US4225448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper thiobis(alkylphenols) and antioxidant compositions thereof
Assignee: Mobil Oil AS
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Filing: 1978-08-07
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Granted: 1980-09-30
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Expires: 1998-08-07
Abstract
Abstract Novel copper thiobis(alkylphenol-phenolate) complexes are effective antioxidant additives for various organic media such as oils of lubricating viscosity and plastics. Additionally these novel copper organo-sulfur compounds are highly useful as energy quenchers and antisludging agents in a variety of organic substrates.
Inventors
- 👤 Milton Braid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:02
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/18; C07; C07F; C07F1/00; C07F1/005; C09; C09K; C09K15/00; C09K15/04; C09K15/32; C09K15/326; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/028; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/026; C10M2207/04; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2211/00; C10M2211/02; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2215/10; C10M2215/102; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/086; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2227/00; C10M2227/02; C10M2227/04; C10M2227/08; C10M2227/081; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2040/00; C10N2040/02; C10N2040/08; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
94 words
A composition comprising a major proportion of an organic medium normally susceptible to oxidative degradation and a minor amount sufficient to impart antioxidant properties thereto of a copper organo-sulfur-containing complex wherein said copper organo-sulfur-containing complex has the following general structures: ##STR2## or mixtures thereof in which R is 1,1,3,3-tetramethylbutyl or a 4-t-octyl group and R' is either hydrogen or an alkyl group having from 1-8 carbon atoms in any isomeric arrangement except that the carbon atom bonded (or attached) to the ring carbon atom is attached to no more than two other carbon atoms.
Claim 2
Dependent Claim
94 words
A composition comprising a major proportion of an organic medium normally susceptible to oxidative degradation and a minor amount sufficient to impart antioxidant properties thereto of a copper organo-sulfur-containing complex wherein said copper organo-sulfur-containing complex has the following general structures: ##STR2## or mixtures thereof in which R is 1,1,3,3-tetramethylbutyl or a 4-t-octyl group and R' is either hydrogen or an alkyl group having from 1-8 carbon atoms in any isomeric arrangement except that the carbon atom bonded (or attached) to the ring carbon atom is attached to no more than two other carbon atoms.
Claim 3
Dependent Claim
17 words
The composition of claim 1 in which each R of said organo-sulfur complex is a 4-t-octyl group.
Claim 4
Dependent Claim
17 words
The composition of claim 1 in which each R of said organo-sulfur complex is a 1,1,3,3-tetramethylbutyl group.
Claim 5
Dependent Claim
18 words
The composition of claims 1 or 3 in which the organo-sulfur-containing complex is in accordance with structure I.
Claim 6
Dependent Claim
19 words
The composition of claims 1 or 3 in which the organo-sulfur containing complex is in accordance with structure II.
Claim 7
Dependent Claim
19 words
The composition of claims 1 or 3 in which the organo-sulfur containing complex is in accordance with structure III.
Claim 8
Dependent Claim
19 words
The composition of claims 1 or 3 in which the organo-sulfur containing complex is in accordance with structure IV.
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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) | 1983-09-30 | 1984-03-31 | 1984-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-30 | 1988-03-31 | 1988-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-30 | 1992-03-31 | 1992-09-30 | $7700.00 | Window Closed / Lapsed |