Grease composition for bearing of wind power generator
US8859475B2 · kind B2 · utility
1Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2010 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Oct 15, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/72
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides a grease composition for bearings used in wind power generators, containing a base oil which has a kinematic viscosity of 10 to 70 mm2/s at 40° C. and a pour point of −40° C. or less, and a diurea compound as a thickener, for example, a diurea compound represented by formula (1) where R1 and R2 are both C8-alkyl group. The grease composition for bearings used in wind power generators according to the invention can meet the requirements in terms of the seizure life and the pumpability as well as the fatigue life (flaking life).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.