Aryl diurea-thickened greases
US4065395A · kind A · utility
10Cited by
2References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 6, 1976 |
| Grant date | Dec 27, 1977 |
| Priority date | — |
| Expiry date | Dec 6, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A grease composition having improved yield, dropping point, and functional life when used in an antifriction bearing at elevated temperatures comprising a base oil of lubricating viscosity thickened with a specially-defined aryl diurea obtained as the result of reacting critical molar ratios of a mixture of p-toluidine and p-chloroaniline with a toluene diisocyanate. In an especially preferred embodiment the grease composition additionally contains precipitated calcium carbonate in an amount sufficient to obtain a grease having improved e.p. (extreme pressure) properties and an extended functional life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.