Lubricating oil composition for refrigerators and method for lubrication with the composition
US6495062B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2001 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | May 5, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/50
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A composition for use in compression refrigeration comprising (A) a refrigerant containing a C1-C8 hydrocarbon as the principal ingredient, and (B) a lubrication base oil primarily formed of a hydrocarbon compound whose non-aromatic-group unsaturation degree is not more than 10% and whose kinematic viscosity is not less than 5 mm2/s or (C) a lubrication base oil whose primary component is a specified polyalkylene glycol derivative having a kinematic viscosity of 5-200 mm2/s at 100° C.; and a method for lubricating compression refrigerators making use of the composition. The composition and the method of the invention achieve improved antiabrasion and stable operation due to efficient lubrication, and as a result, enhanced lubrication performance and sealing effect, as well as improved refrigeration performance can be attained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.