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A kind of catalyst component for olefin polymerization and its preparation method and catalyst

A technology for olefin polymerization and catalysts, applied in the field of catalyst components for olefin polymerization and its preparation and catalysts, can solve the problems of complex synthesis and purification process of diol ester compounds, high catalyst production costs, low catalyst activity, etc., and achieve The effects of slow activity decay, low production cost, and easy availability of raw materials

Active Publication Date: 2017-05-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the catalyst system is used for propylene polymerization, the obtained polymer has high isotacticity and high apparent density, but the catalyst activity is not high
[0004] Chinese patent CN1453298A discloses a class of glycol ester compounds containing special structures as electron donors. The use of such electron donors can not only improve the activity of the catalyst, but also significantly broaden the molecular weight distribution of the obtained propylene polymer. The synthesis and purification process of alcohol ester compound is complicated, which makes the catalyst production cost higher

Method used

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  • A kind of catalyst component for olefin polymerization and its preparation method and catalyst

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Experimental program
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Effect test

Embodiment 1

[0030] 1. Preparation of titanium-containing solid catalyst components

[0031] In the reaction kettle repeatedly replaced by high-purity nitrogen, 4.8 grams of anhydrous magnesium chloride, 70 milliliters of toluene, 4.0 milliliters of epichlorohydrin, 12.5 milliliters of tributyl phosphate and 1.0 milliliters of tetraethoxysilane were added successively, at a temperature of 60 Under the condition of ℃, react for 1 hour, add 1.5 grams of phenol and 30 milliliters of toluene, continue to react for one hour, cool down to -28 ℃, add dropwise 56 milliliters of titanium tetrachloride, and gradually raise the temperature to 85 ℃, add 1.1 Milliliter of di-n-butyl phthalate (DNBP), keep the temperature for one hour, filter the mother liquor, wash twice with toluene, then add 48 ml of titanium tetrachloride, 72 ml of toluene, keep the temperature at 110°C for 0.5 hours, filter and then The treatment was repeated twice, and then washed with hexane for 5 times, and the remaining solid p...

Embodiment 2

[0037] 1. Preparation of titanium-containing solid catalyst components

[0038] In the reaction kettle repeatedly replaced by high-purity nitrogen, 4.8 grams of anhydrous magnesium chloride, 70 milliliters of toluene, 4.0 milliliters of epichlorohydrin, 12.5 milliliters of tributyl phosphate and 2.0 milliliters of tetraethoxysilane were added successively, at a temperature of 60 Under the condition of ℃, react for 1 hour, add 1.5 grams of resorcinol and 35 milliliters of toluene, continue to react for one hour, cool down to -28 ℃, add dropwise 56 milliliters of titanium tetrachloride, and gradually heat up to 85 ℃, at 80 ℃ Add 1.1 ml of di-n-butyl phthalate (DNBP), keep the temperature for one hour, filter off the mother liquor, wash twice with toluene, then add 48 ml of titanium tetrachloride and 72 ml of toluene, keep the temperature at 110°C for 0.5 hour, After filtration, the treatment was repeated twice, and then washed 5 times with hexane, and the remaining solid product...

Embodiment 3

[0044] 1. Preparation of titanium-containing solid catalyst components

[0045] With embodiment 1, just phenol changes naphthol into. The content of titanium in the catalyst is 5.2wt%, the content of DNBP is 12.4wt%, the content of magnesium is 18.0wt%, the content of phosphorus is 0.1wt%, and the content of silicon is 0.1wt%.

[0046] 2. Polymerization with a reaction time of 1 hour

[0047] With embodiment 1.

[0048] 3. Polymerization with a reaction time of 2 hours

[0049] With embodiment 1.

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Abstract

The invention discloses a catalyst component for olefin polymerization and a preparation method and application thereof. The catalyst component is prepared by the following steps: (1) contacting a magnesium compound, an organic epoxy compound, an organic phosphorus compound and a silane compound in a solvent to obtain a uniform solution; (2) in the presence of a phenolic compound, contacting the obtained uniform solution with a titanium compound; (3) contacting the mixture obtained in the step (2) with an electron donor compound and filtering, washing and drying to obtain the titanium-containing catalyst component for olefin polymerization. The catalyst disclosed by the invention used for propylene polymerization and copolymerization has high catalyst activity and is slow in active attenuation.

Description

technical field [0001] The invention relates to a catalyst component for olefin polymerization or copolymerization, its preparation method, and its application in olefin polymerization or copolymerization. Background technique [0002] In the late 1970s, companies such as Mitsui Petrochemical Corporation of Japan and Monai of the United States successfully developed titanium-magnesium high-efficiency carrier catalysts with magnesium chloride as the carrier. Because the carrier was used to improve the utilization rate of the active center of the titanium atom, the catalytic activity was improved. It is much higher than conventional catalysts and simplifies the polymerization process, so the world's polyolefin industry has developed rapidly. Conventional methods for preparing highly active supported catalysts are generally co-grinding, grinding and impregnating, spraying carrier forming and high-speed stirring carrier forming, etc. The main disadvantage of the catalyst obtain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F4/649C08F4/646C08F4/58C08F4/52C08F110/06C08F210/16
Inventor 郭正阳王宇任春红王迎刘萃莲雷世龙洪挺付梅艳
Owner CHINA PETROLEUM & CHEM CORP