Use of a granulate for the removal of liquid, gaseous and/or dissolved constituents from a process stream
US7258796B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Aug 15, 2001 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Sep 28, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J20/3293
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention pertains to the use of a granulate for the removal of liquid, gaseous and/or dissolved organic constituents from a process stream, said granulate consisting of dimensionally stable, porous synthetic particles with an extracting agent having a boiling point higher than 350° C. at 1 bar immobilized therein, characterized in that the granulate is obtainable by suspension polymerization of a monovinyl compound in the presence of a polyvinyl compound, with at least 50% wt. % of the monomer units having an aromatic structure and with the solvent for the monomers acting both as a non-solvent for the copolymer and as an extracting agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.