Lubricating oil containing aromatic ether compounds
US5639719A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1996 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | Mar 6, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/50
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A lubricating oil containing an aromatic ether compound represented by the general formula, (R.sup.1).sub.n Ph--O-- (R.sup.2 O).sub.m --R.sup.3, wherein R.sup.1 stands each independently for a particular hydrocarbon group, an etheric oxygen-containing hydrocarbon group, an alkoxyl group, or a halogen-substituted hydrocarbon group, R.sup.2 stands each independently for an alkylene group having 2 to 4 carbon atoms, R.sup.3 stands for a hydrocarbon group having 1 to 12 carbon atoms, Ph stands for an aromatic substituent, n stands for an integer of from 1 to 5, and m stands for an integer of from 1 to 30. The lubricating oil has excellent lubricating property, cleaning property and electrically insulating property, exhibits excellent sealing property owing to its high viscosity and wear resistance, and further exhibits excellent compatibility with R-134a, etc. The lubricating oil can be favorably used for the refrigerators such as of electric refrigerators and room air conditioners that use R-134a as a coolant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.