Production of carbon blacks
US5190739A · kind A · utility
28Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 1992 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Jan 10, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/19
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for preparing carbon blacks having lower-than-normal structure at a given surface area, and lower-than-normal surface area at a given overall combustion level. The process is carried-out by adding auxiliary hydrocarbons, which is hydrogen or any hydrocarbon having a molar hydrogen-to-carbon ratio greater than the molar hydrogen-to-carbon ratio of the feedstock, to the reaction zone of a carbon black reactor and adjusting the primary combustion and overall combustion so that the SSI of the process is less than zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.