Unlock instant, AI-driven research and patent intelligence for your innovation.

Polymerization catalyst of neutral nickel alkene with binaphthyl type binuclear

An olefin polymerization and catalyst technology is applied in the field of preparation of the above-mentioned binaphthyl-type dual-core neutral nickel olefin polymerization catalyst, and can solve problems such as difficult preparation and the like

Inactive Publication Date: 2003-05-07
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In 1998, the Grubbs research group of the California Institute of Technology reported a salicylaldimine-type neutral nickel olefin polymerization catalyst (Organometallics 1998,17,3149-3151). It can catalyze the copolymerization of ethylene and norbornene or its biological species (Sciences 2000, 287, 460-462). The key to obtain high activity is to introduce a bulky substituent at the ortho position of the ligand phenolic hydroxyl group, but this catalyst is not easy to preparation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polymerization catalyst of neutral nickel alkene with binaphthyl type binuclear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Add 3.42g (10mmol) of 2,2'-binaphthol-5,5'-dimethylaldehyde, 3.72g (21.0mmol) of 2,6-diisopropylaniline, and 30ml of methanol into a dry 100mL reaction flask, and reflux Response 2h. Filtration, recrystallization from ethanol, and vacuum drying at 60°C for 48 hours gave light yellow Schiff's base (C 46 h 48 N 2 o 2 )5.49g, yield 83%.

Embodiment 2

[0013] Replace 2,6-diisopropylaniline in Example 1 with 2-methyl-6-isopropylaniline 3.13g (21.0mmol), and the operation is the same as in Example 1 to obtain light yellow Schiff's base (C 42 h 40 N 2 o 2 ) 4.90g, yield 81%.

Embodiment 3

[0015] With 2,4,6-triisopropylaniline 4.61g (21.0mmol) to replace 2,6-diisopropylaniline in Example 1, the operation is the same as in Example 1, to obtain light yellow Schiff's base (C 52 h 60 N 2 o 2 )5.81g, yield 78%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A dinaphthalene type dual-nuclear neutral Ni catalyst is disclosed, which can be used for the catalytic polymerization of ethylene, ethylene-norbornaene (or its derivative), or ethylene-polar monomer. Its structural formula is disclosed.

Description

technical field [0001] The invention relates to a binaphthyl type binuclear neutral nickel olefin polymerization catalyst. [0002] The present invention also relates to a preparation method of the binaphthyl type binuclear neutral nickel olefin polymerization catalyst. [0003] The present invention also relates to the application of the binaphthalene type binuclear neutral nickel olefin polymerization catalyst in catalyzing ethylene polymerization, copolymerization of ethylene and norbornene or its derivatives, and copolymerization of ethylene and polar monomers. Background technique [0004] Polyolefin is an important class of polymer materials, accounting for about 50% of plastics, widely used in industry, agriculture, national defense, transportation and people's daily life. Olefins are polymerized under the action of catalysts to produce high molecular compounds, namely polyolefins. Catalyst is the core of the development of polyolefin industry and the key to control...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08F4/80C08F10/00
Inventor 李悦生李晓芳胡涛
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI