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US4759873A
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Organic boron-sulfur compounds and lubricant compositions containing same
Assignee: ExxonMobil Oil Corp
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Filing: 1987-08-10
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Granted: 1988-07-26
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Expires: 2007-08-10
Abstract
Abstract Sulfur containing diols are reacted with hydroxy boron compounds resulting in the formation of symmetrically balanced compounds which are useful as additives for lubricating oil compositions.
Inventors
- 👤 Costandi A. Audeh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:44
CPC Classifications
C; C10; C10M; C10M139/00; C10M2227/00; C10M2227/06; C10M2227/061; C10M2227/062
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
77 words
The compound resulting from the reaction of a sulfur-containing diol compound having the structural formula HO--X--OH where X is a symmetrical group of atoms containing carbon and sulfur atoms, and the sulfur component of X is located at the mid point of the symmetrical chain if X is a lone sulfur atom or, if X contains more than one sulfur atom those sulfur atoms are located at equidistant points from the center of the group, with 10-hydroxy-10,9-boroxarophenanthrene.
Claim 2
Dependent Claim
77 words
The compound resulting from the reaction of a sulfur-containing diol compound having the structural formula HO--X--OH where X is a symmetrical group of atoms containing carbon and sulfur atoms, and the sulfur component of X is located at the mid point of the symmetrical chain if X is a lone sulfur atom or, if X contains more than one sulfur atom those sulfur atoms are located at equidistant points from the center of the group, with 10-hydroxy-10,9-boroxarophenanthrene.
Claim 3
Dependent Claim
12 words
The compound of claim 1 wherein the sulfur containing diol is 2,2'-thiodiethanol.
Claim 4
Dependent Claim
14 words
The compound of claim 1 wherein the sulfur containing diol compound is 3,6-dithia-1,8-octane diol.
Claim 5
Dependent Claim
11 words
The compound of claim 1 wherein the sulfur-containing diol is 3,3'-thiodipropanol.
Claim 6
Dependent Claim
11 words
The compound of claim 1 wherein the sulfur-containing diol is 1,4-dithiane-2,5,-diol.
Claim 7
Dependent Claim
81 words
The compound comprising ##STR8## where R 1 and R 2 are hydrocarbon radicals which are or are not linked into a cyclic configuration, X is a symmetrical group of atoms containing sulfur and carbon atoms, and the sulfur component of X is located at the mid point of the symmetrical chain if X is a lone sulfur atom or, if X contains more than one sulfur atom those sulfur atoms are located at equidistant points from the center of the group.
Claim 8
Dependent Claim
81 words
The compound comprising ##STR8## where R 1 and R 2 are hydrocarbon radicals which are or are not linked into a cyclic configuration, X is a symmetrical group of atoms containing sulfur and carbon atoms, and the sulfur component of X is located at the mid point of the symmetrical chain if X is a lone sulfur atom or, if X contains more than one sulfur atom those sulfur atoms are located at equidistant points from the center of the group.
Claim 9
Dependent Claim
16 words
The compound of claim 6 wherein the two ##STR9## radicals are mirror images of each other.
Claim 10
Dependent Claim
3 words
The compound ##STR10##
Claim 11
Dependent Claim
3 words
The compound ##STR10##
Claim 12
Dependent Claim
3 words
The compound ##STR11##
Claim 13
Dependent Claim
3 words
The compound ##STR11##
Claim 14
Dependent Claim
28 words
A lubricating composition comprising a liquid hydrocarbon lubricant and between about 0.1 and about 1.0% by weight of the total lubricant composition of the compound of claim 1.
Claim 15
Dependent Claim
28 words
A lubricating composition comprising a liquid hydrocarbon lubricant and between about 0.01 and about 1.0% by weight of the total lubricant composition of the compound of claim 2.
Claim 16
Dependent Claim
28 words
A lubricating composition comprising a liquid hydrocarbon lubricant and between about 0.01 and about 1.0% by weight of the total lubricant composition of the compound of claim 3.
Claim 17
Dependent Claim
28 words
A lubricating composition comprising a liquid hydrocarbon lubricant and between about 0.01 and about 1.0% by weight of the total lubricant composition of the compound of claim 4.
Claim 18
Dependent Claim
28 words
A lubricating composition comprising a liquid hydrocarbon lubricant and between about 0.01 and about 1.0% by weight of the total lubricant composition of the compound of claim 5.
Claim 19
Dependent Claim
28 words
A lubricating composition comprising a liquid hydrocarbon lubricant and between about 0.01 and about 1.0% by weight of the total lubricant composition of the compound of claim 6.
Claim 20
Dependent Claim
28 words
A lubricating composition comprising a liquid hydrocarbon lubricant and between about 0.01 and about 1.0% by weight of the total lubricant composition of the compound of claim 7.
Claim 21
Dependent Claim
28 words
A lubricating composition comprising a liquid hydrocarbon lubricant and between about 0.01 and about 1.0% by weight of the total lubricant composition of the compound of claim 8.
Claim 22
Dependent Claim
28 words
A lubricating composition comprising a liquid hydrocarbon lubricant and between about 0.01 and about 1.0% by weight of the total lubricant composition of the compound of claim 9.
Claim 23
Dependent Claim
20 words
The lubricating composition of claim 10 wherein the hydrocarbon lubricant selected from the group consisting of mineral oil, synthetic oil.
Claim 24
Independent Claim
105 words
A method for increasing the hardness of a steel surface comprising lubricating said surface with a lubricating composition comprising: a. a lubricating oil, and; b. a boron- and sulfur-containing additive comprising the composition prepared by reacting 10-hydroxy-10,9-boroxarophenanthrene with a sulfur-containing diol compound of the formula: HO--X--OH where x is a symmetrical group of atoms containing carbon and sulfur atoms, and the sulfur component of X is located at the mid point of the symmetrical chain if X is a lone sulfur atom or, if X contains more than one sulfur atom those sulfur atoms are located at equidistant points from the center of the group.
Claim 25
Independent Claim
105 words
A method for increasing the hardness of a steel surface comprising lubricating said surface with a lubricating composition comprising: a. a lubricating oil, and; b. a boron- and sulfur-containing additive comprising the composition prepared by reacting 10-hydroxy-10,9-boroxarophenanthrene with a sulfur-containing diol compound of the formula: HO--X--OH where x is a symmetrical group of atoms containing carbon and sulfur atoms, and the sulfur component of X is located at the mid point of the symmetrical chain if X is a lone sulfur atom or, if X contains more than one sulfur atom those sulfur atoms are located at equidistant points from the center of the group.
Claim 26
Dependent Claim
11 words
The method of claim 20 wherein said sulfur-containing diol is 2,2'-thiodiethanol.
Claim 27
Dependent Claim
12 words
The method of claim 20 wherein said sulfur-containing diol is 3,6-dithia-1,8-octane diol.
Claim 28
Dependent Claim
11 words
The method of claim 20 wherein said sulfur-containing diol is 3,3'-thiodipropanol.
Claim 29
Dependent Claim
11 words
The method of claim 20 wherein said sulfur-containing diol is 1,4-dithiane-2,5,-diol.
Claim 30
Dependent Claim
18 words
The method of claim 20 wherein said boron- and sulfur-containing additive for increasing hardness is the compound, ##STR12##
Claim 31
Dependent Claim
18 words
The method of claim 20 wherein said boron- and sulfur-containing additive for increasing hardness is the compound, ##STR13##
Claim 32
Dependent Claim
57 words
A process for preparing the reaction product of a sulfur-containing diol compound with a hydroxy boron compound comprising reacting a phenanthrene selected from the group consisting of 10-hydroxy-10, 9-boroxarophenanthrene, and ring substituted phenanthrenes containing methyl, methoxy, nitro, chlorine or bromine substituents with a sulfur-containing diol compound selected from the group consisting of 2,2'-thiodiethanol, 3,3'-thiodipropanol, 3,6-dithia-1,8-octanediol and 1,4-dithiane-2,5-diol.
Claim 33
Dependent Claim
57 words
A process for preparing the reaction product of a sulfur-containing diol compound with a hydroxy boron compound comprising reacting a phenanthrene selected from the group consisting of 10-hydroxy-10, 9-boroxarophenanthrene, and ring substituted phenanthrenes containing methyl, methoxy, nitro, chlorine or bromine substituents with a sulfur-containing diol compound selected from the group consisting of 2,2'-thiodiethanol, 3,3'-thiodipropanol, 3,6-dithia-1,8-octanediol and 1,4-dithiane-2,5-diol.
Claim 34
Dependent Claim
99 words
The method of claim 20 wherein said boron- and sulfur-containing additive for increasing hardness is the compound of the structural formula: ##STR14## where R 1 and R 2 are hydrocarbon radicals which are or are not linked into a cyclic configuration, X is a symmetrical group of atoms containing sulfur and carbon atoms, and the sulfur component of X is located at the mid point of the symmetrical chain if X is a lone sulfur atom or, if X contains more than one sulfur atom those sulfur atoms are located at equidistant points from the center of the group.
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) | 1991-07-26 | 1992-01-25 | 1992-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-26 | 1996-01-25 | 1996-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-26 | 2000-01-25 | 2000-07-26 | $7700.00 | Window Closed / Lapsed |