Catalyst for polymerization or copolymerization of propylene and its preparation and application

A technology of propylene polymerization and catalyst, which is applied to the catalyst for propylene polymerization or copolymerization and its preparation method and the application field of the catalyst, which can solve the problems of separation and recovery of solvents polluting the environment, difficulties, etc., and achieve the reduction of environmental pollution and harm to the human body hazards, improved recovery, and easy separation

Inactive Publication Date: 2003-01-01
CHINA PETROCHEMICAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After repeated experiments, the inventor adopted the inert diluent used in the magnesium halide solution to replace dichloroethane as the washing solvent, thus solving the above-mentioned problems such as polluting the environment and difficulty in solvent separation and recovery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 11

[0030] Preparation of (A) component in embodiment 1.1, catalyst system

[0031]In the reactor fully replaced by high-purity nitrogen, add magnesium chloride (0.05mol) 4.8g, toluene 75ml, epichlorohydrin ECP 7.8ml (0.1mol), tributyl phosphate (TBP) 8.2ml (0.03mol) , raised to 50°C with stirring, and maintained for 2.5 hours. After the solid was completely dissolved, 1.2 g of phthalic anhydride was added and maintained for 1 hour. The solution was cooled to below -25°C, and TiCl was added dropwise within 1 hour. 4 56ml, slowly raise the temperature to 80°C, gradually precipitate the solid, add 2.7ml of diisobutyl phthalate (DIBP), and maintain 80°C for 1 hour, after hot filtration, add 100ml of toluene, wash twice to obtain brown yellow solid. Add toluene 60ml, TiCl 4 40ml was treated at 90°C for 2 hours, the filtrate was removed, and the treatment was repeated once. Add 100 ml of toluene, raise the temperature to 110° C., repeat washing three times for 10 minutes each, the...

Embodiment 2

[0034] In the preparation of component A of the catalyst system, in the final washing step in Example 1, three boiling washings of 100ml toluene were changed to washing (boiling) four times with 100ml of hexane, and the remaining operation steps, feed amount and polymerization method were implemented with the same method example 1. The results are shown in Table 1.

Embodiment 3

[0036] On the basis of embodiment 2, increase secondary hexane washing again (totally eight hexane washings), all the other are the same as embodiment 2. The results are shown in Table 1.

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PUM

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Abstract

The active component of the catalyst is prepared through dissolving magnesium halide in organic epoxide, organic phosphide and inert diluent to form homogeneous solution, mixing the solution with titanium tetrahalide or its derivative to separate solid matter in the presence of separate assistant, and washing the solid matter with the same inert solvent as that in forming magnesium halide solution, rather than more poisonous ethane dichloride. The preparation has no trouble of two kinds of solvent to form hard to separate azeotrope during solvent recovery, and has short technological process, high solvent recovering rate and low catalyst producing cost.

Description

technical field [0001] The present invention relates to a catalyst for propylene polymerization or copolymerization and its active component preparation method and [0002] application of the catalyst. Background technique [0003] Chinese patent 85100997 discloses a catalyst system for olefin polymerization and copolymerization, which catalyst system includes: (a) Ti-containing solid catalyst component, (b) alkylaluminum compound, (c) organosilicon compound Components, wherein the (A) component is formed by dissolving magnesium halide in organic epoxy compounds and organic phosphorus compounds to form a uniform solution, which is mixed with titanium tetrahalide or its derivatives, in the precipitation aids such as organic anhydrides, organic acids, In the presence of compounds such as ethers and ketones, solids are precipitated; the solids are treated with polycarboxylic acid esters to attach them to the solids, and then treated with titanium tetrahalide and diluents. Whe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F4/645C08F10/06
Inventor 毛炳权杨菊秀杨蔼春李珠兰郑颖赵芸杨荣新
Owner CHINA PETROCHEMICAL CORP
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