Non-metallocene tridentate binuclear titanium complex, preparation method and purpose thereof

A titanium complex, non-locene technology, applied in the field of non-locene tridentate binuclear titanium complexes, can solve the problems of polymer molecular weight increase, molecular weight distribution widening, bimetallic structure asymmetry, etc., to achieve mild reaction conditions, High polymerization activity and good stability

Inactive Publication Date: 2014-12-17
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2. The molecular weight of the resulting polymer will generally increase; and due to the possible structural asymmetry of the bimetal, two different active centers will be generated, resulting in a broadening of the molecular weight distribution

Method used

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  • Non-metallocene tridentate binuclear titanium complex, preparation method and purpose thereof
  • Non-metallocene tridentate binuclear titanium complex, preparation method and purpose thereof
  • Non-metallocene tridentate binuclear titanium complex, preparation method and purpose thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Synthesis of Ligand L1

[0040]

[0041] Add 10.01mol of biphenyl salicylaldehyde D, 0.01mol of o-phenoxyaniline and 50ml of toluene solvent in the three-necked flask, 0.02g of p-toluenesulfonic acid as a catalyst, heat up and reflux for 12 hours, then add 0.01mol of o-propylthioaniline, and then After reflux for 12 hours, the reaction was stopped, and the product was separated by silica gel column chromatography to obtain ligand L1 with a yield of 18%. 1 HNMR (400MHz, CDCl 3 ): δ8.87(2H, s, N=CH), 7.68-7.14(19H, m, Ph-H), 5.35(2H, s, O-H), 2.94(2H, t, CH 2 ),1.35(2H,m,CH 2 ),0.90(3H,t,CH 3 ); Elemental analysis: theoretical value (%): C, 75.24; H, 5.41; N, 5.01; test value (%): C, 75.05; H, 5.68; N, 4.81.

Embodiment 2

[0043] Synthesis of Ligand L2

[0044]

[0045] The synthesis method is as shown in Example 1, and the ligand L2 is obtained with a yield of 22%. 1 HNMR (400MHz, CDCl 3 ):δ7.78-7.25(23H,m,Ph-H),5.35(2H,s,O-H),3.96(2H,s,CH 2 ),3.58(1H,s,O-H),1.72-1.43(10H,m,C-H),1.81(3H,s,CH 3 ),1.35(18H,s,C(CH 3 ) 3 ); Elemental analysis: Theoretical value (%): C, 79.58; H, 7.30; N, 3.44; Test value (%): C, 79.96; H, 7.23; N, 3.51.

Embodiment 3

[0047] Synthesis of Ligand L3

[0048]

[0049] Add 0.01mol of 4,8-diisopropyl-3,7-dihydroxy-2,6-anthracenedicarbaldehyde D3, 0.02mol of 2-hexeselenopropylamine, 2 drops of glacial acetic acid, and 60ml of toluene into the three-necked flask As a solvent, the water trap was refluxed for 36 hours under the protection of nitrogen, and the reaction was monitored by TLC. The reaction was stopped and the solvent was spin-dried. The product L3 was obtained by recrystallization from a mixed solvent of ethanol and water. Yield: 56.5%. 1 HNMR (400MHz, CDCl 3 ):δ8.56(2H,s,N=CH),8.34-8.20(4H,m,Ph-H),5.38(2H,s,O-H),3.70(4H,d,N-CH 2 ),2.87(2H,m,CH),1.70-0.88(46H,m,CH n ); Elemental analysis: Theoretical value (%): C, 63.31; H, 7.97; N, 3.69; Test value (%): C, 63.45; H, 7.51; N, 3.63.

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Abstract

The invention discloses a non-metallocene tridentate binuclear titanium complex, a preparation method and purpose thereof in catalysis of ethylene homopolymerization and catalysis of copolymerization of ethylene and alpha-olefin and cycloolefin or dialkene. The non-metallocene tridentate binuclear titanium complex prepared by the method of the invention has the advantages of novel design, simple preparation method, mild reaction conditions, low cost of catalyst and high ethylene polymerization activity, and the activity for catalysis of ethylene polymerization is higher than 106g PE / molTi.h; and compared with a corresponding mononuclear catalyst, the complex has the advantages of good stability, long service life, less cocatalyst amount, and wide molecular weight distribution width of the obtained polymer.

Description

technical field [0001] The invention relates to a non-cene tridentate dinuclear titanium complex, a preparation method and an application, which belong to the technical field of metal organic chemistry and the technical field of polymer materials. Background technique [0002] Polymer materials are one of the pillar industries of the national economy, among which polyolefin has always been the most important product. Polyolefin is an important class of polymer materials. It has many advantages such as abundant raw materials, low price, and easy processing and molding. In addition, in terms of product performance, it has low relative density, good chemical resistance and water resistance; good mechanical strength, characteristics of electrical insulation. It can be used to make films, pipes, plates, various shaped products, wires and cables, etc. It has a wide range of uses in agriculture, packaging, electronics, electricity, automobiles, machinery, daily sundries, etc. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F4/643C08F4/642C08F10/02C07F7/28
Inventor 谢光勇刘公毅李龙张爱清熊焰
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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