Catalyst solid ingredient, catalyst containing catalyst solid ingredient and use of catalyst in olefin polymerization

A technology for polymerizing solid components and olefins, applied in the field of catalyst solid components, and can solve the problems of not finding the special advantages of DEP, not finding the application and method of DEP, etc.

Inactive Publication Date: 2014-05-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the compound used as an internal electron donor in this publication is not preferably diethyl phthalate (DEP), and no special advantages have been found in the preparation of higher isotactic polymers when DEP is used as an internal electron donor. , and the application and method of olefin catalyst components obtained when DEP is used as an internal electron donor in the high-temperature polymerization of olefins have not been found

Method used

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  • Catalyst solid ingredient, catalyst containing catalyst solid ingredient and use of catalyst in olefin polymerization
  • Catalyst solid ingredient, catalyst containing catalyst solid ingredient and use of catalyst in olefin polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] Alkoxy magnesium compound (carrier) Mg(OEt) 2-m (OEHA) m Preparation of:

[0098] After the 16L pressure-resistant reactor with a stirrer was fully replaced with nitrogen, 10L of ethanol, 300mL of 2-ethylhexanol, 11.2g of iodine, 8g of magnesium chloride and 640g of magnesium powder were added to the reactor. While stirring, the temperature of the system was raised to 75° C. for reflux reaction until no more hydrogen gas was discharged. Stop the reaction, wash with 3L ethanol, filter and dry. The obtained alkoxymagnesium support. The D50 of the obtained alkoxymagnesium carrier was 30.2 μm, the span value was 0.81, and the m value was 0.015.

[0099] The preparation of catalyst solid component A1:

[0100] Take 650g of the above alkoxymagnesium compound, 3250mL of toluene and 65mL of diethyl phthalate (DEP) to prepare a suspension. In a 16L pressure-resistant reactor that has been repeatedly replaced by high-purity nitrogen, add 2600 mL of toluene and 3900 mL of ti...

Embodiment 2

[0112] Polymerization reaction of olefins at high temperature (95°C):

[0113]The 3.5 liter autoclave connected to the catalyst feeder, propylene and hydrogen feed lines was fully replaced with gaseous propylene. Add 5 mL of a hexane solution of triethylaluminum (the concentration of triethylaluminum is 0.5 mol / L) and 1 mL of a hexane solution of dicyclopentyldimethoxysilane (DCPMS) into the catalyst feeder at room temperature ( The concentration of DCPMS is 0.1 mol / L), 10 mL of anhydrous hexane and 10-14 mg of the catalyst solid component A1 prepared in Example 1, mixed for 2 minutes (pre-complexation), and then added to the autoclave. Close the autoclave, introduce 1.35 standard liters of hydrogen and 2.4 L of liquid propylene; stir at room temperature for 5 minutes (equivalent to prepolymerization); and raise the temperature to 95°C within 20 minutes under stirring. After the polymerization reaction at 95° C. for 1 hour, the stirring was stopped, the unpolymerized propylen...

Embodiment 3

[0115] High temperature (110°C) polymerization of olefins:

[0116] Using the catalyst solid component A1 prepared in Example 1, the polymerization was carried out according to the polymerization method of Example 2, except that the polymerization temperature was changed from 95°C to 110°C. The results of polymerization activity, polymer melt index (MI), polymer isotacticity (II) and polymer bulk density (BD) are shown in Table 1.

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Abstract

The invention relates to a catalyst solid ingredient, a catalyst containing the catalyst solid ingredient and a use of the catalyst in olefin polymerization. Through a contact reaction of an alkoxy magnesium carrier, a titanium compound and diethyl phthalate as an internal electron donor, the catalyst solid ingredient is prepared. The invention also provides the catalyst containing the catalyst solid ingredient and the use of the catalyst in olefin polymerization.

Description

technical field [0001] This invention relates to catalysts in the polymerization of olefins. It specifically relates to a catalyst solid component, and the application of the corresponding catalyst in olefin polymerization, including its application in catalyzing olefin polymerization at relatively high temperature. Background technique [0002] Currently, catalyst solid components based on magnesium, titanium and electron donors, known in the art as Ziegler-Natta (Z-N) catalysts, can be used for CH 2 =CHR Olefin polymerization, especially in the polymerization of α-olefins with 3 or more carbon atoms, can obtain polymers with higher yield and higher stereoregularity. High activity, high stereospecific ability, and high hydrogen sensitivity (polymer products with higher melt index obtained at the same amount of hydrogen) have always been several important indicators pursued by Z-N catalyst research. However, in the prior art, it is difficult to take into account the above ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/654C08F4/651C08F4/649C08F4/646C08F4/659C08F4/02
Inventor 谭忠周奇龙徐秀东严立安宋维玮李凤奎于金华尹姗姗张锐
Owner CHINA PETROLEUM & CHEM CORP
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