| 摘要 |
A process for the recovery of copper catalyst from the polymerization of polyphenylene ethers comprises forming a complex of the catalyst and an amino acid chelating agent, separating the complex from the polymerization mixture, contacting the complex with a reducing sugar in an alkaline medium to precipitate the copper as an oxide and, optionally, acidifying the alkaline medium to precipitate and recover the amino acid chelating agent. |
