公开(公告)号：US06559250B2

公开(公告)日：2003-05-06

申请号：US09871253

申请日：2001-05-30

申请人： Ki-Su Ro ,  Il-Seop Kim ,  Chun-Byung Yang ,  Moon-Young Shin

发明人： Ki-Su Ro ,  Il-Seop Kim ,  Chun-Byung Yang ,  Moon-Young Shin

IPC分类号： C08F444

CPC分类号： C08F10/00 ,  C08F110/06 ,  C08F4/6465 ,  C08F4/651 ,  C08F4/6567 ,  C08F2500/15 ,  C08F2500/12

摘要： The present invention relates to a method of homo- or co-polymerization of &agr;-olefin by means of using a catalyst system which comprises the following components: (1) a solid complex titanium catalyst produced by means of a production method comprising the following steps: (a) preparing a magnesium compound solution by dissolving a magnesium halide compound and a compound of Group IIIA of the Periodical Table in a solvent of mixture of cyclic ester, one or more types of alcohol, a phosphorus compound, and an organic silane; (b) precipitating the solid particles by reacting said magnesium compound solution with a transitional metal compound, a silicon compound, a tin compound, or the mixture thereof; and (c) reacting said precipitated solid particles with a titanium compound and electron donors; (2) an organometallic compound of metal of Group IIIA of the Periodical Table; and (3) external electron donors comprising three or more types of organo-silicon compounds, wherein the melt flow rates of the homopolymers obtained from polymerization by individually using said organo-silicon compounds under the same polymerization conditions are 5 or less, 5˜20, and 20 or higher, respectively. According to the present invention, it has an advantage of obtaining polymers of broad molecular weight distribution with high hydrogen reactivity and melt flow rates while maintaining high stereoregularity and yields for olefin homo- or co-polymers during homo- or co-polymerization of &agr;-olefin having three or more carbon atoms.

摘要翻译： 本发明涉及通过使用包含以下组分的催化剂体系来均相或共聚α-烯烃的方法：（1）通过包括以下步骤的制备方法生产的固体复合钛催化剂 （a）通过将卤化镁化合物和周期表IIIA族化合物溶解在环酯，一种或多种醇，磷化合物和有机硅烷的混合物的溶剂中来制备镁化合物溶液; （b）使所述镁化合物溶液与过渡金属化合物，硅化合物，锡化合物或其混合物反应沉淀固体颗粒; 和（c）使所述沉淀固体颗粒与钛化合物和电子给体反应; （2）周期表IIIA族金属的有机金属化合物; 和（3）包含三种或更多种有机硅化合物的外部电子给体，其中在相同聚合条件下通过单独使用所述有机硅化合物的聚合获得的均聚物的熔体流动速率为5或更小，5〜20 ，和20以上。 根据本发明，其具有获得具有高氢反应性和熔体流动速率的高分子量分布的聚合物，同时保持高的立构规整性和在α-烯烃的均聚或共聚期间烯烃均聚物或共聚物的产率， 具有三个或更多个碳原子的烯烃。