B(OH).sub.y wherein R" is a C 1 to C 6 alkyl, x is 1 to 3 and y is 0, 1 or 2.
Claim 16
Dependent Claim
13 words
The composition of claim 13 wherein the boron compound is a trialkyl borate.
Claim 17
Dependent Claim
36 words
The composition of claim 10 wherein the product of reaction is obtained by reacting boric acid with an ester prepared from pentaerythritol, oleic acid and pelargonic acid, said ester having 2 free hydroxyl groups per molecule.
Claim 18
Dependent Claim
36 words
The composition of claim 10 wherein the product of reaction is obtained by reacting boric acid with an ester prepared from pentaerythritol, oleic acid and pelargonic acid, said ester having 1.5 free hydroxyl group per molecule.
Claim 19
Dependent Claim
36 words
The composition of claim 10 wherein the product of reaction is obtained by reacting boric acid with an ester prepared from pentaerythritol, oleic acid and pelargonic acid, said ester having 1 free hydroxyl group per molecule.
Claim 20
Dependent Claim
36 words
The composition of claim 10 wherein the product of reaction is obtained by reacting boric acid with an ester prepared from trimethylolpropane, oleic acid and pelargonic acid, said ester having 1 free hydroxyl group per molecule.
Claim 21
Dependent Claim
19 words
The product of claim 1 wherein boric acid is reacted with the ester prepared from pentaerythritol and oleic acid.
Claim 22
Dependent Claim
12 words
The composition of claim 10 wherein the lubricant is a mineral oil.
Claim 23
Dependent Claim
17 words
The composition of claim 10 wherein the lubricant is a mixture of mineral and synthetic lubricating oils.
References Cited (Backward Citations)
US2469370A
Cited
US2508924A
Cited
US3067192A
Cited
US3150157A
Cited
US3533945A
Cited
US3544614A
Cited
US3772357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-24 | 1986-07-26 | 1987-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-24 | 1990-07-26 | 1991-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-24 | 1994-07-26 | 1995-01-25 | $7700.00 | Window Closed / Lapsed |