Patent ID: 7138485
Filing Date: 2006-11-21
Classification: C08F

Abstract:
1. A process for removing heavy-metal-containing catalysts or catalyst residues from an organic polymer phase selected from the group consisting of polymers, oligomers, solutions of polymers, and solutions of oligomers, comprising adding, in a first step of the process, from 0.05 to 20% by weight, based on the weight of the organic polymer phase, of an aqueous phase to the organic polymer phase and forming an emulsion or suspension thereof and, in a second step, adding an amount of from 0.05 to 20% by weight, based on the initial weight of the organic polymer phase, an adsorbent agent material to the emulsion or suspension and then filtering off the adsorbent agent material, whereby heavy-metal-containing catalysts or catalyst residues are removed.