US5076946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylamine substituted benzotriazole containing lubricants having improved oxidation stability and rust inhibition (PNE-530)
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1990-03-30
•
Granted: 1991-12-31
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Expires: 2010-03-30
Abstract
Abstract The addition of certain alkylamine substituted benzotriazole compounds to a lubricant imparts improved oxidation stability and rust inhibition to the lubricant.
Inventors
- 👤 John W. Frankenfeld
- 👤 Keith U. Ingold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:31
CPC Classifications
C; C10; C10M; C10M133/00; C10M133/02; C10M133/38; C10M133/44
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
41 words
A lubricant composition comprising a major amount of a lubricating base oil and a minor amount of an additive having the formula: ##STR4## wherein R 1 -R 4 may be the same or different and are hydrogen or an alkyl group.
Claim 2
Dependent Claim
41 words
A lubricant composition comprising a major amount of a lubricating base oil and a minor amount of an additive having the formula: ##STR4## wherein R 1 -R 4 may be the same or different and are hydrogen or an alkyl group.
Claim 3
Dependent Claim
23 words
The composition of claim 1 wherein the alkyl group in each of R 1 -R 4 contains from 1 to 20 carbon atoms.
Claim 4
Dependent Claim
19 words
The composition of claim 2 wherein the alkyl group in each of R 1 -R 4 is straight chained.
Claim 5
Dependent Claim
25 words
The composition of claim 2 wherein at least one of R 1 -R 4 is an alkyl group having from 1 to 4 carbon atoms.
Claim 6
Dependent Claim
25 words
The composition of claim 4 wherein at least one of R 1 -R 4 is an alkyl group having from 1 to 3 carbon atoms.
Claim 7
Dependent Claim
25 words
The composition of claim 5 wherein at least two of R 1 -R 4 is an alkyl group having from 1 to 3 carbon atoms.
Claim 8
Dependent Claim
21 words
The composition of claim 1 wherein from about 0.01 to about 5 wt.% of the additive is present in the composition.
Claim 9
Dependent Claim
61 words
A lubricant composition comprising a major amount of an oil of lubricating viscosity and from about 0.01 to about 5 wt.% of an additive having the formula: ##STR5## wherein R 1 is hydrogen or an alkyl group having from 1 to 3 carbon atoms, R 2 is hydrogen, and R 3 and R 4 are each 1 to 3 carbon atoms.
Claim 10
Dependent Claim
61 words
A lubricant composition comprising a major amount of an oil of lubricating viscosity and from about 0.01 to about 5 wt.% of an additive having the formula: ##STR5## wherein R 1 is hydrogen or an alkyl group having from 1 to 3 carbon atoms, R 2 is hydrogen, and R 3 and R 4 are each 1 to 3 carbon atoms.
Claim 11
Dependent Claim
21 words
The composition of claim 8 wherein from about 0.01 to about 2 wt.% of the additive is present in the composition.
Claim 12
Dependent Claim
21 words
The composition of claim 9 wherein from about 0.01 to about 1 wt.% of the additive is present in the composition.
Claim 13
Dependent Claim
16 words
The composition of claim 9 wherein the alkyl group in R 1 is CH 3 .
Claim 14
Dependent Claim
15 words
The composition of claim 11 wherein R 3 or R 4 is CH 3 .
Claim 15
Dependent Claim
16 words
The composition of claim 11 wherein R 3 or R 4 are both CH 3 .
Claim 16
Dependent Claim
21 words
The composition of claim 13 wherein from about 0.02 to about 0.2 wt.% of the additive is present in the composition.
Claim 17
Dependent Claim
21 words
The composition of claim 9 wherein R 1 is hydrogen and R 3 and R 4 are both CH 3 .
Claim 18
Dependent Claim
21 words
The composition of claim 15 wherein from about 0.02 to about 0.2 wt.% of the additive is present in the composition.
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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) | 1994-12-30 | 1995-07-01 | 1995-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-30 | 1999-07-01 | 1999-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-30 | 2003-07-01 | 2003-12-31 | $7700.00 | Window Closed / Lapsed |