A supported titanium-containing catalyst component which is useful for the polymerization of olefins, is obtained by contacting magnesium metal, a halogenated hydrocarbon of the general formula: RX (where R is an alkyl, aryl, or cycloalkyl group and X is a halogen atom) and an alkoxy compound of the general formula: R'mC(OR')4-m (where X' is a hydrogen atom, a halogen atom or an alkyl, aryl, or cycloalkyl group having 1 - 10 carbon atoms, R' is an alkyl, aryl, or cycloalkyl group having 1 - 20 carbon atoms, and m is 0, 1 or 2) to obtain a magnesium-containing solid and contacting said solid with a carboxylic acid or derivative thereof and thereafter with hydrogen chloride and finally with a titanium compound such as titanium tetrachloride. The catalyst component employed in combination with aluminium co-catalyst is useful for the polymerization of alpha-olefins.
将
金属
镁、通式为 RX(其中 R 为烷基、芳基或环烷基,X 为卤素原子)的卤代烃和通式为 RX(其中 R 为烷基、芳基或环烷基,X 为卤素原子)的烷氧基化合物接触,可获得一种用于烯烃聚合的支撑型含
钛催化剂组分:RX(其中 R 是烷基、芳基或环烷基,X 是卤素原子)和通式如下的烷氧基化合物:R'mC(OR')4-m(其中 X'为氢原子、卤素原子或具有 1-10 个碳原子的烷基、芳基或环烷基,R'为具有 1-20 个碳原子的烷基、芳基或环烷基,m 为 0、1 或 2)以获得含
镁固体,并将所述固体与
羧酸或其衍
生物接触,然后与
氯化氢接触,最后与
钛化合物如
四氯化钛接触。与铝助催化剂结合使用的催化剂组分可用于α-烯烃的聚合。