| 摘要 |
chemistry of polymers, particularly, chemical industry, more specifically manufacture of plastic materials. SUBSTANCE: described is method of preparing stereoregular polypropylene by polymerization of propylene in liquid monomer by heating in the presence of homogeneous catalyst system based on zirconocene and methyl alumoxane. Polymerization process includes prepolymerization stage at lower temperature, for which purpose methyl alumoxane solution in toluene is added into thermostated reactor filled with liquid propylene, zirconocene solution in toluene solution of methyl alumoxane is then added and stirred at 5-12 C for 5-7 min and temperature in reactor is then raised to 50-70 C, and polymerization is continued. EFFECT: simplified process. 10 cl, 2 dwg, 1 tbl
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