US3894958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixed secondary alkyl amide synthetic lubricant compositions
Assignee: Texaco Inc
•
Filing: 1973-11-05
•
Granted: 1975-07-15
•
Expires: 1993-11-05
Abstract
Abstract Mixtures of amides of secondary alkyl amines for use in lubricant compositions.
Inventors
- 👤 Frederic C Mccoy
- 👤 Larry D Grina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:48
CPC Classifications
C; C10; C10M; C10M169/00; C10M2205/00; C10M2205/02; C10M2205/026; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/28; C10M2219/00; C10M2219/10; C10M2219/104; C10M2219/108; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2040/00; C10N2040/02; C10N2040/08
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
14 words
A SYNTHETIC LUBRICANT OIL COMPOSITION COMPRISING A MIXTURE OF AMIDES SELECTED FROM THE FORMULAE:
Claim 2
Dependent Claim
14 words
A SYNTHETIC LUBRICANT OIL COMPOSITION COMPRISING A MIXTURE OF AMIDES SELECTED FROM THE FORMULAE:
Claim 3
Dependent Claim
27 words
A lubricant oil composition comprising a mixture of amides as claimed in claim 1 wherein the amides in said mixture contain from 10 to 14 carbon atoms.
Claim 4
Dependent Claim
19 words
A lubricant oil composition according to claim 1 wherein said mixture constitutes at least thirty percent by volume thereof.
Claim 5
Dependent Claim
17 words
A lubricant oil composition according to claim 3 wherein said mixture of amides has the general formula:
Claim 6
Dependent Claim
19 words
A lubricant oil composition according to claim 3 wherein said mixture of amides is a diamide of the formula:
Claim 7
Dependent Claim
23 words
A lubricant oil composition according to claim 3 wherein said amide is present in an amount by volume of at least forty percent.
Claim 8
Dependent Claim
19 words
A lubricant oil composition according to claim 3 where said amide is present in a major amount by volume.
Claim 9
Dependent Claim
20 words
A lubricant oil composition according to claim 6 wherein said amide is the formamide of (C10-C14 secondary alkyl) primary amines.
Claim 10
Dependent Claim
20 words
A lubricant oil composition according to claim 6 wherein said amide is the formamide of di(C10-C14 secondary alkyl) secondary amines.
Claim 11
Dependent Claim
20 words
A lubricant oil composition according to claim 6 wherein said amide is the acetamide of (C10-C14 secondary alkyl) primary amines.
Claim 12
Dependent Claim
20 words
A lubricant oil composition according to claim 6 wherein said amide is the acetamide of di(C10-C14 secondary alkyl) secondary amines.
Claim 13
Dependent Claim
20 words
A lubricant oil composition according to claim 6 wherein said amide is the acetamide of methyl (C10-C14 secondary alkyl) amines.
Claim 14
Dependent Claim
19 words
A lubricant oil composition according to claim 6 wherein said amide is the propionamide of di(C10-C14 secondary alkyl) amines.
Claim 15
Dependent Claim
19 words
A lubricant oil composition according to claim 6 wherein said amide is the butyramide of di(C10-C14 secondary alkyl) amines.
Claim 16
Dependent Claim
20 words
A lubricant oil composition according to claim 6 wherein said diamide is di(C10-C14 secondary alkyl) secondary diamide of sebacic acid.
Claim 17
Dependent Claim
20 words
A lubricant oil composition according to claim 6 wherein said diamide is di(C10-C14 secondary alkyl) secondary diamide of sebacic acid.
Claim 18
Dependent Claim
21 words
A lubricant oil composition according to claim 6 wherein said diamide is methyl (C10-C14 secondary alkyl) secondary diamide of oxalic acid.
Claim 19
Dependent Claim
20 words
A lubricant oil composition according to claim 6 wherein said diamide is di(C10-C14 secondary alkyl) secondary diamide of succinic acid.
Claim 20
Dependent Claim
27 words
A lubricant oil composition according to claim 3 wherein the remainder of said composition comprises a lubricant thickener selected from the group consisting of polybutene and polymethacrylate.
Claim 21
Dependent Claim
13 words
A lubricant oil composition according to claim 19 wherein said thickener is polybutene.
Claim 22
Dependent Claim
24 words
A lubricant oil composition according to claim 20 wherein said thickener is a polybutene having a molecular weight of from about 1900 to 2800.
Claim 23
Dependent Claim
14 words
A lubricant oil composition according to claim 19 wherein said thickener is a polymethacrylate.
Claim 24
Dependent Claim
22 words
A lubricant oil composition according to claim 19 wherein said thickener is a mixture of a methacrylate copolymer and a mineral oil.
Claim 25
Dependent Claim
25 words
A lubricant oil composition according to claim 23 wherein the ratio of methacrylate copolymer to mineral oil is about 35 percent to about 65 percent.
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) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |