US4761482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terpene derivatives of 2,5-dimercapto-1,3,4-thiadiazoles and lubricating compositions containing same
Assignee: Vanderbilt Chemicals LLC
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Filing: 1987-04-23
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Granted: 1988-08-02
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Expires: 2007-04-23
Abstract
Abstract Disclosed are reaction products of terpene compounds and 2,5-dimercapto-1,3,4-thiadiazole. The reaction products are useful as antiwear agents and antioxidants in lubricating compositions.
Inventors
- 👤 Thomas J. Karol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:28
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; C07D285/125; C10; C10M; C10M135/00; C10M135/32; C10M135/36; C10M173/00; C10M173/02; C10M2201/00; C10M2201/02; C10M2219/00; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/08; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
46 words
A compound having the structural formula ##STR6## wherein R represents pinene residue having the structural formula ##STR7## and limonene residue having the structural formula ##STR8## and R' represents alkyl, hydroxyalkyl, alkylthio, phenylalkyl and alkylated phenylalkyl groups wherein the alkyl group contains 1 to 50 carbon atoms.
Claim 2
Dependent Claim
46 words
A compound having the structural formula ##STR6## wherein R represents pinene residue having the structural formula ##STR7## and limonene residue having the structural formula ##STR8## and R' represents alkyl, hydroxyalkyl, alkylthio, phenylalkyl and alkylated phenylalkyl groups wherein the alkyl group contains 1 to 50 carbon atoms.
Claim 3
Dependent Claim
79 words
A composition comprising a major proportion of oil of lubricating viscosity wherein said oil is a petroleum hydrocarbon oil or a synthetic oil and from about 0.01 to 10 percent by weight of a compound having the structural formula ##STR9## wherein R represents pinene residue having the structural formula ##STR10## and limonene residue having the structural formula ##STR11## and R' represents alkyl, hydroxyalkyl, alkylthio, phenylalkyl and alkylated phenyl groups wherein the alkyl group contains 1 to 50 carbon atoms.
Claim 4
Dependent Claim
79 words
A composition comprising a major proportion of oil of lubricating viscosity wherein said oil is a petroleum hydrocarbon oil or a synthetic oil and from about 0.01 to 10 percent by weight of a compound having the structural formula ##STR9## wherein R represents pinene residue having the structural formula ##STR10## and limonene residue having the structural formula ##STR11## and R' represents alkyl, hydroxyalkyl, alkylthio, phenylalkyl and alkylated phenyl groups wherein the alkyl group contains 1 to 50 carbon atoms.
Claim 5
Dependent Claim
37 words
A composition according to claim 2 which further contains up to 1.0 percent by weight of zinc dihydrocarbylphosphorodithioate wherein the hydrocarbyl groups are selected from the group consisting of alkyl, alkenyl, aryl, aralkyl, alkaryl and cycloaliphatic groups.
Claim 6
Dependent Claim
88 words
A composition comprising at least 40 percent by weight of water, from 0 to 15 percent by weight of petroleum hydrocarbon oil or a synthetic oil and from about 0.01 to 10 percent by weight of a compound having the structural formula ##STR12## wherein R represents pinene residue having the structural formula ##STR13## and limonene residue having the structural formula ##STR14## and R 2 may be same as R or hydrogen, alkyl, hydroxyalkylthio, phenylalkyl and alkylated phenylalkyl groups wherein the alkyl group contains 1 to 50 carbon atoms.
Claim 7
Dependent Claim
88 words
A composition comprising at least 40 percent by weight of water, from 0 to 15 percent by weight of petroleum hydrocarbon oil or a synthetic oil and from about 0.01 to 10 percent by weight of a compound having the structural formula ##STR12## wherein R represents pinene residue having the structural formula ##STR13## and limonene residue having the structural formula ##STR14## and R 2 may be same as R or hydrogen, alkyl, hydroxyalkylthio, phenylalkyl and alkylated phenylalkyl groups wherein the alkyl group contains 1 to 50 carbon atoms.
Claim 8
Dependent Claim
37 words
A composition according to claim 4 which further contains up to 1.0 percent by weight of zinc dihydrocarbylphosphorodithioate wherein the hydrocarbyl groups are selected from the group consisting of alkyl, alkenyl, aryl, aralkyl, alkaryl and cycloaliphatic groups.
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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) | 1991-08-02 | 1992-02-01 | 1992-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-02 | 1996-02-01 | 1996-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-02 | 2000-02-01 | 2000-08-02 | $7700.00 | Window Closed / Lapsed |