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A kind of magnesium halide adduct and its preparation method and application

An adduct, magnesium halide technology, applied in the direction of magnesium halide, magnesium chloride, organic chemistry, etc., to achieve the effect of no adhesion, high industrial application value, high polymerization activity

Active Publication Date: 2019-06-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the catalyst prepared by the magnesium halide adduct is used to catalyze the polymerization of olefins (especially propylene), the polymerization activity needs to be further improved.

Method used

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  • A kind of magnesium halide adduct and its preparation method and application
  • A kind of magnesium halide adduct and its preparation method and application
  • A kind of magnesium halide adduct and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0140] (1) In a 500mL reactor, add 150mL white oil (commercially purchased from Guangzhou Mingen Petrochemical Co., Ltd., by weight, water content is lower than 50ppm), 30g magnesium chloride containing 0.44wt% moisture (commercially purchased from Fushun City Xinyi Titanium Factory), 50mL absolute ethanol (commercially purchased from Beijing Chemical Plant, with a water content of less than 100ppm by weight) and 1mL 2-methoxybenzoyl chloride (commercially purchased from TOKYOKASEI KOGYO CO.LTD ), heated to 120°C with stirring. After 2 hours of constant temperature reaction, the mixture was pressed into 300 mL of methyl silicone oil (commercially purchased from Dow Corning, with a viscosity of 300 centipoise / 20° C., and a water content of less than 50 ppm by weight) preheated to 120 ° C. Stir for 30 minutes at a speed of 1 / min for emulsification. Then, the emulsified product was injected into 2L of hexane (by weight, water content less than 5ppm) pre-cooled to -30° C. with ni...

Embodiment 2

[0160] (1) Prepare spherical magnesium halide adducts in the same manner as in step (1) of Example 1. The difference is that the magnesium chloride used is magnesium chloride containing 0.65 wt% moisture, and the composition of the prepared magnesium halide adducts is shown in the table 1 listed.

[0161] The magnesium halide adduct was subjected to DSC analysis. In the obtained DSC graph, a melting peak appeared at 97.6° C. and 112.1° C. respectively, and the melting enthalpy value associated with the highest melting peak was 177.3 J / g.

[0162] The X-ray diffraction spectrum of this magnesium halide adduct shows, in the scope of the 2θ diffraction angle of 5-15 °, show to exist in 6.06 ° (14), 8.82 ° (100), 8.98 ° (50), 9.74 ° ( 66), 5 diffraction lines under the diffraction angle 2θ of 11.48°(11); the values ​​in brackets represent the intensity I / I relative to the strongest diffraction line 0 .

[0163] (2) The spherical catalyst component was prepared in the same manner...

Embodiment 3

[0174] (1) In a 500mL reaction kettle, add 150mL of white oil (commercially purchased from Guangzhou Mingen Petrochemical Co., Ltd., with a water content of less than 50ppm by weight), 30g of anhydrous magnesium chloride (commercially purchased from Fushun City Xinyi titanium factory), 50mL absolute ethanol (commercially purchased from Beijing Chemical Plant, the water content is less than 100ppm by weight), 1mL 2-methoxybenzoyl chloride (commercially purchased from TOKYOKASEI KOGYOCO.LTD) and 0.15g water , heated to 120°C with stirring. After 2 hours of constant temperature reaction, the mixture was pressed into 300 mL of methyl silicone oil (commercially purchased from Dow Corning, with a viscosity of 300 centipoise / 20° C., and a water content of less than 50 ppm by weight) preheated to 120 ° C. Stir for 30 minutes at a speed of 1 / min for emulsification. Then, the emulsified product was injected into 2L of hexane (by weight, water content less than 5ppm) pre-cooled to -30° ...

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Abstract

The invention discloses a magnesium halide adduct used for olefin polymerization, and a preparation method and an application thereof. The magnesium halide adduct is MgX<1>Y-mR<1>OH-n(LB1)-k(LB2)-p(LB3). LB1 is an alkoxy benzoate series compound represented by formula II, LB2 is a hydroxyl benzoate series compound represented by formula III, and LB3 is R<6>OH. A catalyst prepared through a reaction of the magnesium halide adduct, a titanium compound and an optional electron donor has good stereospecificity and high polymerization activity in olefin polymerization, and especially propylene polymerization, and has high industrial application values. The magnesium halide adduct has a good granular form and no special-shaped materials (such as spheroidic materials and bar-shaped materials), and the particles have no adhesion phenomenon.

Description

technical field [0001] The invention relates to a magnesium halide adduct, a preparation method and application thereof. Background technique [0002] Magnesium halide-alcohol adducts and their use as supports in the preparation of olefin polymerization catalysts are well known in the art. The adduct reacts with a titanium halide and an electron donor compound to obtain a catalyst. When the obtained catalyst is used for olefin (especially propylene) polymerization, it has high polymerization activity and stereospecific ability, and the obtained polymer also has relatively high Good particle morphology and high apparent density. [0003] Most of the disclosed magnesium halide·alcohol adducts are alcoholates of magnesium chloride, usually including binary components of magnesium chloride and alcohol. Wherein, some disclosed adducts of magnesium chloride and alcohol also contain a small amount of water. For example: the adducts of magnesium chloride and alcohol disclosed in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C69/92C07C69/84C07C31/08C07C31/04C01F5/30C08F10/00C08F10/06C08F4/646
CPCY02P20/52
Inventor 张纪贵夏先知刘月祥李威莅高富堂高平凌永泰赵瑾彭人琪谭扬张志会林洁段瑞林
Owner CHINA PETROLEUM & CHEM CORP
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