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Metallocene compound for preparing olefin polymers and its use

A technology of metallocene compounds and olefin polymers, applied in the field of metallocene compounds, can solve the problems of increasing the conversion rate of cyclic olefins and ethylene, reducing the Tg of copolymers, etc.

Inactive Publication Date: 2004-10-20
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this increases the conversion of both cyclic olefins and ethylene
Thus, the Tg of the copolymer will decrease

Method used

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  • Metallocene compound for preparing olefin polymers and its use
  • Metallocene compound for preparing olefin polymers and its use
  • Metallocene compound for preparing olefin polymers and its use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] [Example 1] 1-cyclopentadienyl-1-indenyl cyclobutane

[0048] Synthesis of (1-Cyclopentadienyl-1-indenylcyclobutane) (a bridged cyclopentadiene)

[0049] Put 5.8g (50mmole) of indene into a 250ml round-bottomed flask, add 50ml of tetrahydrofuran, and slowly add 40ml (1.6M, 64mmole) of n-butyllithium under ice-bath conditions, during which the solution turns orange, and then remove the ice bath , continue to stir for 3 hours, drain all solvents, and wash out excess n-butyllithium with 50ml pentane, filter, and get the precipitate.

[0050] Add 50ml of tetrahydrofuran again to dissolve the precipitate, slowly add 5.9g (50mmole) of 6,6-trimethylenefulvene (6,6-trimethylenefulvene) under ice-bath conditions, continue to stir for 24 hours, then add 1ml of water to terminate the reaction , to drain all solvent. Then dissolve with 100ml of hexane, filter the salt, and take the filtrate. The crude product was directly separated by column chromatography using 20 g of silica g...

Embodiment 2

[0051] [Example 2] 1-methylcyclopentadienyl-1-indenylcyclobutane

[0052] Synthesis of (1-methylcyclopentadienyl-l-indenylcyclobutane).

[0053] Put 2.9g (25mmole) of indene into a 250ml round-bottomed flask, add 30ml of tetrahydrofuran, and slowly add 20ml (1.6M, 32mmole) of n-butyllithium under ice bath conditions, during which the solution turns orange, and then remove the ice bath , continue to stir for 3 hours, drain all solvents, and wash out excess n-butyllithium with 50ml pentane, filter, and get the precipitate.

[0054] Add 30ml of tetrahydrofuran again to dissolve the precipitate, and slowly add 3.3g (25mmole) of 3-methyl-6,6-trimethylenefulvene (3-methyl-6,6-trimethylenefulvene) under ice-bath conditions, and continue stirring After 24 hours, 1 ml of water was added to stop the reaction, and all solvents were drained. Then dissolve it with 50ml of hexane, filter the salt, and take the filtrate. The crude product was directly separated by column chromatography us...

Embodiment 3

[0055] [Example 3] Cyclobutylene (1-η 5 -cyclopentadienyl)(1-η 5 -indenyl)bis(dimethylamino)zirconium ([Cyclobutylidene(1-η 5 -cyclopentadienyl)(1-η 5 Synthesis of -indenyl)bis(dimethylamino)zirconium])

[0056] Get 0.94g (4mmole) of 1-cyclopentadienyl-1-indenylcyclobutane (1-Cyclopentadienyl-1-indenylcyclobutane) and 1g (3.7mmole) tetrakis (dimethylamino) zirconium (tetrakis(dimethylamino)zirconium; (Zr(NMe 2 ) 4), put into a 100ml round bottom flask, add 20ml toluene, react at room temperature for 15 hours, then drain all solvents, add 50ml pentane again and dissolve the solid, filter, get the filtrate, and get 1.45g of yellow solid product after concentration (Yield = 95%)

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Abstract

The present invention discloses a kind of metallocene compound for preparing olefin polymers, a kind of catalyst composite including the said metallocene compound and the method of utilizing the said catalyst composite in preparing olefin polymers. The catalyst composite is not only suitable for use in preparing olefin polymers with high cycloolefin converting rate and high vitrification converting temperature, but also high in polymerization activity at high temperature reaction condition.

Description

technical field [0001] The invention relates to a metallocene compound used for preparing olefin polymer, and also relates to a catalyst composition containing the metallocene compound, and a method for preparing olefin polymer by using the catalyst composition. The catalyst composition is not only particularly suitable for the preparation of olefin polymers with high cycloolefin conversion rate and high glass transition temperature, but also can maintain relatively high polymerization activity under high temperature reaction conditions. Background technique [0002] Olefin-based polymers have been widely used for a long time. One of the most common olefinic polymers is polyolefin, ie, a monomer or copolymer of olefins. These polyolefin plastics are typically used in blow molding, injection molding, extrusion coating, films, extrusions, pipe fittings, wire and cables. [0003] An example of a polyolefin is ethylene-propylene elastomer (ethylene-propylene rubber, EPR). Bec...

Claims

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Application Information

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IPC IPC(8): C08F4/58C08F10/00
Inventor 蔡敬诚吴铭源谢东颖魏玉瑗
Owner IND TECH RES INST
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