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Co. offers something similar with its RTM. system, launched last May. Here also, a polymer-linked ligand immobilizes the metal by coordination. However, the polymer is soluble at the reaction temperature so that coupling occurs in a homogeneous system, explains business development manager. At the end of the reaction, when the system cools, it separates into two layers. Because the polymers are designed specifically for particular reaction systems, the polymer pulls the ligand and coordinated metal into one layer, leaving the product in the other layer. The catalyst is recovered by liquid extraction. |
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