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Supported alpha-diimine compound and application of supported alpha-diimine compound in olefin polymerization

A diimine compound, supported technology, applied in nickel organic compounds, silicon organic compounds, compounds containing elements of Group 8/9/10/18 of the periodic table, etc., can solve the problem of poor thermal stability and high amount of cocatalyst , the polymer morphology is difficult to control and other problems, to achieve the effect of good thermal stability, strong chemical bond force, and reduced impact

Inactive Publication Date: 2015-07-29
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an α-diimine post-transition metal catalyst in the current technology in view of the problems of sticky kettle, difficult control of polymer morphology, large amount of co-catalyst, and poor thermal stability in the practical application of homogeneous α-diimine post-transition metal catalysts. Imine compounds and their loaded α-diimine compounds

Method used

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  • Supported alpha-diimine compound and application of supported alpha-diimine compound in olefin polymerization
  • Supported alpha-diimine compound and application of supported alpha-diimine compound in olefin polymerization
  • Supported alpha-diimine compound and application of supported alpha-diimine compound in olefin polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Synthesis and preparation of 5-{4-[3-(silica oxydimethylsilyl)propoxy]phenoxy}acenaphthoquinonebis(2,6-diisopropyl)benzimine support e1 The route is as follows:

[0036]

[0037] The specific operation steps are as follows:

[0038] Synthetic references of 5-bromoacenaphthylquinone [J Am Chem Soc,2013,135(46):17469], synthetic references of 4-allyloxyphenol a1 [J Med Chem,2011,54(13): 4659]

[0039] Synthesis of 5-(4-allyloxyphenoxy)acenaphthenequinone b1:

[0040] Add 12.7g (48.6mmol) of 5-bromoacenaphthylquinone in the reaction flask of 100ml, 13.8g (100mmol) K 2 CO 3 , 33ml of dry DMF, and start stirring. Add 15g (100mmol) a1 during the stirring process, and react at 60°C. The reaction is stopped after the chromatographic trace traces that the reactants have completely reacted. Pour the dark brown solution of the reaction into a saturated NaCl solution to become a brown suspension, extract 2-3 times with dichloromethane, and use anhydrous MgSO for the organi...

Embodiment 2

[0050] Synthesis and preparation of 5-{4-[3-(silicadioxymethylsilyl)propoxy]phenoxy}acenaphthoquinone bis(2,6-diisopropyl)phenylimide g1 The route is as follows:

[0051]

[0052] Preparation process of 5-{4-[3-(dichloromonomethylsilyl)propoxy]phenoxy}acenaphthoquinone bis(2,6-diisopropyl)phenylimine f1 and compound d1 in Example 1 Same, where dichloromonomethylsilane is used instead of monochlorodimethylsilane; SiO 2 / MgCl 2 The preparation process of the composite carrier is the same as in Example 1, wherein MgCl 2 and SiO 2 The masses are all 0.5 g; the specific synthesis steps of the load g1 are the same as the synthesis steps of the load e1 in Example 1. Elemental analysis of load g1: C, 22.12%; N, 1.10%.

Embodiment 3

[0054] Synthesis of 5-{4-[3-(Silicatrioxysilyl)propoxy]phenoxy}acenaphthoquinone bis(2,6-diisopropyl)phenylimide i1

[0055] Its preparation route is as follows:

[0056]

[0057] 5-{4-[3-(trichlorosilicon) propoxyl]phenoxy}acenaphthenequinone bis(2,6-diisopropyl)phenylimine h1 is prepared in the same way as compound d1 in Example 1, wherein Using trichlorosilane instead of monochlorodimethylsilane; SiO 2 / MgCl 2 The preparation process of the composite carrier is the same as in Example 1, wherein MgCl 2 and SiO 2 The mass ratio is equal to 5; the specific synthesis steps of the loading substance i1 are the same as those of the loading substance e1 in Example 1. Elemental analysis of load i1: C, 33.66%; N, 1.67%.

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Abstract

The invention relates to a supported alpha-diimine compound and an application of the supported alpha-diimine compound in olefin polymerization. The compound has the following structural formula as shown in the specification, wherein R1 and R2 are identical or different C6-C60 aromatic alkyl; R3 is H or C1-C20 alkyl; R4 is C1-C20 alkyl; R5 is C1-C20 alkoxyl or a chlorine atom; n is 1, 2, 3, 4, 5, 6 or 7; an alpha-diimine compound reacts with a carrier to be supported on the carrier in a covalent bonding manner to form the supported alpha-diimine compound; the supported alpha-diimine compound is matched with a metal compound of nickel (II) and palladium (II) to form a supported alpha-diimine metal complex; and the supported alpha-diimine compound is applied to the olefin polymerization as a main catalyst and can regulate polymerization activity, as well as a molecular chain structure, molecular weight and distribution of a polymer.

Description

technical field [0001] The invention relates to the field of olefin catalytic polymerization, in particular to a supported α-diimine compound and its application in olefin polymerization. Background technique [0002] Polyolefin materials synthesized by coordination polymerization are widely used in many fields of production and life because of their excellent performance in various aspects and low price. The core of polyolefin preparation technology is the catalyst system. The continuous research and development of catalyst system has promoted the development of high-performance polyolefin preparation technology. On the basis of traditional Ziegler-Natta catalysts, people have successively developed metallocene catalysts and non-metallocene catalysts. Non-metallocene catalysts are further divided into pre-transition non-metallocene catalysts and post-transition non-metallocene catalysts. In 1995, Brookhart et al. reported a post-transition metal catalyst (J Am Chem Soc, 1...

Claims

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Application Information

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IPC IPC(8): C07F7/08C07F15/00C07F15/04C08F4/70C08F110/02C08F110/06C08F210/16C08F110/08C08F110/14C08F232/08C08F212/36
Inventor 侯彦辉韩伟伟杨敏翟飞帆胡博文路晓敏李琴
Owner TIANJIN POLYTECHNIC UNIV
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