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Olefin polymerization catalyst and preparation method thereof, olefin polymerization catalyst system and application thereof, and preparation method of polyolefin resin

An olefin polymerization and catalyst technology, which is used in the preparation of polyolefin resins and the field of modified olefin polymerization catalysts to achieve the effect of high melt strength and mechanical strength

Active Publication Date: 2019-07-05
INST OF CHEM CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current TPV products are mainly realized through the post-polymerization modification process (dynamic vulcanization and cross-linking), and the method for preparing TPV by polymerization in a kettle has not been reported.

Method used

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  • Olefin polymerization catalyst and preparation method thereof, olefin polymerization catalyst system and application thereof, and preparation method of polyolefin resin
  • Olefin polymerization catalyst and preparation method thereof, olefin polymerization catalyst system and application thereof, and preparation method of polyolefin resin

Examples

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preparation example Construction

[0039] The preparation method of the modified olefin polymerization catalyst provided by the present invention comprises mixing the olefin polymerization catalyst and organosilane evenly, and the general formula of the organosilane is R 1 m SiX n (OR 2 ) k , where R 1 for C 2 -C 20 Hydrocarbyl and R 1 The end contains α-olefin double bond, norbornene group, cycloalkene group or dicyclopentadiene group, X is halogen, R 2 for C 1 -C 20 straight chain, branched or isomerized alkyl, m is an integer of 1-3, n is an integer of 1-3, k is an integer of 0-2, and m+n+k=4.

[0040] The present invention does not specifically limit the amount of the olefin polymerization catalyst and organosilane, but in order to enable the above two components to play a better synergistic effect, preferably, relative to 100 parts by weight of the olefin polymerization catalyst, the The amount of organosilane used is 10-10000 parts by weight, more preferably 20-2000 parts by weight, especially p...

Embodiment 1

[0056] This example is used to illustrate the preparation method of the modified olefin polymerization catalyst and polyolefin resin provided by the present invention.

[0057] (1) Preparation of modified olefin polymerization catalyst:

[0058] 5.0g of anhydrous magnesium chloride MgCl 2 Disperse with 13.5ml of isooctyl alcohol in 50ml of decane, heat to 130°C to form a transparent solution, and then react at 110°C for 4.0 hours to obtain a magnesium chloride alcoholate solution.

[0059] The above-mentioned magnesium chloride alcoholate solution was added dropwise to 100 ml of titanium tetrachloride at -20°C, which took 1 hour, and after the addition was completed, it was reacted at a constant temperature of -20°C for 1.0 hour. Then slowly raise the temperature to 60°C, add 2.0 g of fluorene diether, and then react at a constant temperature of 110°C for 2.0 hours. After the reaction is completed, the liquid is filtered off, and 100ml of titanium tetrachloride is added again...

Embodiment 2

[0063] This example is used to illustrate the preparation method of the modified olefin polymerization catalyst and polyolefin resin provided by the present invention.

[0064] (1) Preparation of modified olefin polymerization catalyst:

[0065] 5.0g of anhydrous magnesium chloride MgCl 2 Disperse with 13.5ml of isooctyl alcohol in 50ml of decane, heat to 130°C to form a transparent solution, and then react at 110°C for 4.0 hours to obtain a magnesium chloride alcoholate solution.

[0066] 3.0 g of natural halloysite was added to the magnesium chloride alcoholate solution, and reacted at 110° C. for 4.0 hours to obtain a halloysite-containing solution.

[0067] The above-mentioned halloysite-containing solution was added dropwise to 100 ml of titanium tetrachloride at -20°C, which took 1 hour. After the addition was completed, the solution was reacted at a constant temperature of -20°C for 1.0 hour. Then slowly raise the temperature to 60°C, add 2.0 g of fluorene diether, an...

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Abstract

The present invention provides a modified olefin polymerization catalyst and a preparation method thereof, a modified olefin polymerization catalyst system and applications thereof, and a polyolefin resin preparation method. The modified olefin polymerization catalyst contains an olefin polymerization catalyst and organosilane, wherein the general formula of the organosilane is R<1>mSiXn(OR<2>)k, R<1> is C2-C20 hydrocarbyl and the terminal of R<1> contains an alpha-olefin double bond, a norbornene group, a cycloolefin group or a dicyclopentadiene group, X is a halogen, R<2> is C1-C20 linear, branched or isomerized alkyl, m is an integer of 1-3, n is an integer of 1-3, k is an integer of 0-2, and the sum of m, n and k is 4. According to the present invention, with the modified olefin polymerization catalyst, the homopolymerized polyolefin resin having high melt strength and high mechanical strength, the polyolefin elastomer having high rubber phase content, the polyolefin elastomer having the rubber phase having a cross-linked structure, and other series of high-performance polyolefin resins can be obtained through inside-kettle polymerization.

Description

technical field [0001] The invention relates to the field of olefin polymerization catalysts, in particular to a modified olefin polymerization catalyst, a preparation method of a modified olefin polymerization catalyst, a modified olefin polymerization catalyst system, and the modified olefin polymerization catalyst system used in olefin polymerization reactions Application in and a kind of preparation method of polyolefin resin. Background technique [0002] In recent years, although olefin polymerization modifiers with new structures and new properties have been discovered and applied in the research of high-performance polyolefin resins, some high-performance polyolefin resins with broad application prospects still lack effective catalytic polymerization. means. For example, cross-linked polypropylene with high melt strength has broad application prospects in blow molding, foaming and other applications, but there is currently no effective polymerization method to prepa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F4/646
Inventor 董金勇秦亚伟
Owner INST OF CHEM CHINESE ACAD OF SCI
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