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A kind of butene-1 polymerization catalyst and its preparation and application

A technology of catalyst and butene, which is applied in the field of butene-1 polymerization catalyst and its preparation and application, can solve the problems of narrow molecular weight distribution, unfavorable product processing, etc., and achieve the effects of improving performance, saving cost and improving processability

Active Publication Date: 2017-05-10
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although diester electron donors are not as active as diethers, their molecular weight distribution is wider, which is beneficial to improve the processability of products; although diether electron donors have high activity and strong orientation ability, their molecular weight distribution is narrow and not Conducive to product processing and development of more product grades
However, for the new electron donor containing ether bond and ester bond in the same compound, the combination of diester and diether electron donor, and the new phthalate electron donor for butene- 1 The impact of aggregation has not been reported

Method used

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  • A kind of butene-1 polymerization catalyst and its preparation and application
  • A kind of butene-1 polymerization catalyst and its preparation and application
  • A kind of butene-1 polymerization catalyst and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Under the protection of high-purity argon, 60 mL of n-decane, 3.0 g of anhydrous magnesium chloride and 12.4 mL of isooctyl alcohol were successively added to a reactor with mechanical stirring, and the temperature was raised to 130 ° C for 2 hours to obtain a homogeneous phase solution A,

[0037] (2) Add 1 g of phthalic anhydride (PA) to the above reactant A solution, and react at 130°C for 2 hours to obtain reactant B, and cool to room temperature,

[0038] (3) Add all the reactants B obtained above dropwise to 100mL TiCl at a temperature of -10°C within 2 hours 4 In the solution, the temperature of the mixture was maintained at -10°C for 0.5 hours after the drop was completed, then the temperature was raised to 110°C within 6 hours under stirring, and this temperature was maintained for 2 hours to obtain a reaction mixture C,

[0039] (4) Reaction mixture C is separated by hot filtration to obtain solid product D,

[0040] (5) Then add 100mL TiCl to the solid ...

Embodiment 12

[0063] The process of Example 1 was repeated, except that the external electron donor was changed to diphenyldimethoxysilane (DDS), and other conditions remained unchanged. The results are listed in Table 2.

Embodiment 13

[0065] The process of Example 8 was repeated, except that the amount of hydrogen was increased to 0.15 MPa, and other conditions remained unchanged. The results are listed in Table 2.

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Abstract

The present invention relates to a butene-1 polymerization catalyst, preparation and applications thereof. According to the catalyst, anhydrous magnesium chloride is adopted as a carrier, titanium tetrachloride loaded on the magnesium chloride is adopted as an active component, an electron donor compound is adopted as a modifier, the content of the loaded component Ti is 1.50-4.20 wt%, and the content of the electron donor compound is 0.10-6.56 wt%. The catalyst is used for butene-1 homopolymerization. With the method, the problems of not high activity, low polymer isotacticity, difficultly-controllable polymer molecular weight distribution and hydrogen modulation insensitivity of the general catalyst are solved, and different electron donors, particularly the compound concurrently containing the ether ester bond, is added during the catalyst preparation to produce the polybutene-1 resin with characteristics of controllable polymer isotacticity, controllable polymer molecular weight and controllable polymer molecular weight distribution so as to improve the product performance, improve the resin processability, and broaden the product applications.

Description

technical field [0001] The invention relates to a butene-1 polymerization catalyst and its preparation method, and its application in butene-1 polymerization to produce polybutene-1 with different isotacticity and adjustable molecular weight distribution. Background technique [0002] Polybutene-1 is made of butene-1 monomer as raw material, and it is produced by slurry method, gas phase method or bulk method in the presence of a catalyst. It is a semi-crystalline polyolefin thermoplastic resin with good mechanical properties; outstanding environmental stress crack resistance and heat resistance; excellent creep resistance, repeated winding and continuous, even at elevated temperatures Excellent creep resistance; good chemical corrosion resistance; and wear resistance similar to ultra-high molecular weight polyethylene; high filler filling, etc. Therefore, it can be used to produce pipes, films, plates and various containers, etc., especially it can be used for a long time ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F110/08C08F4/649C08F4/654C08F4/651
Inventor 任合刚王斯晗熊国辉崔立娟姜进宪李宝强李群英邹恩广王兆斌王登飞王亚丽赵广友张瑞国海峰杨国兴赵兴龙孙彬彬
Owner PETROCHINA CO LTD
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