Process for removal of catalyst from polyphenylene ethers
US3951917A · kind A · utility
16Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1974 |
| Grant date | Apr 20, 1976 |
| Priority date | — |
| Expiry date | Jul 23, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/46
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A novel process is disclosed for the removal of the metallic catalyst from a polymerization mixture which is based on the use of a salt of ethylenediamine tetraacetic acid and an antisolvent without phase separation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.