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A preparation method of organic tungsten catalyst for polydicyclopentadiene composite material injection molding

A technology of polydicyclopentadiene and composite materials, applied in the fields of organic chemistry, chemical instruments and methods, metallocene, etc., can solve the problem of unsatisfactory catalytic effect, general stability, impurity tolerance, poor miscibility and dispersibility and other problems to achieve the effect of improving miscibility and dispersion uniformity, reducing layered accumulation, reducing specific gravity and polarity

Active Publication Date: 2021-11-02
大成普瑞新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention also has problems such as unsatisfactory catalytic effect, general stability and impurity tolerance, and poor miscibility and dispersibility with cycloolefins.

Method used

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  • A preparation method of organic tungsten catalyst for polydicyclopentadiene composite material injection molding
  • A preparation method of organic tungsten catalyst for polydicyclopentadiene composite material injection molding
  • A preparation method of organic tungsten catalyst for polydicyclopentadiene composite material injection molding

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Experimental program
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Effect test

Embodiment 1

[0043] The organic tungsten catalyst for injection molding of polydicyclopentadiene composites was prepared according to the following steps:

[0044]S1. In the reactor with heating device and stirring device, the volume is 3000L, feed nitrogen to replace the air 3 times, then add 200kg BHT polymerization inhibitor into the reactor;

[0045] S2. Pump 2400L dicyclopentadiene into the reactor, stir until evenly mixed, and then feed nitrogen into the reactor to replace the air for 3 times;

[0046] S3. Under the condition of isolated air, add 6kg of platinum carbon into the reaction kettle, stir until the dispersion is uniform;

[0047] S4. Turn on the heating device of the reactor, and heat the temperature of the reactor to 140° C.;

[0048] S5. Introduce nitrogen into the evaporating tank with a heating device and a volume of 300L to replace the air for 3 times, then add 300kg of tungsten hexachloride into the evaporating tank, turn on the heating device of the evaporating tan...

Embodiment 2

[0052] The organic tungsten catalyst for injection molding of polydicyclopentadiene composites was prepared according to the following steps:

[0053] S1. In the reactor with heating device and stirring device, the volume is 3000L, feed nitrogen to replace the air 3 times, then add 200kg BHT polymerization inhibitor into the reactor;

[0054] S2. Pump 2400L dicyclopentadiene into the reactor, stir until evenly mixed, and then feed nitrogen into the reactor to replace the air for 3 times;

[0055] S3. under the condition of isolated air, add 2kg of palladium charcoal into the reaction kettle, stir until uniformly dispersed;

[0056] S4. Turn on the heating device of the reactor, and heat the temperature of the reactor to 110° C.;

[0057] S5. Introduce nitrogen into the evaporating tank with a heating device and a volume of 300L to replace the air for 3 times, then add 300kg of tungsten hexachloride into the evaporating tank, turn on the heating device of the evaporating tank,...

Embodiment 3

[0061] The organic tungsten catalyst for injection molding of polydicyclopentadiene composites was prepared according to the following steps:

[0062] S1. In the reactor with heating device and stirring device, the volume is 3000L, feed nitrogen to replace the air 3 times, then add 200kg BHT polymerization inhibitor into the reactor;

[0063] S2. Pump 2400L dicyclopentadiene into the reactor, stir until evenly mixed, and then feed nitrogen into the reactor to replace the air for 3 times;

[0064] S3. Under the condition of isolated air, add 10kg of platinum carbon into the reaction kettle, stir until it is evenly dispersed;

[0065] S4. Turn on the heating device of the reactor, and heat the temperature of the reactor to 170° C.;

[0066] S5. In the evaporating tank with a heating device and a volume of 300L, feed nitrogen to replace the air 3 times, then add a mixture of 300kg tungsten hexachloride and tungsten oxytetrachloride into the evaporating tank, turn on the heating ...

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Abstract

The invention provides a preparation method of an organic tungsten catalyst used for injection molding of polydicyclopentadiene composite materials, comprising the following steps: S1. feeding nitrogen into the reaction kettle, and then adding a BHT polymerization inhibitor; S2. Pump pentadiene into the reaction kettle, mix well and then pass nitrogen gas; S3 add the catalyst into the reaction kettle and disperse evenly; S4. Heat the reaction kettle; S5. , heating to melt the tungsten-containing compound; S6. Heating the nitrogen gas and controlling its pressure to obtain high-temperature nitrogen gas, so that the tungsten-containing compound becomes a tungsten-containing compound vapor, and feeding the high-temperature nitrogen gas and the tungsten-containing compound vapor into the reaction kettle together, and stirring; S7. Stop the stirring device, cool to below 100°C, blow in nitrogen gas, let stand to cool to room temperature, and discharge. The organic tungsten catalyst prepared by the invention has high catalytic activity, good stability, impurity tolerance and miscibility and dispersibility with cycloolefin substances.

Description

technical field [0001] The invention relates to an organic tungsten catalyst, in particular to a preparation method and application of an organic tungsten catalyst used for injection molding of polydicyclopentadiene composite materials. Background technique [0002] Polydicyclopentadiene (PDCPD) composite is a new type of engineering material with excellent physical properties and balanced physical properties. Polydicyclopentadiene is mainly a cycloolefin material based on dicyclopentadiene (DCPD), which is molded by reaction injection molding (RIM) using the Ziegler-Natta coordination polymerization mechanism and catalytic system. Because dicyclopentadiene is a by-product with a large output in petrochemical ethylene engineering, the research on the polymerization of dicyclopentadiene has been widely concerned at home and abroad. So far, only two companies in the world, including Japan and the United States, have realized the industrial production of polydicyclopentadiene ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F17/00C08G61/08
CPCC07F17/00C08G61/08C08G2261/418
Inventor 李明和李尧
Owner 大成普瑞新材料有限责任公司
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