Olefin polymerization catalyst, and preparation method and application thereof

A technology of olefin polymerization and catalyst, which is applied in the field of catalyst and catalyst preparation, and can solve the problems of low catalyst activity and easy adhesion on the container wall

Active Publication Date: 2015-08-12
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalyst activity is low, and the main catalyst particles are easy to adhere to the container wall

Method used

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  • Olefin polymerization catalyst, and preparation method and application thereof
  • Olefin polymerization catalyst, and preparation method and application thereof
  • Olefin polymerization catalyst, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Add 1g of magnesium dichloride, 20ml of n-decane, 0.2ml of ethanol, and 6.5ml of isooctyl alcohol into the reactor fully replaced by nitrogen, stir and heat up to 120°C, react for 2h, and the solid is completely dissolved to form a uniform solution. Cool down to 50°C, add 2.1ml of alkoxyorganophosphate ether compound (1) conforming to the general formula (5) and 0.15ml of tetraethoxysilane in sequence, and keep the temperature at 50°C for 2h. Lower the system to -15°C, add 30ml of titanium tetrachloride dropwise, react for 1h, then raise the temperature to 110°C for another 2h. Stop stirring, stand still, separate layers, filter, wash with hexane four times (30 ml each time), and vacuum dry at 70°C for 2 hours to obtain a spherical powder with good fluidity, non-stick container wall, uniform particle size distribution solid catalyst.

Embodiment 2

[0042] Add 1g of magnesium dichloride, 30ml of n-decane, 0.25ml of ethanol, and 7ml of isooctyl alcohol into the reactor fully replaced by nitrogen, stir and heat up to 120°C, react for 2h, and the solid dissolves completely to form a uniform solution. Cool down to 60°C, add 1.1ml of alkoxyorganophosphate ether compound (2) conforming to the general formula (5) and 0.5ml of tetraethoxysilane in sequence, and keep the temperature at 60°C for 2 hours. Lower the system to -10°C, add 40ml of titanium tetrachloride dropwise, react for 1 hour, then raise the temperature to 100°C for another 3 hours. Stop stirring, stand still, separate layers, filter, wash with hexane four times (30 ml each time), and dry in vacuum at 60°C for 3 hours to obtain a spherical powder with good fluidity, uniform particle size distribution, non-stick container wall solid catalyst.

Embodiment 3

[0044]Add 1g of magnesium dichloride, 20ml of n-decane, 0.2ml of ethanol, and 8ml of isooctyl alcohol into the reactor fully replaced by nitrogen, stir and heat up to 100°C, react for 2h, and the solid is completely dissolved to form a uniform solution. Cool down to 50°C, add 13ml of alkoxyorganophosphate ether compound (3) conforming to the general formula (5) and 2ml of tetraethoxysilane in sequence, and raise the temperature to 80°C for 2 hours. Lower the system to -15°C, add dropwise 35ml of titanium tetrachloride, react for 1 hour, raise the temperature to 65°C and react for another 2 hours. Stop stirring, stand still, separate layers, filter, wash with hexane four times (30 ml each time), and dry in vacuum at 50°C for 4 hours to obtain a spherical powder with good fluidity, uniform particle size distribution, non-stick container wall solid catalyst.

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Abstract

The invention provides an olefin polymerization catalyst. The catalyst is composed of a main catalyst and a cocatalyst, and the main catalyst is composed of a magnesium halide carrier, transition metal halide, C2-15 alcohol, an organo silicon compound and an alkyloxy organic phosphoric acid ether compound according to a molar ratio of 1:(1-40):(0.01-5):(0.01-10):(0.01-10); and the cocatalyst is an organic aluminum compound. The catalyst has the advantages of good particle form, high catalysis activity and good hydrogen regulation performance. The invention also provides a preparation method and an application of the olefin polymerization catalyst.

Description

technical field [0001] The invention belongs to the fields of high-efficiency olefin polymerization catalysts and olefin polymerization, and in particular relates to a catalyst for homopolymerization or copolymerization of olefins, a preparation method and application of the catalyst. Background technique [0002] Olefin polymerization catalysts are the core of polyolefin polymerization technology. From the perspective of the development of olefin polymerization catalysts, there are two main aspects: (1) the development of polyolefin resin catalysts that can prepare special or better performance, such as metallocene catalysts (2) For the production of general-purpose polyolefin resins, on the basis of further improving catalyst performance, simplify the catalyst preparation process, reduce catalyst costs, and develop environmentally friendly technologies to improve efficiency ,Increase competitiveness. Before the 1980s, the focus of polyethylene catalyst research was on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F110/02C08F210/16C08F110/06C08F4/649C08F4/658C08F4/651
Inventor 黄启谷李红明王静余朦山张润聪周露陈洋杨万泰
Owner BEIJING UNIV OF CHEM TECH
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