US4129512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating greases
Assignee: BP PLC
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Filing: 1978-02-08
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Granted: 1978-12-12
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Expires: 1998-02-08
Abstract
Abstract The polyurea thickener of a polyurea grease is prepared from: (a) a mixture of aliphatic and aromatic monoamines (b) one or more aromatic di-isocyanates (c) a diamine which is 4,17-dioxaeicosandiamine-1,20 and which has the formula H.sub.2 N--(CH.sub.2).sub.3 --O--(CH.sub.2).sub.12 --O--(CH.sub.2).sub.3 --NH 2
Inventors
- 👤 Alexander W. Kisselow
- 👤 Peter K. Wulk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:10
CPC Classifications
C; C10; C10M; C10M119/00; C10M119/24; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/2805; C08G18/285; C08G18/2865; C08G18/30; C08G18/32; C08G18/3225; C08G18/3228; C10M2205/00; C10M2207/00; C10M2207/04; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/30; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/101; C10M2209/103; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/10; C10M2215/102; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2070/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
127 words
A process for the production of polyurea lubricating greases by the reaction, in a lubricating oil, of (a) a mono-amino component consisting of a mixture of at least one representative of each of the classes of compounds of general formulae: R--NH.sub.2 and R'--NH.sub.2 in which R is a monovalent aliphatic and R' is a monovalent aromatic radical, (b) a diamino component of the general formula: NH.sub.2 --R--O--R'--O--R"--NH.sub.2, in which R, R' and R" are divalent aliphatic radicals, (c) is di-isocyanato component consisting of an aromatic di-isocyanate or a mixture of aromatic di-isocyanates, the two isocyanate groups in the molecules being connected with the same aromatic ring or with different aromatic rings, characterised in that the diamino component is: 4,17-dioxaeicosandiamine-1,20 having the formula H.sub.2 N--(CH.sub.2).sub.3 --O--(CH.sub.2).sub.12 --O--(CH.sub.2).sub.3 --NH.sub.2
Claim 2
Dependent Claim
127 words
A process for the production of polyurea lubricating greases by the reaction, in a lubricating oil, of (a) a mono-amino component consisting of a mixture of at least one representative of each of the classes of compounds of general formulae: R--NH.sub.2 and R'--NH.sub.2 in which R is a monovalent aliphatic and R' is a monovalent aromatic radical, (b) a diamino component of the general formula: NH.sub.2 --R--O--R'--O--R"--NH.sub.2, in which R, R' and R" are divalent aliphatic radicals, (c) is di-isocyanato component consisting of an aromatic di-isocyanate or a mixture of aromatic di-isocyanates, the two isocyanate groups in the molecules being connected with the same aromatic ring or with different aromatic rings, characterised in that the diamino component is: 4,17-dioxaeicosandiamine-1,20 having the formula H.sub.2 N--(CH.sub.2).sub.3 --O--(CH.sub.2).sub.12 --O--(CH.sub.2).sub.3 --NH.sub.2
Claim 3
Dependent Claim
38 words
A process as claimed in claim 1 wherein the components are reacted in a lubricating oil at a temperature of 20° to 150° C. and the mixture obtained is heated to a temperature of 150° to 200° C.
Claim 4
Dependent Claim
25 words
A process as claimed in claim 1 wherein the di-isocyanato component is added to a mixture of mono-amino and diamino components and a lubricating oil.
Claim 5
Dependent Claim
33 words
A process as claimed in claim 1 wherein the molar ratio of mono-amino, diamino and di-isocyanato components is in the range from 2:1:2 to 2:1:2.5 or in the range from 2:2:3 to 2:2:3.75.
Claim 6
Dependent Claim
49 words
A process as claimed in claim 1 wherein, in the monoamino component, the molar ratio of aliphatic monoamine or aliphatic monoamines of the general formula: R--NH.sub.2 to aromatic monoamine or aromatic monoamines of the general formula: R'--NH.sub.2 is in the range from 6:4 to 4:6 and preferably is 1:1.
Claim 7
Dependent Claim
27 words
A process as claimed in claim 1 wherein the aliphatic monoamine is a straight-chain mono-amine with 12 to 24 carbon atoms, or a mixture of such mono-amines.
Claim 8
Dependent Claim
20 words
A process as claimed in claim 1 wherein the aromatic mono-amine is aliline, toluidine, xylidine or mixtures of such mono-amines.
Claim 9
Dependent Claim
22 words
A process as claimed in claim 1 wherein the di-isocyanato component is phenylene, toluylene, ditolylene, naphthylene or diphenylene-methane di-isocyanate, or mixtures thereof.
Claim 10
Dependent Claim
61 words
A lubricating grease that has been prepared by the reaction of (a) a mono-amino component consisting of a mixture of at least one representative of each of the classes of compounds of general formulae: R--NH.sub.2 and R'--NH.sub.2 in which R is a monovalent aliphatic and R' is a monovalent aromatic radical, (b) a diamino component of the general formula: NH.sub.2 --R--O--R'--O--R"--NH.sub.2,
Claim 11
Dependent Claim
61 words
A lubricating grease that has been prepared by the reaction of (a) a mono-amino component consisting of a mixture of at least one representative of each of the classes of compounds of general formulae: R--NH.sub.2 and R'--NH.sub.2 in which R is a monovalent aliphatic and R' is a monovalent aromatic radical, (b) a diamino component of the general formula: NH.sub.2 --R--O--R'--O--R"--NH.sub.2,
Claim 12
Dependent Claim
51 words
in which R, R' and R" are divalent aliphatic radicals, (c) a di-isocyanato component consisting of an aromatic di-isocyanate or a mixture of aromatic di-isocyanates, the two isocyanate groups in the molecules being connected with the same aromatic ring or with different aromatic rings, characterised in that the diamino component is:
Claim 13
Dependent Claim
51 words
in which R, R' and R" are divalent aliphatic radicals, (c) a di-isocyanato component consisting of an aromatic di-isocyanate or a mixture of aromatic di-isocyanates, the two isocyanate groups in the molecules being connected with the same aromatic ring or with different aromatic rings, characterised in that the diamino component is:
Claim 14
Dependent Claim
9 words
17-dioxaeicosandiamine-1,20 having the formula H.sub.2 N--(CH.sub.2).sub.3 --O--(CH.sub.2).sub.12 --O--(CH.sub.2).sub.3 --NH.sub.2.
Claim 15
Dependent Claim
9 words
17-dioxaeicosandiamine-1,20 having the formula H.sub.2 N--(CH.sub.2).sub.3 --O--(CH.sub.2).sub.12 --O--(CH.sub.2).sub.3 --NH.sub.2.
References Cited (Backward Citations)
US3870642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-11 | 1982-06-12 | 1982-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-11 | 1986-06-12 | 1986-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-11 | 1990-06-12 | 1990-12-12 | $7700.00 | Window Closed / Lapsed |