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New olefine polymerization catalyst

A technology of olefin polymerization and catalyst, which is applied in the field of new olefin polymerization catalysts, and can solve problems such as the inability to control the structure and properties of polymers

Inactive Publication Date: 2002-08-21
SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of solid catalyst with multiple active sites cannot control the structure and performance of the polymer by adjusting the structure of the catalyst.

Method used

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  • New olefine polymerization catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] Example 1 Synthesis of Ligand L1

[0096] In a 250ml reaction flask, add 2.34g (10.0mmol) 3,5-di-tert-butyl salicylaldehyde, 2.3g (8.8mmol) (o-aminophenyl) diphenylamine, 100ml absolute ethanol, heat After reflux for 24 hours, the reaction was stopped and allowed to cool to room temperature to obtain the product, which was washed several times with cold ethanol and dried to obtain 3.5 g (81%) of yellow crystal L1. Elemental analysis: Measured (calculated value): C: 83.19 (83.15) H: 7.60 (7.61) N: 5.87 (5.88) 1 HNMR (300MHz CDCl 3 ): δ13.6 (s O-H); 8.6 (s CH=N); 7.5-7.0 (m, Aryl H) 1.5, 1.3 (s, st-Bu-H)

Embodiment 2

[0097] Example 2 Synthesis of Ligand L2

[0098] In a 250ml reaction flask, add 5.62g (24mmol) 3,5-di-tert-butyl salicylaldehyde, 3.68g (20mmol) phenyl o-dimethylaminophenyl ether, 100ml absolute ethanol, and heat to reflux for 20h Afterwards, the reaction was stopped, cooled to room temperature to obtain the product, washed several times with absolute ethanol, and dried to obtain 5.2 g (65%) of yellow crystal L2. Elemental analysis: measured (calculated value): C: 80.76 (80.76); H: 7.77 (7.78); N: 3.51 (3.49) 1 HNMR (300MHz CDCl 3 ): δ (ppm) 13.4 (s, O-H); 8.7 (s CH=N); 7.4-7.0 (m, Aryl-H); 1.4, 1.3 (s, s t-Bu-H)

Embodiment 3

[0099] Example 3 Synthesis of Ligand L3

[0100] In reaction bottle, add 2.8g (12.0mmol) 3,5-di-tert-butyl salicylaldehyde, 2.01g (10.0mmol) phenyl, 2-aminophenyl sulfide, 25ml absolute ethanol, a small amount of glacial acetic acid, After reflux and stirring for 2 h, the reaction was stopped, and a yellow-green solid precipitated after cooling, and 1.3 g (44.4%) of ligand L3 was obtained after recrystallization. Elemental analysis: measured (calculated value): C: 77.70 (77.65), H: 7.50 (7.48), N: 3.38 (3.35): 1 HNMR (300MHz CDCl 3 ): δ (ppm) 13.3 (s O-H), 8.6 (s CH = N), 7.45-7.11 (m Aryl H), 1.47, 1.32 (s, s t-Bu-H)

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Abstract

The present invention relates to a catalyst or catalyst system for polymerization and copolymerization of olefine and its synthesis process and the application in catalyzing olefine polymerization. The catalyst is a kind III to XI transition metal compound with multitooth ligand.

Description

technical field [0001] The invention relates to an olefin polymerization and copolymerization catalyst (catalyst system), a synthesis method and a homogeneous (directly used without loading) or heterogeneous (used after being loaded with silica, alumina, magnesium chloride, etc.) system to catalyze olefin polymerization applied research. The catalyst involves a new class of transition metal complexes from Group III to Group XI of multidentate ligands. Background technique [0002] Since the discovery of the Ziegler-Natta catalyst in the 1950s, highly active MgCl 2 The catalyst of supported titanium shows good catalytic performance, (K.Ziegler, etc., Angew.Chem.1995,67,424; K.Ziegler etc., Angew.Chem.1995,67,541; N.Kashiwa etc., USP-3642746, 1968) At present in the industry, this catalyst has been used in the production of high-density polyethylene (HDPE), linear low-density polyethylene (LLDPE), and syndiotactic polypropylene (i-pp). However, this kind of solid catalyst w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F4/42C08F10/00
Inventor 唐勇胡蔚秋孙秀丽王聪张玉良
Owner SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI
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