Bearing grease composition for motor
US6265361A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2000 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Mar 2, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/046
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A grease composition with which low torque property, low noise property and low volatilization property can be maintained, is provided. The grease composition is characterized in that it contains: PA1 (A) an alkali metal salts and/or an alkaline earth metal salt synthesized from a hydroxide of an alkali metal or an alkaline earth metal, and a higher fatty acid having 10 or more carbon atoms or a higher hydroxyfatty acid having at least one hydroxyl group and 10 or more carbon atoms; PA1 (B) a carbonate compound represented by the general formula: ##STR1## (R and R' represent a branched alkyl group having 13-15 carbon atoms, and may be same or different); and PA1 (C) at least one kind of an ester-based synthetic oil selected from the group consisting of a diester-based synthetic oil represented by the general formula (i): EQU ROCO (CH.sub.2).sub.n COOR' (i) (R and R' represent an alkyl group having 3-18 carbon atoms, and may be the same or different, and n is 3-12); PA1 a triester-based synthetic oil represented by the general formula (ii): EQU C.sub.2 H.sub.5 C(CH.sub.2 OCOR).sub.3 (ii) (R represents an alkyl group having 3-10 carbon atoms); PA1 a tetraester-based synthetic oil rep…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.