Characterization of Polymer-Supported Rare-Earth Metal Complexes and Their Catalytic Behavior in Polymerization of Conjugated Dienes

Publisher Website
Google Scholar
Abstract
The polymerization and catalytic behavior of catalyst systems composed of polymer-supported rare-earth metals were investigated. The catalyst systems show high catalytic activity and stereospecificity for butadiene polymerization. The catalytic efficiency for SMC (styrene-2-(methylsul-finyl)ethyl methacrylate copolymer).NdCl3-Al(i-C4H9)3 system is twice or three times that of the NdCl3.4DMSO system. The activity of the ternary system SAAC (styrene-acrylic acid copolymer).Nd-Ph3CCl-Al(i-C4H9)3 was up to 170 kg polybutadiene/(g Nd-h). The cis-1,4 content of polybutadiene was more than 98%. This system was also used for isoprene polymerization. The cis-1,4 content of the polyisoprene obtained was about 96%