Catalyst for olefin polymerization reaction and preparation method and applications thereof

A technology of olefin polymerization and catalyst, which is applied in the field of olefin polymerization catalyst and its preparation and application. It can solve the problems of complex synthesis and purification process, high apparent density and widening of diol ester compounds, and achieve good industrialization. Application prospect, low production cost, high catalytic activity effect

Active Publication Date: 2011-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When this catalyst system is used for propylene polymerization, the obtained polymer has high isotacticity and high apparent density, but the catalyst activity is not satisfactory enough
[0004] In order to improve the performance of the above-mentioned catalysts, a class of glycol ester compounds containing a special structure was proposed in the Chinese patent CN1453298A as the internal electron donor of the catalyst. The use of such electron donors can not only improve the activity of the catalyst, but also the obtained propylene The molecular weight distribution of the compound is obviously widened, but the synthesis and purification process of this type of diol ester compound is complicated, which significantly increases the production cost of the catalyst

Method used

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  • Catalyst for olefin polymerization reaction and preparation method and applications thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] 1. Preparation of titanium-containing solid catalyst components

[0033] In the reaction kettle repeatedly replaced by high-purity nitrogen, 4.8 grams of anhydrous magnesium chloride, 93 milliliters of toluene, 4.0 milliliters of epichlorohydrin, 12.5 milliliters of tributyl phosphate, and 10 milliliters of 2-methyl-2-phenylchloropropane were successively added. Under the conditions of stirring speed of 450rpm and temperature of 60°C, react for 2 hours, add 1.4 g of phthalic anhydride, continue the reaction for one hour, cool down to -28°C, add 56 ml of titanium tetrachloride dropwise, and gradually raise the temperature to 85°C. ℃, add 1.5 ml of di-n-butyl phthalate (DNBP) at 80 °C, keep the temperature for one hour, filter off the mother liquor, wash twice with toluene, then add 48 liters of titanium tetrachloride, 72 liters of toluene solution, in Keep the temperature at 110°C for 0.5 hours, filter and repeat the treatment twice, then wash with hexane for 5 times, an...

Embodiment 2

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

[0038] Same as in Example 1, 10 milliliters of 2-methyl-2-phenylchloropropane was changed to 13 milliliters of 3,3-dimethylchlorobutane.

[0039] 2. Polymerization reaction

[0040] Propylene polymerization condition is the same as embodiment 1, and catalyst activity is 65300 gram polypropylene / gram catalysts, and polymer bulk density is 0.40 gram / cm 3 , MI is 4.8g / 10min.

Embodiment 3

[0042] 1. Preparation of titanium-containing solid catalyst components

[0043] Same as Example 1, 10 milliliters of 2-methyl-2-phenylchloropropane was changed to 20 milliliters of 2-methylchloropropane.

[0044] 2. Polymerization reaction

[0045] Propylene polymerization condition is the same as embodiment 1, and catalyst activity is 62000 gram polypropylene / gram catalysts, and polymer bulk density is 0.42 gram / cm 3 , MI is 4.8g / 10min..

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Abstract

The invention provides a catalyst component for olefin polymerization or copolymerization and a preparation method thereof. The preparation method comprises the following steps of: dissolving magnesiumhalide in a system containing an organic epoxy compound, an organic phosphorus compound and halohydrocarbon to form a solution; and in the presence of an auxiliary precipitation agent, reacting a titanium compound with the obtained solution, and precipitating the catalyst with magnesium and titanium for sediment. The preparation method of the catalyst active component has the advantages of easy obtaining of raw materials, lower production cost and high catalytic activity during using for propene polymerization or copolymerization, and is suitable for a variety of polymerization processes, such as a serous fluid method, a bulk method, a gas phase method and the like.

Description

technical field [0001] The present 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, Japan’s Mitsui Petrochemical Company and U.S. companies such as Monai successfully developed a titanium-magnesium high-efficiency carrier catalyst with magnesium chloride as a carrier. Due to the use of magnesium chloride and other carriers to improve the utilization of the active center of the titanium atom, thus The catalytic activity is much higher than that of conventional catalysts, and the polymerization process is simplified, so the world's polyolefin industry has developed rapidly. Conventional methods for loading titanium active centers on the carrier include: co-grinding method, grinding impregnation method, spray carrier forming method and high-speed stirring carrier forming method, etc. The main disadvan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/646C08F4/654
Inventor 郭正阳王宇洪挺刘萃莲王迎任春红
Owner CHINA PETROLEUM & CHEM CORP
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