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Heteronuclear bimetallic complexes, preparation method thereof and application of complexes in preparation of bimodal-distribution olefin polymers

A complex and bimetallic technology, applied in the direction of organic chemistry, can solve the problems of cumbersome operation, time-consuming, low efficiency, etc., and achieve the effect of high catalytic activity

Active Publication Date: 2019-10-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, EP1472295B1 prepares an elastomer with high Mooney viscosity in one reactor, and an elastomer with low Mooney viscosity in another reactor, and then mixes the two to obtain a polymer with both processability and physical and mechanical properties. Olefin elastomers; however, such methods are cumbersome, time-consuming, and inefficient

Method used

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  • Heteronuclear bimetallic complexes, preparation method thereof and application of complexes in preparation of bimodal-distribution olefin polymers
  • Heteronuclear bimetallic complexes, preparation method thereof and application of complexes in preparation of bimodal-distribution olefin polymers
  • Heteronuclear bimetallic complexes, preparation method thereof and application of complexes in preparation of bimodal-distribution olefin polymers

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preparation example Construction

[0224] The second aspect of the present invention provides a method for preparing the above-mentioned heteronuclear bimetallic complex, the method comprising:

[0225] (1) carrying out the first substitution reaction with the compound shown in formula (4) and organolithium reagent;

[0226] (2) carrying out the second substitution reaction with the product of the first substitution reaction and the compound shown in formula (a), to obtain the compound shown in formula (3);

[0227] (3) performing Staudinger reaction on the compound shown in formula (3) and the azidosilane compound shown in formula (b), to obtain the compound shown in formula (2);

[0228] (4) carry out the third substitution reaction with the compound shown in formula (2) and the compound shown in formula (c), obtain the compound shown in formula (1');

[0229] Optionally, in the case where at least one of the n Xs in the compound represented by the formula (1') obtained in step (4) is a halogen, the method f...

Embodiment 1

[0364] This example is used to illustrate the heteronuclear bimetallic complex of the present invention and its preparation method.

[0365]

[0366] Prepare according to the above reaction formula, specifically:

[0367] (1) Dilute 9,9-dimethylxanthene (0.02mol) and tetramethylethylenediamine (TMEDA) (42mmol) in hexane (50mL), and add dropwise at -78°C -BuLi (42mmol) in hexane solution (addition completed within about 5min), reacted for 1h, then raised to room temperature (about 25°C), and continued stirring for 16h;

[0368] (2) Then add 15 mL of diphenylphosphine chloride (42 mmol) in n-hexane solution dropwise to the reaction system of step (1) in an ice-water bath (complete addition within about 5 min), and then continue at room temperature (about 25 ° C) ) under stirring reaction for 16h; the solvent was removed by rotary evaporation to obtain a light yellow viscous oil, which was washed with acetone and dried in vacuo to obtain 9.7g white powder, which was the compo...

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Abstract

The invention relates to the field of catalysts for olefin polymerization, in particular to heteronuclear bimetallic complexes, a preparation method thereof and application of the complexes in preparation of bimodal-distribution olefin polymers. The heteronuclear bimetallic complexes are complexes shown in a formula (1). The heteronuclear bimetallic complexes exhibit high catalytic activity in catalysis of olefin polymerization, and can be used as a main catalyst for polymerization, and when the heteronuclear bimetallic complexes are used as a main catalyst, only one catalyst system is used for preparing the olefin polymers with distinct bimodal distribution in a singular reactor.

Description

technical field [0001] The invention relates to the field of catalysts for olefin polymerization, in particular to a heteronuclear bimetallic complex, a preparation method thereof and an application in the preparation of bimodal distribution olefin polymers. Background technique [0002] Polyolefin is a widely used and very important class of polymer materials, including homopolymers and copolymers of ethylene and alpha olefins. Polyolefins play a pivotal role in the synthetic resin industry and can be used as films, pipes, wires and cables. [0003] The advancement of olefin polymerization catalyst technology is the direct impetus for the technological progress of the polyolefin industry. From the traditional Ziegler-Natta catalysts to the single-site metallocene catalysts that appeared in the late 1980s, and then to the highly active "post-metallocene" and late-transition metal catalysts at the end of the 20th century, the catalytic polymerization of olefins has always be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F19/00C08F10/02C08F4/70
CPCC07F19/005C08F10/02C08F2500/05C08F4/70
Inventor 陈建军王铁石唐正伟徐一兵徐林冯增国
Owner CHINA PETROLEUM & CHEM CORP
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