Petroleum pitch preparation
US4013540A · kind A · utility
5Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1975 |
| Grant date | Mar 22, 1977 |
| Priority date | — |
| Expiry date | Mar 10, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10C3/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process having a specified sequence of steps for preparing a petroleum pitch binder suitable for electrodes used in smelting aluminum is disclosed, in which a decant oil petroleum fraction is oxy-activated under specified conditions of temperature, pressure, and time, then heat treated under other specified conditions, and finally distilled under specified conditions to form a petroleum pitch having desired properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.