COPOLYMERIZATION OF ETHYLENE AND STYRENE WITH SUPPORTED TICL4 NDCL3 CATALYST/

The copolymerization of ethylene and styrene was carried out in the pr esence of TiCl4/NdCl3/MgCl2/AlEt3 catalyst. The influences of comonome r ratio, concentrations of catalyst and AlEt3, solvents, and temperatu re on the copolymerization were investigated. Copolymerization product s containing styrene of 4-85 mol % were obtained with good yield. The results of C-13-NMR, IR, X-ray diffraction, and solvent extraction sho w that the products are mainly copolymers with various comonomer seque nces and exhibit special mechanical properties. (C) 1994 John Wiley & Sons, Inc.