申请人:MONTELL NORTH AMERICA INC.
公开号:EP0361494A2
公开(公告)日:1990-04-04
Diethers of general formula:
where R, RI, RII, RIII, RIV and RV, same or different, are H or linear or branched alkyl, cycloalkyl, aryl, alkylaryl or arylalkyl radicals with 1-18 carbon atoms, provided that R and RI are not both H or CH3 or are not CH3 and n-propyl; RVI and RVII the same or different, are linear or branched alkyl, cycloaliphatic, aryl, or arylalkyl radicals having 1-18 carbon atoms; one or more of R to RVII may be bonded to form a cyclic structure.
The diethers are particularly useful in the preparation of Ziegler-Natta catalysts.
Solid catalyst components for the polymerization of olefins modified with electron-donor compounds, comprising a titanium halide supported on a magnesium dihalide in active form and containing as an electron-donor compound a di- or polyether having specific reactivity characteristics towards MgCl2 and TiCl4.
通式如下的二乙基化合物
其中 R、RI、RII、RIII、RIV 和 RV 相同或不同,均为 H 或具有 1-18 个碳原子的直链或支链烷基、环烷基、芳基、烷芳基或芳烷基自由基,但 R 和 RI 不能同时为 H 或 CH3 或不能同时为 CH3 和正丙基;RVI 和 RVII 相同或不同,均为具有 1-18 个碳原子的直链或支链烷基、环烷基、芳基或芳烷基自由基;R 至 RVII 中的一个或多个可以键合形成环状结构。
二乙醚在制备齐格勒-纳塔催化剂中特别有用。 用电子供体化合物改性的烯烃聚合用固体催化剂组分,包括以活性形式支撑在二卤化镁上的卤化钛,并含有作为电子供体化合物的对氯化镁和氯化钛具有特定反应特性的二元或多元醚。