公开(公告)号：US20160009830A1

公开(公告)日：2016-01-14

申请号：US14772962

申请日：2013-07-11

Applicant: PETROCHINA COMPANY LIMITED

Inventor： Jianjun YI ,  Jianchun LU ,  Qigu HUANG ,  Zhi LIU ,  Xuteng HU ,  Hongji LIU ,  Mingge ZHANG ,  Hongming LI ,  Kejing GAO ,  Baichun ZHU

IPC: C08F4/16 ,  C08F4/52 ,  C08F4/02

CPC classification number: C08F4/16 ,  C08F4/022 ,  C08F4/52 ,  C08F110/02 ,  C08F210/16 ,  C08F4/651 ,  C08F210/14 ,  C08F2500/18 ,  C08F4/6565

Abstract: The present invention relates to a supported polyolefin catalyst and its preparation and application. Its main catalyst is composed of a support and a transition metal halide; the support is composed of a magnesium halide compound, a silicon halide compound, an alcohol compound having 5 carbon atoms or less, an alcohol compound having carbon atom number of 6-20 in a molar ratio of 1:(0.1 to 20):(0.1 to 5):(0.01 to 10); the molar ratio of the magnesium halide compound and the transition metal halide is 1:(0.1 to 30); during the preparation process of the main catalyst, an organic alcohol ether compound is added, the mass ratio of the magnesium halide compound and the organic alcohol ether compound is 100:(0.1 to 20); and the molar ratio of the transition metal halide in the main catalyst and the co-catalyst is 1:(30 to 500). The catalyst particles of the present invention have a good shape and a uniform particle size distribution, with polymer obtained under catalysis using it having a low content of fine powders and a high bulk density, thus suitable for olefin slurry polymerization process, a gas phase polymerization process or a combined polymerization process.

Abstract translation: 本发明涉及负载型聚烯烃催化剂及其制备和应用。 其主要催化剂由载体和过渡金属卤化物组成; 载体由卤化镁化合物，卤化硅化合物，具有5个碳原子或更少的醇化合物，摩尔比为1：（0.1-20）的碳原子数为6-20的醇化合物构成:( 0.1〜5）:( 0.01〜10） 卤化镁化合物和过渡金属卤化物的摩尔比为1：（0.1〜30）; 在主催化剂的制备过程中，加入有机醇醚化合物，卤化镁化合物和有机醇醚化合物的质量比为100：（0.1-20）; 主催化剂中过渡金属卤化物与助催化剂的摩尔比为1：（30〜500）。 本发明的催化剂颗粒具有良好的形状和均匀的粒度分布，其中使用具有低含量的细粉末和高堆积密度的催化剂获得的聚合物，因此适用于烯烃淤浆聚合方法，气相聚合 方法或组合聚合方法。