Modified Ti-Mg catalyst as well as preparation method and application thereof

The invention relates to a modified Ti-Mg catalyst as well as a preparation method and application thereof. The catalyst takes porous silica gel and anhydrous magnesium chloride as carriers, titanium-containing transition metal as an active component and an electron donor compound as a modifier. The...

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Hauptverfasser:	WU LINMEI, REN HEGANG, GU ZHENSHENG, SONG LEI, ZHANG HUAIZHI, WANG TAO, WANG LUHAI, LI DONGXIA, LIU BINYUAN, ZHANG MINGHUI, QIU LIPING, JIANG JINXIAN, LIU YUZHEN, YANG MIN, ZOU ENGUANG, ZHANG XU, ZHANG RUI, WANG HUA, LIU PANGE, ZHAO CHENGCAI, FANG HONG, LIN LIQIU, WEI DESHUAI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention relates to a modified Ti-Mg catalyst as well as a preparation method and application thereof. The catalyst takes porous silica gel and anhydrous magnesium chloride as carriers, titanium-containing transition metal as an active component and an electron donor compound as a modifier. The modified Ti-Mg catalyst contains, based on the weight percentage, 1.2% to 7.9% of Ti, 4.0% to 12.6% of Mg:, 0.2% to 8.6% of the electron donor compound: and the balance of the carriers. A polyethylene product produced by using the catalyst has the characteristics that the molecular weight distribution range is increased to the range from 5.2 to 13.2 and the molecular weight distribution range is controllable, so that the processing property of resin is greatly improved and the application range of the product is broadened.