Preparation of petroleum pitch
US4039423A · kind A · utility
3Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1975 |
| Grant date | Aug 2, 1977 |
| Priority date | — |
| Expiry date | Mar 10, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10C3/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process having a particular sequence of steps, each under specified conditions, for preparing a petroleum pitch binder suitable for electrodes used in smelting aluminum is disclosed. In the essential steps of the invention a decant oil petroleum fraction is heat treated under pressure, the treated material is flashed to a lower pressure, and finally the material is oxy-activated under elevated temperature conditions to form a petroleum pitch having the desired properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.