Patent US4261844A successfully refreshed from Google Patents.
US4261844A
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Grease compositions
Assignee: Shell USA Inc
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Filing: 1979-12-21
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Granted: 1981-04-14
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Expires: 1999-12-21
Abstract
Abstract Polyurea grease compositions containing the reaction product of certain diisocyanates and specified amines, particularly N,N-bis(3-amino propyl)methylamine, and having improved mechanical properties, are disclosed.
Inventors
- 👤 Gerard P. Caruso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:53
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/04; C07C275/06; C07C275/16; C07C275/20; C07C275/24; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/2805; C08G18/285; C08G18/2865; C08G18/30; C08G18/32; C08G18/3225; C08G18/3228; C10; C10M; C10M119/00; C10M119/24; C10M2215/00; C10M2215/10; C10M2215/102; C10M2217/00; C10M2217/04; C10M2217/044; C10M2217/045; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
106 words
A grease composition comprising a major portion of a lubricating oil base vehicle and a minor amount of the product obtained by reacting a compound (A) having the formula NH 2 R 1 , wherein R 1 is hydrocarbyl containing 3 to 30 carbon atoms, a compound (B) having the formula NH 2 --C 3 H 6 NR 3 C 3 H 6 NH 2 wherein R 3 is methyl, ethyl, or n-propyl, and a compound (C) having the formula OCN--R 2 --NCO, wherein R 2 is hydrocarbylene having from 2 to 30 carbon atoms, the ratio of mols of (A): (B): (C) being about 2:1:2.
Claim 2
Dependent Claim
106 words
A grease composition comprising a major portion of a lubricating oil base vehicle and a minor amount of the product obtained by reacting a compound (A) having the formula NH 2 R 1 , wherein R 1 is hydrocarbyl containing 3 to 30 carbon atoms, a compound (B) having the formula NH 2 --C 3 H 6 NR 3 C 3 H 6 NH 2 wherein R 3 is methyl, ethyl, or n-propyl, and a compound (C) having the formula OCN--R 2 --NCO, wherein R 2 is hydrocarbylene having from 2 to 30 carbon atoms, the ratio of mols of (A): (B): (C) being about 2:1:2.
Claim 3
Dependent Claim
31 words
The composition of claim 1 wherein R 1 is aliphatic containing 10 to 30 carbon atoms, R 2 is alkylarylene containing 8 through 12 carbon atoms, and R 3 is methyl.
Claim 4
Dependent Claim
15 words
The composition of claim 2 wherein R 1 is stearyl and R 2 is tolylyl.
Claim 5
Dependent Claim
109 words
A grease composition comprising a major portion of a lubricating oil base vehicle and a minor amount of the product obtained by mixing a compound (A) having the formula NH 2 R 1 , wherein R 1 is hydrocarbyl containing 3 to 30 carbon atoms and a compound (B) having the formula NH 2 --C 3 H 6 NR 3 C 3 H 6 NH 2 , wherein R 3 is methyl, ethyl, or n-propyl, and adding a compound (C) having the formula OCN--R 2 --NCO, wherein R 2 is hydrocarbylene having from 2 to 30 carbon atoms, the ratio of mols of (A): (B): (C) being about 2:1:2.
Claim 6
Dependent Claim
109 words
A grease composition comprising a major portion of a lubricating oil base vehicle and a minor amount of the product obtained by mixing a compound (A) having the formula NH 2 R 1 , wherein R 1 is hydrocarbyl containing 3 to 30 carbon atoms and a compound (B) having the formula NH 2 --C 3 H 6 NR 3 C 3 H 6 NH 2 , wherein R 3 is methyl, ethyl, or n-propyl, and adding a compound (C) having the formula OCN--R 2 --NCO, wherein R 2 is hydrocarbylene having from 2 to 30 carbon atoms, the ratio of mols of (A): (B): (C) being about 2:1:2.
Claim 7
Dependent Claim
31 words
The composition of claim 4 wherein R 1 is aliphatic containing 10 to 30 carbon atoms, R 2 is alkylarylene containing 8 through 12 carbon atoms, and R 3 is methyl.
Claim 8
Dependent Claim
15 words
A composition of claim 5 wherein R 1 is stearyl and R 2 is tolylyl.
Claim 9
Dependent Claim
109 words
A grease composition comprising a major portion of a lubricating oil base vehicle and a minor amount of the product obtained by reacting in the vehicle a compound (A) having the formula NH 2 R 1 , wherein R 1 is hydrocarbyl containing 3 to 30 carbon atoms, a compound (B) having the formula NH 2 --C 3 H 6 NR 3 C 3 H 6 NH 2 wherein R 3 is methyl, ethyl, or n-propyl, and a compound (C) having the formula OCN--R 2 --NCO, wherein R 2 is hydrocarbylene having from 2 to 30 carbon atoms, the ratio of mols of (A): (B): (C) being about 2:1:2.
Claim 10
Dependent Claim
109 words
A grease composition comprising a major portion of a lubricating oil base vehicle and a minor amount of the product obtained by reacting in the vehicle a compound (A) having the formula NH 2 R 1 , wherein R 1 is hydrocarbyl containing 3 to 30 carbon atoms, a compound (B) having the formula NH 2 --C 3 H 6 NR 3 C 3 H 6 NH 2 wherein R 3 is methyl, ethyl, or n-propyl, and a compound (C) having the formula OCN--R 2 --NCO, wherein R 2 is hydrocarbylene having from 2 to 30 carbon atoms, the ratio of mols of (A): (B): (C) being about 2:1:2.
Claim 11
Dependent Claim
31 words
The composition of claim 7 wherein R 1 is aliphatic containing 10 to 30 carbon atoms, R 2 is alkylarylene containing 8 through 12 carbon atoms, and R 3 is methyl.
Claim 12
Dependent Claim
15 words
The composition of claim 8 wherein R 1 is stearyl and R 2 is tolylyl.
Claim 13
Dependent Claim
112 words
A grease composition comprising a major portion of a lubricating oil base vehicle and a minor amount of the product obtained by mixing in the vehicle a compound (A) having the formula NH 2 R 1 , wherein R 1 is hydrocarbyl containing 3 to 30 carbon atoms and a compound (B) having the formula NH 2 --C 3 H 6 NR 3 C 3 H 6 NH 2 , wherein R 3 is methyl, ethyl, or n-propyl, and adding a compound (C) having the formula OCN--R 2 --NCO, wherein R 2 is hydrocarbylene having from 2 to 30 carbon atoms, the ratio of mols of (A): (B): (C) being about 2:1:2.
Claim 14
Dependent Claim
112 words
A grease composition comprising a major portion of a lubricating oil base vehicle and a minor amount of the product obtained by mixing in the vehicle a compound (A) having the formula NH 2 R 1 , wherein R 1 is hydrocarbyl containing 3 to 30 carbon atoms and a compound (B) having the formula NH 2 --C 3 H 6 NR 3 C 3 H 6 NH 2 , wherein R 3 is methyl, ethyl, or n-propyl, and adding a compound (C) having the formula OCN--R 2 --NCO, wherein R 2 is hydrocarbylene having from 2 to 30 carbon atoms, the ratio of mols of (A): (B): (C) being about 2:1:2.
Claim 15
Dependent Claim
31 words
The composition of claim 10 wherein R 1 is aliphatic containing 10 to 30 carbon atoms, R 2 is alkylarylene containing 8 through 12 carbon atoms, and R 3 is methyl.
Claim 16
Dependent Claim
15 words
The composition of claim 11 wherein R 1 is stearyl and R 2 is tolylyl.
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) | 1984-04-13 | 1984-10-13 | 1985-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-13 | 1988-10-13 | 1989-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-13 | 1992-10-13 | 1993-04-14 | $7700.00 | Window Closed / Lapsed |