| 摘要 |
<p>A styrenic grafted copolymer is disclosed, in which one or more monomers with ethylenically unsaturated bonds are grafted to a syndiotactic polystyrene. The styrenic grafted copolymer is produced through the following steps: (1) preparing a syndiotactic stereogular styrenic polymer having repeating units (A) by polymerizing vinyl aromatic monomers under a catalyst system, the catalyst system consisting of transition metal compounds (I) as main catalyst components and organic aluminum compounds or aluminoxanes (II) as cocatalyst components; and (2) graft-polymerizing monomers of formula (B) having ethylenically unsaturated bonds to the syndiotactic stereoregular styrenic polymer: where R1 is hydrogen, halogen, or a substituent not containing carbon-carbon double bonds but containing one or more components selected from the group consisting of: carbon, oxygen, nitrogen, sulfur, phosphorus, selenium, silicon, and tin; and m is an integer from 1 to 3 (if m is 2 or 3, R1 is same or different); where each of R2-R5 is hydrogen, halogen, or a substituent containing one or more components selected from the group consisting of: carbon, oxygen, nitrogen, sulfur, phosphorus, selenium, silicon, and tin.</p> |
