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Catalyst containing ether ester, and application of catalyst and ether ester to olefin polymerization

A technology for olefin polymerization and ester compounds, which is applied in the field of olefin polymerization, can solve problems such as catalyst difficulties, and achieve the effects of improving hydrogen adjustment sensitivity and isotacticity, high activity, and simple polymerization methods

Active Publication Date: 2017-03-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in general, it is difficult to effectively adjust the comprehensive performance of the catalyst through the external electron donor or the composition of the external electron donor compound, that is, to obtain a catalyst with superior orientation ability and hydrogen tuning sensitivity.

Method used

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  • Catalyst containing ether ester, and application of catalyst and ether ester to olefin polymerization
  • Catalyst containing ether ester, and application of catalyst and ether ester to olefin polymerization
  • Catalyst containing ether ester, and application of catalyst and ether ester to olefin polymerization

Examples

Experimental program
Comparison scheme
Effect test

preparation example

[0103] This preparation example is used to illustrate the preparation of titanium-containing solid catalyst components

[0104] According to the method disclosed in CN201010548601.8, the titanium-containing solid catalyst was prepared. Specifically, in the reactor fully replaced by high-purity nitrogen, 4.8 g of magnesium chloride, 70 ml of toluene, 4 ml of epichlorohydrin, and tributyl phosphate were sequentially added. (TBP) 12.5ml, 1.0ml tetraethoxysilane, heated to 60°C with stirring, and maintained for 1.0 hour, the solid was completely dissolved. 1.4 g of phthalic anhydride and 30 ml of toluene were added and maintained for an additional hour. Cool the solution to below -28°C and add TiCl dropwise within 1 hour 4 56ml (5ml / min), slowly raise the temperature to 85°C (5°C / min), during the heating process, the solid matter gradually precipitates, add 1.1ml of di-n-butyl phthalate, maintain the temperature at 85°C for 1 hour, after filtering, Washing twice with toluene gav...

Embodiment 1-16 and comparative example 1-4

[0106] According to the type of external electron donor, the addition ratio and the addition amount of hydrogen of Examples 1-16 and Comparative Examples 1-4 in Table 1, and carry out the polymerization reaction of propylene with reference to the following conditions

[0107] In a 5-liter autoclave, nitrogen flow was used to purge at 70°C for 1 hour, then the polymerization vessel was replaced 3 times with gas-phase propylene, and 5 ml of a hexane solution of an alkylaluminum compound (triethylaluminum) was introduced under nitrogen protection. The concentration of the external electron donor compound is 0.5mmol / ml), 1ml of the hexane solution of the external electron donor compound (the concentration of the external electron donor is 0.1mmol / ml), 10ml of anhydrous hexane and 8-12mg of the titanium-containing compound prepared in the preparation example solid catalyst components. Close the autoclave, introduce a certain volume of hydrogen (at 25°C, atmospheric pressure) (L) an...

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Abstract

The invention relates to the field of olefin polymerization and discloses application of an external electron donor containing an ether ester compound as shown in a formula (I), i.e., R<5>-O-R<4>(R<3>(COOR<1>)COOR<2>), to an olefin polymerization reaction. Moreover, the invention also discloses a catalyst containing the ether ester compound as shown in the formula (I) and application of the same to the olefin polymerization reaction. According to the invention, the ether ester compound is applied as the external electron donor to the olefin polymerization reaction, and in particular, a composition of the ether ester compound and a dialkoxysilane compound is applied to the olefin polymerization reaction; so the catalyst can maintain high activity and has improved hydrogen response, a finally prepared polymer has high activity and isotacticity, and a polymerization method is simple.

Description

technical field [0001] The invention relates to the field of olefin polymerization, in particular, the invention relates to the application of ether-based ester compounds as external electron donors in olefin polymerization reactions, a catalyst containing the ether-based esters, and the application of the catalyst in olefin polymerization reactions. Background technique [0002] As we all know, the catalyst system used in the polymerization of α-olefins and their mixtures generally consists of three parts, which are: (1) main catalyst (solid catalyst), (2) co-catalyst (usually alkyl aluminum compounds) and (3) an external electron donor compound added during polymerization. [0003] The use of one or several external electron donor compounds to control the stereoregularity and morphology of polymers during polymerization is well known to those skilled in the art. In addition to affecting the stereoregularity of the polymer, the external electron donor often affects the cat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/649C08F4/646C08F110/06
Inventor 张天一夏先知郭正阳
Owner CHINA PETROLEUM & CHEM CORP
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