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Olefin coordination polymerization catalyst and preparation method thereof

A coordination polymerization and catalyst technology, which is applied in the field of olefin coordination polymerization catalyst and olefin polymerization, can solve the problems of hydrogen modulation sensitivity control catalyst particle regularity and insufficient particle size distribution, etc.

Active Publication Date: 2016-05-11
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still deficiencies in hydrogen adjustment sensitivity, control of catalyst particle regularity and particle size distribution

Method used

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  • Olefin coordination polymerization catalyst and preparation method thereof
  • Olefin coordination polymerization catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In the reactor fully replaced by nitrogen, add 1g of magnesium dichloride, add 20ml of n-decane, add 6.5ml of isooctyl alcohol, stir and heat up to 110°C, react for 2h, and the solid is completely dissolved to form a uniform solution. Cool down to 50°C, add 5ml of tetraethoxysilane, 0.02ml of monochlorohexane, and 0.7g of sorbic acid in sequence, and react for 2h. Lower the system to -15°C, add 25ml of titanium tetrachloride dropwise, react for 1h, then raise the temperature to 100°C for 2h. Stop stirring, let stand, 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 powdery solid procatalyst with good fluidity, uniform particle size distribution.

Embodiment 2

[0039] In the reactor fully replaced by nitrogen, add 1g of magnesium dichloride, add 30ml of n-decane, add 7ml of isooctyl alcohol, stir and heat up to 120°C, react for 2h, and the solid is completely dissolved to form a uniform solution. Cool down to 60°C, add 0.5ml of tetraethoxysilane, 0.2ml of 1-bromooctane, and 1g of benzoic acid in sequence, and react for 2h. Lower the system to -10°C, add 20ml of titanium tetrachloride dropwise, react for 1h, then raise the temperature to 100°C for 3h. Stop stirring, let stand, separate layers, filter, wash with hexane four times (30 ml each time), and vacuum-dry at 60° C. for 3 hours to obtain a spherical powdery solid procatalyst with good fluidity and uniform particle size distribution.

Embodiment 3

[0041] In the reactor fully replaced by nitrogen, add 1g of magnesium dichloride, add 20ml of n-decane, add 8ml of isooctyl alcohol, 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 2ml of triethoxymethoxysilane, 0.04ml of dichloroethane, and 1.1g of phthalic acid in sequence, and react for 2h. Lower the system to -15°C, add 15ml of titanium tetrachloride dropwise, react for 1 hour, then raise the temperature to 95°C for 2 hours. Stop stirring, let stand, separate layers, filter, wash with hexane four times (30 ml each time), and vacuum dry at 50°C for 4 hours to obtain a spherical powdery solid procatalyst with good fluidity and uniform particle size distribution.

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Abstract

The invention relates to an olefin coordination polymerization catalyst component and a catalyst, belonging to the fields of olefin polymerization catalysts and olefin polymerization. The olefin polymerization catalyst is composed of a main catalyst and a cocatalyst. The catalyst is characterized in that the main catalyst is composed of the following components in parts by mole: 1 part of magnesium halide carrier, 5-40 parts of transition metal halide, 0.05-10 parts of C1-C20 organic alcohol, 0.001-3 parts of C1-C30 organic halide, 0.001-3 parts of C2-C30 organic acid and 0.01-10 parts of organic silicon compound; and the cocatalyst is an organic aluminum compound. The catalyst has the advantages of favorable particle shape (spherical), high bulk density and favorable flowability; and the catalyst has high activity, favorable hydrogen regulation property, favorable polyolefin particle shape (spherical) and high bulk density, and is suitable for slurry-process polymerization techniques, gas-phase polymerization techniques or combined polymerization techniques.

Description

technical field [0001] The invention belongs to the field of olefin coordination polymerization catalysts and olefin polymerization, and in particular relates to a catalyst for homopolymerization or copolymerization of olefins and a preparation method of the catalyst. Background technique [0002] Olefin coordination polymerization catalysts are the core of polyolefin polymerization technology. From the perspective of the development of olefin coordination 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 and non-metallocene post-transition metal catalysts, etc.; (2) For the production of general-purpose polyolefin resins, on the basis of further improving catalyst performance, simplify catalyst preparation processes, reduce catalyst costs, and develop environmentally friendly technologies , to improve efficiency and enhance competitiveness. Be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/02C08F10/06C08F4/649C08F4/658
Inventor 黄启谷余朦山王静周阳李凤娇郭江平
Owner BEIJING UNIV OF CHEM TECH
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