ALKOXY MAGNESIUM SUPPORTED OLEFIN POLYMERIZATION CATALYST COMPONENT, CATALYST AND APPLICATION THEREOF

• Main Authors: JIAO, Wenjie, CHEN, Hao, WANG, Zhiwu, GAO, Yong, LI, Huashu, MA, Qingli, WANG, Xinghuo, ZHANG, Junwei, HU, Le, DAI, Jinsong, LI, Shuhang
• Format: Patent
• Language: Chinese; English; French
• Published: 28.06.2018
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

Provided is an alkoxy magnesium supported olefin polymerization catalyst component, comprising the reaction products of the following components: at least one alkoxy magnesium compound of Mg(OR1')N(OR2')2-N, at least one titanium compound of general formula Ti(OR)nX4-n, at least one ortho-phenylene diester electron donor compound a, and at least one diether electron donor compound b, wherein the molar ratio of a to b is 0.05 to 20. The catalyst component has an ultrahigh polymerization activity when used for olefin polymerization, and does not require the use of an external electron donor, but can also obtain a polymer with a high isotacticity, and the resulting polymer has a relatively wide molecular weight distribution and a relatively low ash content. L'invention concerne un constituant catalytique de polymérisation oléfinique supporté sur de l'alcoxymagnésium, comprenant les produits de réaction des constituants suivants : au moins un composé de type alcoxymagnésium Mg(OR1')N(OR2')2-N, au moins un composé