POLYSTYRENE-IMMOBILIZED POLY(ETHYLENE IMINE) CHAINS - A NEW CLASS OF GRAFT-COPOLYMERS .1. SYNTHESIS AND CHARACTERIZATION

This work reports the synthesis and characterization of a new polystyr ene-based graft copolymer. By immobilization of transition metal compl exes it shows high potential for selective heterogeneous hydrogenation under outstanding mild conditions. Here, a branched poly(ethylene imi ne) with average M(r) around 3 x 10(4) was used to be grafted on acety lated polystyrene beads. C-13 solid state NMR investigations demonstra te a high mobility and flexibility of the chains of this spacer due to branching as compared to, e.g., linear poly(ethylene glycol) with M(r ) around 3000.