| 摘要 |
PURPOSE:To obtain a novel polymer having extremely narrow molecular weight distribution, containing phenyl groups at approximately all chain ends, by polymerizing propylene in the presence of a specific polymerization catalyst, reacting the reaction product with a styrenic compound and successively a proton donor. CONSTITUTION:Propylene is polymerized in the presence of a polymerization catalyst consisting of a catalytic component containing a vanadium compound shown by formula I (R<6>-R<8> are 1-8C hydrocarbon and an organometallic compound (e.g. dimethylaluminum chloride, etc.) or metal of group I-III of the periodic table, the prepared living propylene polymer is reacted with a styrenic compound (e.g. styrene, tetramethyl-styrene, etc.) shown by formula II (R<1>-R<5> are H or 1-8C hydrocarbon) and then with a proton donor (e.g. methanol, hydrochloric acid, etc.) to give the aimed polymer shown by formula III (n is 20-10,000). The polymer is usable as a compatible solvent for polymers, surface modifier for substances, viscosity index improver, drag reducing agent, etc.
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