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US4529530A
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Triurea grease compositions
Assignee: Chuo Yuka Co Ltd
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Filing: 1983-09-19
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Granted: 1985-07-16
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Expires: 2003-09-19
Abstract
Abstract Triurea grease compositions having excellent oil separation, shear stability, oxidation stability and structural stability of a thickening agent at a high temperature, which contains a triurea compound <IMAGE> wherein R1 is a monovalent aliphatic hydrocarbon radical having 12-24 carbon atoms, R2 is a divalent triazine derivative radical, R3 is a divalent aromatic hydrocarbon radical having 6-15 carbon atoms or the derivative radical thereof, and R4 is at least one of monovalent aliphatic hydrocarbon radicals having 2-24 carbon atoms, derivative radicals thereof, monovalent aromatic hydrocarbon radicals having 6-10 carbon atoms and derivative radicals thereof, as a thickening agent in a usual lubricating base oil.
Inventors
- 👤 Shirow Shimizu
- 👤 Shuichi Takahashi
- 👤 Kazuo Kato
- 👤 Koichi Takeuchi
- 👤 Kozo Iwasaki
- 👤 Motofumi Kurahashi
- 👤 Tetsuo Ichimaru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:35
CPC Classifications
C; C10; C10M; C10M115/00; C10M115/08; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/40; C07D251/48; C07D251/54; C10M2215/00; C10M2215/22; C10M2215/221; C10M2215/222; C10M2217/00; C10M2217/04; C10M2217/044; C10M2217/045
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
100 words
Triurea grease compositions consisting essentially of a major amount of a lubricating base oil and 2-30% by weight of a thickening agent of a triurea compound having the general formula ##STR11## wherein R 1 is a monovalent aliphatic hydrocarbon radical having 12-24 carbon atoms, R 2 is a divalent triazine derivative radical, R 3 is a divalent aromatic hydrocarbon radical having 6-15 carbon atoms or the derivative radical thereof, and R 4 is at least one of monovalent aliphatic hydrocarbon radicals having 2-24 carbon atoms, derivative radicals thereof, monovalent aromatic hydrocarbon radicals having 6-10 carbon atoms and derivative radicals thereof.
Claim 2
Dependent Claim
100 words
Triurea grease compositions consisting essentially of a major amount of a lubricating base oil and 2-30% by weight of a thickening agent of a triurea compound having the general formula ##STR11## wherein R 1 is a monovalent aliphatic hydrocarbon radical having 12-24 carbon atoms, R 2 is a divalent triazine derivative radical, R 3 is a divalent aromatic hydrocarbon radical having 6-15 carbon atoms or the derivative radical thereof, and R 4 is at least one of monovalent aliphatic hydrocarbon radicals having 2-24 carbon atoms, derivative radicals thereof, monovalent aromatic hydrocarbon radicals having 6-10 carbon atoms and derivative radicals thereof.
Claim 3
Dependent Claim
18 words
The composition as claimed in claim 1, wherein an amount of the triurea compound is 4-25% by weight.
Claim 4
Dependent Claim
37 words
The composition as claimed in claim 1, wherein R 1 is selected from the group consisting of dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl, heneicosyl, docosyl, tricosyl and tetracosyl radicals, which have a straight-chain structure.
Claim 5
Dependent Claim
22 words
The composition as claimed in claim 3, wherein R 1 is selected from the group consisting of hexadecyl, octadecyl and eicosyl radicals.
Claim 6
Dependent Claim
30 words
The composition as claimed in claim 1, wherein R 2 is selected from the group consisting of ##STR12## wherein R is a monovalent aliphatic hydrocarbon radical having 12-24 carbon atoms.
Claim 7
Dependent Claim
18 words
The composition as claimed in claim 5, wherein R 2 is selected from the group consisting of ##STR13##
Claim 8
Dependent Claim
18 words
The composition as claimed in claim 1, wherein R 3 is selected from the group consisting of ##STR14##
Claim 9
Dependent Claim
41 words
The composition as claimed in claim 1, wherein R 4 is an aliphatic hydrocarbon radical selected from the group consisting of octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, octadecynyl, nonadecyl, eicosyl, heneicosyl, docosyl, tricosyl and tetracosyl radicals.
Claim 10
Dependent Claim
22 words
The composition as claimed in claim 8, wherein R 4 is selected from the group consisting of hexadecyl, octadecyl and octadecynyl radicals.
Claim 11
Dependent Claim
31 words
The composition as claimed in claim 1, wherein R 4 is an aliphatic hydrocarbon derivative radical selected from the group consisting of monoethanolamine, isopropanolamine, palmitic acid amide and stearic acid amide.
Claim 12
Dependent Claim
38 words
The composition as claimed in claim 1, wherein R 4 is an aromatic hydrocarbon radical or a derivative radical thereof selected from the group consisting of ##STR15## wherein X is a halogen atom of fluorine, chlorine or bromine.
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) | 1988-07-15 | 1989-01-14 | 1989-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-15 | 1993-01-14 | 1993-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-15 | 1997-01-14 | 1997-07-16 | $7700.00 | Window Closed / Lapsed |