Urea dewaxing of naphthene oils
US4504376A · kind A · utility
2Cited by
11References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1984 |
| Grant date | Mar 12, 1985 |
| Priority date | — |
| Expiry date | Apr 9, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G73/24
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In an improved urea dewaxing process a urea/alcohol slurry chilled to 60.degree. F. to 65.degree. F. is added to a naphthenic distillate chilled to 60.degree. F. to 65.degree. F. to produce a refrigerator oil with improved low temperature properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.