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US3665038A
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Process for preparing carbon-carbon coupled dimers of n-arylnaphthylamines
Assignee: Mobil Oil AS
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Filing: 1969-06-12
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Granted: 1972-05-23
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Expires: 1989-06-12
Abstract
Abstract Carbon-carbon coupled dimers of N-arylnaphthylamines are prepared by thermally decomposing an N-nitroso-N-arylnaphthylamine. The aryl portion of such material may be phenyl, naphthyl or an alkyl-, alkoxy- or halogen-substituted member of these. The compounds thus produced are useful as antioxidants for a variety of organic materials. These include polyurethane and polyolefin polymers as well as lubricating oils.
Inventors
- 👤 Robert F Bridger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:22
CPC Classifications
C; C10; C10M; C10M3/00; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18; C10M2205/00; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/103; C10M2209/109; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/066; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
18 words
The process of claim 1 in which the compound used is N-nitroso-N-phenyl-2-naphthylamine and the dimer produced is 1,1''-bis(N-phenyl-2-naphthylamine).
Claim 2
Dependent Claim
18 words
The process of claim 1 in which the compound used is N-nitroso-di-2-naphthylamine and the dimer produced is 1,1''-bis(di-2-naphthylamine).
Claim 3
Dependent Claim
18 words
The process of claim 1 in which the compound used is N-nitroso-N-phenyl-1-naphthylamine and the dimer produced is 4,4''-bis(N-phenyl-1-naphthylamine).
Claim 4
Dependent Claim
17 words
The process of claim 1 wherein the temperature is from about 100* C. to about 200* C.
Claim 5
Dependent Claim
11 words
The process of claim 1 in which the solvent is xylene.
Claim 6
Dependent Claim
13 words
The process of claim 1 in which the solvent is a pentaerythritol ester.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |