Method for enhancing catalytic activity
US4357232A · kind A · utility
13Cited by
12References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 15, 1981 |
| Grant date | Nov 2, 1982 |
| Priority date | — |
| Expiry date | Jan 15, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Catalytically dewaxed lubricating base stock oils that have improved resistance to oxidation are produced by pretreating the waxy furfural raffinate with a zeolite sorbent prior to dewaxing with a zeolite catalyst such as ZSM-5, and conducting the dewaxing at a reduced temperature not to exceed about 675.degree.-700.degree. F.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.