US4217233A
Expired / Lapsed
US
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Epithio compounds as additives for lubricants
Assignee: BASF Corp
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Filing: 1978-08-22
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Granted: 1980-08-12
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Expires: 1998-08-22
Abstract
Abstract Epithio compounds or mercaptans of the formula I ##STR1## wherein X is an oxygen or sulfur atom, --CH 2 --, --CH(R 1 )--, --COO--, --NH-- or --NR 1 --, each of Y and Z is hydrogen or together they are a direct bond, Q is hydrogen if Y and Z together are a direct bond, or is --OH, --SH, --OR 1 , --SR 1 , --OOCR 1 , --S--CH 2 ) n OH, --S--CH 2 ) n COOR 1 , --NHR 1 or --N(R 1 ) 2 , n is an integer from 1 to 10, each of R and R 1 independently is a cyclic or acyclic hydrocarbon radical of aliphatic or aromatic character containing 4 to 30 carbon atoms which can be interrupted by oxygen or sulfur, with the proviso that the groups R and R 1 contain a total number of 8 to 30 carbon atoms. These compounds have excellent suitability for use as additives for lubricants, especially as extreme pressure and antiwear additives.
Inventors
- 👤 Peter Michaelis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:22
CPC Classifications
C; C10; C10M; C10M135/00; C07; C07C; C07C323/00; C07D; C07D331/00; C07D331/02; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/22; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/025; C10M2207/026; C10M2207/027; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/129; C10M2207/16; C10M2207/22; C10M2207/28; C10M2207/287; C10M2207/289; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2211/00; C10M2211/08; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/044; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/22; C10M2215/221; C10M2215/223; C10M2215/224; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2219/084; C10M2219/085; C10M2219/087; C10M2219/089; C10M2219/09; C10M2219/10; C10M2219/104; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/043; C10M2223/045; C10M2223/06; C10M2223/065; C10N; C10N2010/00; C10N2010/04; C10N2010/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
40 words
An epithio compound of the formula I ##STR50## wherein X is an oxygen or sulfur atom, Y and Z are together a direct bond, Q is hydrogen and R is branched or unbranched alkyl of 8 to 22 carbon atoms.
Claim 2
Dependent Claim
40 words
An epithio compound of the formula I ##STR50## wherein X is an oxygen or sulfur atom, Y and Z are together a direct bond, Q is hydrogen and R is branched or unbranched alkyl of 8 to 22 carbon atoms.
Claim 3
Dependent Claim
38 words
An epithio compound according to claim 1 of the formula I, wherein X is an oxygen atom, Y and Z are together a direct bond, Q is hydrogen and R is alkyl of 8 to 22 carbon atoms.
Claim 4
Dependent Claim
27 words
An epithio compound according to claim 1 of the formula II ##STR51## wherein R is branched C 8 -C 18 alkyl and X is an oxygen atom.
Claim 5
Dependent Claim
11 words
An epithio compound according to claim 1 of the formula ##STR52##
Claim 6
Dependent Claim
25 words
An epithio compound according to claim 1 of the formula ##STR53## wherein R" is a mixture of alkyl groups containing 12 to 15 carbon atoms.
Claim 7
Dependent Claim
28 words
A composition of matter containing a mineral or synthetic lubricant or mixture thereof and an effective amount of a compound of the formula I according to claim 1.
Claim 8
Dependent Claim
20 words
A process for stabilizing lubricant compositions which comprises adding an effective amount of an epithio compound according to claim 1.
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) | 1983-08-12 | 1984-02-11 | 1984-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-12 | 1988-02-11 | 1988-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-12 | 1992-02-11 | 1992-08-12 | $7700.00 | Window Closed / Lapsed |