Removal of hydrogenation catalyst from polymer solutions by contact with activated carbon
US5089541A · kind A · utility
3Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1990 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Nov 23, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08C2/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process is provided comprising the steps of contacting a polymer solution which contains Group VIII metal hydrogenation catalyst residue with molecular oxygen, contacting the polymer solution with activated carbon, and recovering a polymer cement comprising less than 5 ppm by weight, based on the solution of Group VIII metals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.