Method for haze mitigation and filterability improvement for base stocks
US8394256B2 · kind B2 · utility
0Cited by
18References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2009 |
| Grant date | Mar 12, 2013 |
| Priority date | — |
| Expiry date | Jun 13, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention is a process for removing waxy haze from and improving the filterability of base stocks including heavy mineral oil base stocks, gas-to-liquids (GTL) and hydrodewaxed or hydroisomerized waxy feed basestocks by filtering the waxy haze causing particles out of the base stock employing a filter characterized by a high surface area of pores accessible to the haze wax particles which have particles dimensions of no more than about 5 microns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.