US5368758A
Expired / Lapsed
US
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Lubricants, greases and aqueous fluids containing additives derived from dimercaptothiadiazoles
Assignee: Lubrizol Corp
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Filing: 1992-10-13
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Granted: 1994-11-29
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Expires: 2012-10-13
Abstract
Abstract The present invention relates to the composition comprising an oil of lubricating viscosity or water and a reaction product of at least one dimercaptothiadiazole or derivative thereof; and at least one aliphatic olefin or salt of the reaction product. These reaction products generally show an ability to improve antiwear (including extreme pressure) and antioxidant properties in lubricants.
Inventors
- 👤 Richard E. Gapinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:40
CPC Classifications
C; C10; C10M; C10M141/00; C10M141/10; C10M125/00; C10M125/24; C10M133/00; C10M133/52; C10M135/00; C10M135/02; C10M135/04; C10M135/06; C10M135/32; C10M135/36; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M173/00; C10M2201/00; C10M2201/02; C10M2201/085; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/086; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/12; C10N2010/14; C10N2010/16; C10N2040/00; C10N2040/02; C10N2040/08; C10N2040/135; C10N2040/20; C10N2040/25; C10N2040/251; C10N2040/252; C10N2040/253; C10N2040/255; C10N2040/26; C10N2040/28; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; C10N2050/00; C10N2050/01; C10N2070/00; C10N2070/02; F; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
30 words
The composition comprising (A) an oil of lubricating viscosity and (B) a salt of a reaction product of (a) at least one dimercaptothiadiazole and (b) at least one aliphatic olefin.
Claim 2
Dependent Claim
30 words
The composition comprising (A) an oil of lubricating viscosity and (B) a salt of a reaction product of (a) at least one dimercaptothiadiazole and (b) at least one aliphatic olefin.
Claim 3
Dependent Claim
17 words
The composition of claim 1, wherein the olefin (b) contains from 3 to about 30 carbon atoms.
Claim 4
Dependent Claim
16 words
The composition of claim 2, wherein the olefin (b) is octene, decene, dodecene, tetradecene or hexadecene.
Claim 5
Dependent Claim
21 words
The composition of claim 1, wherein about 1 to about 2 moles of (a) are reacted with each mole of (b).
Claim 6
Dependent Claim
16 words
The composition of claim 1, wherein approximately equal molar amounts of (a) and (b) are reacted.
Claim 7
Dependent Claim
15 words
The composition of claim 1, wherein (B) is an alkaline earth or transition metal salt.
Claim 8
Dependent Claim
10 words
The composition of claim 1, wherein (B) is zinc salt.
Claim 9
Dependent Claim
15 words
The composition of claim 1, wherein (B) is an ammonium salt derived from an amine.
Claim 10
Dependent Claim
23 words
The composition of claim 8, wherein the amine is a tertiary alkyl primary amine containing from about 4 to about 28 carbon atoms.
Claim 11
Dependent Claim
16 words
The composition of claim 1, further comprising (C) a metal dithiophosphate or a sulfurized organic compound.
Claim 12
Dependent Claim
12 words
The composition of claim 1, wherein (B) is free of sulfur-sulfur bonds.
Claim 13
Dependent Claim
13 words
The composition of claim 1, wherein the lubricating composition is a gear oil.
Claim 14
Dependent Claim
18 words
A composition comprising (A) an oil of lubricating viscosity and (B) a salt of a bis(hydrocarbylthio)thiadiazole, or hydrocarbylthiomercaptothiadiazole.
Claim 15
Dependent Claim
18 words
A composition comprising (A) an oil of lubricating viscosity and (B) a salt of a bis(hydrocarbylthio)thiadiazole, or hydrocarbylthiomercaptothiadiazole.
Claim 16
Dependent Claim
19 words
The composition of claim 13, wherein each hydrocarbyl group independently contains from about 3 to about 30 carbon atoms.
Claim 17
Dependent Claim
19 words
The composition of claim 13, wherein each hydrocarbyl group is independently derived from octerie, decene, dodecene, tetradecene or hexadecene.
Claim 18
Dependent Claim
15 words
The composition of claim 14, wherein (B) is an alkaline earth or transition metal salt.
Claim 19
Dependent Claim
10 words
The composition of claim 13, wherein (B) is zinc salt.
Claim 20
Dependent Claim
15 words
The composition of claim 13, wherein (B) is an ammonium salt derived from an amine.
Claim 21
Dependent Claim
23 words
The composition of claim 18, wherein the amine is a tertiary alkyl primary amine containing from about 4 to about 28 carbon atoms.
Claim 22
Dependent Claim
12 words
The composition of claim 13, wherein (B) is free of sulfur-sulfur bonds.
Claim 23
Dependent Claim
16 words
The composition of claim 13, further comprising (C) a metal dithiophosphate or a sulfurized organic compound.
Claim 24
Dependent Claim
13 words
The composition of claim 13, wherein the lubricating composition is a gear lubricant.
Claim 25
Dependent Claim
40 words
A concentrate comprising (A) a substantially inert organic diluent and (B) from about 1% to about 99% by weight of (i) a salt of a reaction product of (a) at least one dimercaptothiadiazole, and (b) at least one aliphatic olefin.
Claim 26
Dependent Claim
40 words
A concentrate comprising (A) a substantially inert organic diluent and (B) from about 1% to about 99% by weight of (i) a salt of a reaction product of (a) at least one dimercaptothiadiazole, and (b) at least one aliphatic olefin.
Claim 27
Dependent Claim
31 words
A grease composition comprising an oil of lubricating viscosity, a thickener, and a salt of a reaction product of (a) at least one dimercaptothiadiazole and (b) at least one aliphatic olefin.
Claim 28
Dependent Claim
31 words
A grease composition comprising an oil of lubricating viscosity, a thickener, and a salt of a reaction product of (a) at least one dimercaptothiadiazole and (b) at least one aliphatic olefin.
Claim 29
Dependent Claim
25 words
An aqueous composition comprising water and a salt of a reaction product of (a) at least one dimercaptothiadiazole and (b) at least one aliphatic olefin.
Claim 30
Dependent Claim
25 words
An aqueous composition comprising water and a salt of a reaction product of (a) at least one dimercaptothiadiazole and (b) at least one aliphatic olefin.
Claim 31
Dependent Claim
39 words
A gear oil composition comprising (A) a major amount of a gear oil base stock and (B) a metal or ammonium salt of a reaction product of (a) at least one dimercaptothiadiazole and (b) at least one aliphatic olefin.
Claim 32
Dependent Claim
39 words
A gear oil composition comprising (A) a major amount of a gear oil base stock and (B) a metal or ammonium salt of a reaction product of (a) at least one dimercaptothiadiazole and (b) at least one aliphatic olefin.
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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) | 1997-11-28 | 1998-05-30 | 1998-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-28 | 2002-05-30 | 2002-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-28 | 2006-05-30 | 2006-11-29 | $7700.00 | Window Closed / Lapsed |