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Olefin polymerization catalyst carrier, preparation method thereof and olefin polymerization catalyst component

A catalyst carrier, a technology for olefin polymerization, applied in the field of olefin polymerization catalyst carrier, preparation of olefin polymerization catalyst carrier, and olefin polymerization catalyst component, can solve the problem of difficulty in obtaining magnesium alkoxides, improve particle shape, increase strength, Reduce the effect of shattering

Active Publication Date: 2022-05-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alkoxy group in the dialkoxymagnesium used is a linear alkoxy group containing 6 to 12 carbon atoms or a branched chain alkoxy group with 5 to 12 carbon atoms, so that it can form a magnesium alkoxide soluble in liquid hydrocarbons solution, but this alkoxymagnesium is difficult to obtain

Method used

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  • Olefin polymerization catalyst carrier, preparation method thereof and olefin polymerization catalyst component
  • Olefin polymerization catalyst carrier, preparation method thereof and olefin polymerization catalyst component
  • Olefin polymerization catalyst carrier, preparation method thereof and olefin polymerization catalyst component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] In the reaction kettle of 1.0L, add polyvinylpyrrolidone (PVP, molecular weight=58000) 1.6g successively, ethanol 2.8mol, magnesium chloride 0.2mol, ferrous chloride 2mmol, triethanolamine 2mmol, under stirring (450rpm) be warming up to 70 °C. After 1 hour of constant temperature reaction, 0.6 mol of epichlorohydrin was added, the temperature was maintained for 0.5 hour, the liquid was filtered off, the solid was washed 5 times with hexane, and dried in vacuum to obtain solid component particles. Through nuclear magnetic resonance, elemental analysis and gas chromatography characterization, the carrier structure is as follows:

[0082]

[0083] Carrier particle size distribution D50=71.1μm, Span=0.65, see the particle shape figure 1 .

Embodiment 2

[0085] The difference between the preparation method and Example 1 is only that the addition amount of ferrous chloride is 4 mmol. Through nuclear magnetic resonance, elemental analysis and gas chromatography characterization, the carrier structure is as follows:

[0086]

[0087] Carrier particle size distribution D50=68.2 μm, Span=0.67.

Embodiment 3

[0089] The difference between the preparation method and Example 1 is only that the amount of ferrous chloride added is 8 mmol. Through nuclear magnetic resonance, elemental analysis and gas chromatography characterization, the carrier structure is as follows:

[0090]

[0091] Carrier particle size distribution D50=39.8 μm, Span=0.68.

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Abstract

The invention discloses an olefin polymerization catalyst carrier and a preparation method thereof. The olefin polymerization catalyst carrier has the composition as shown in a general formula (I), wherein R1 is C1-C12 straight chain or branched chain alkyl; r2 and R3 are the same or different and are hydrogen or C1-C5 straight-chain or branched-chain alkyl groups, and hydrogen on the alkyl groups can be optionally substituted by halogen atoms; x and Y are selected from halogens; m ranges from 0.1 to 1.9; n ranges from 0.1 to 1.9; m + n = 2; 0 lt; i < = 2; 0 lt; j < = 2; 0 lt; k < = 2; i + j + k = 3; 0 lt; p < = 0.1; 0 lt; zlt, zlt; 0.1 part; lB is a compound as shown in a general formula (II). The carrier prepared by the invention has better particle morphology and higher strength, so that the catalyst prepared by the carrier is less broken. In addition, the catalyst has better hydrogen regulation sensitivity when being used for olefin polymerization, especially propylene polymerization or copolymerization.

Description

technical field [0001] The invention belongs to the field of catalysts, in particular to an olefin polymerization catalyst carrier, a preparation method of an olefin polymerization catalyst carrier and an olefin polymerization catalyst component. technical background [0002] Most of the catalysts used for olefin polymerization are prepared by supporting titanium halide on active anhydrous magnesium chloride. Wherein, a method for preparing active magnesium chloride is to mix anhydrous α-MgCl 2 It reacts with an alcohol to form an adduct, and then uses this adduct as a carrier to support titanium halide to prepare a solid component of an olefin polymerization catalyst. The magnesium chloride alcoholate can be prepared by methods such as spray drying, spray cooling, high pressure extrusion, high speed stirring, emulsifier, supergravity rotating bed and the like. Such as: magnesium chloride alcoholates disclosed in US4421674, US4469648, WO8707620, WO9311166, US5100849, US602...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F110/06C08F4/02C08F4/646
CPCC08F10/00C08F110/06C08F4/02C08F4/6465C08F2500/15C08F2500/12Y02P20/52
Inventor 李威莅夏先知周俊领刘月祥凌永泰刘涛赵瑾高富堂任春红谭扬陈龙
Owner CHINA PETROLEUM & CHEM CORP
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