Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Metallocene catalyst and preparation method and application thereof

A metallocene catalyst and reaction technology, applied in the field of metallocene catalysts, can solve the problem that the loading method of a novel restricted configuration double-bridged metallocene compound has not been reported, and achieves strong electron withdrawing, high loading rate and low production cost. Effect

Active Publication Date: 2021-03-26
PETROCHINA CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are many loading methods for metallocene catalysts, but there are no reports on the loading methods of novel constrained configuration double-bridge metallocene compounds

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
  • Metallocene catalyst and preparation method and application thereof
  • Metallocene catalyst and preparation method and application thereof
  • Metallocene catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0043] In addition, the present invention also provides a method for preparing a metallocene catalyst, comprising the steps of:

[0044] Step 1, reacting the halide of indene with the activated carrier to generate the carrier alcoholated indene;

[0045] Step 2, reacting the carrier alcoholized indene with formula II 2-pyrrole carboxaldehyde or its derivatives to prepare formula III nitrogen-containing fulvene, R 1 , R 2 and R 3 independently selected from H, CH 3 -, saturated or double bond containing straight or branched chain C 2 -C 10 One of the hydrocarbon groups;

[0046] Step 3, reducing the nitrogen-containing fulvene of formula III to generate a ligand of formula IV containing pyrrole N heterocycle; and

[0047] Step 4, the ligand of formula IV containing pyrrole N heterocycle and M[N(R 4 ) 2 ] 4 A complex reaction occurs to generate a metallocene catalyst of formula Ⅰ, R 4 C is a straight or branched chain 1 -C 5 alkyl;

[0048]

[0049] In detail, st...

Embodiment 1

[0061] A synthetic supported metallocene catalyst, expressed as carrier-O-[(η 5 -C 9 h 6 )CH 2 (2-(3-CH 3 -4-CH 3 -C 4 HN))]Zr(NMe 2 ) 2 , wherein the inorganic carrier is silica, the activation process is to dry the inorganic carrier at 185°C for 18 hours, then bake it in oxygen or air at 600°C for 16 hours, and then replace it with an inert gas and keep it at the firing temperature for 15 hours. Cool to room temperature.

[0062] Place the activated carrier and indene bromide in an alkaline solution, control the temperature of the mixture at 60°C, stir at a constant temperature for 32 hours, and filter to obtain the carrier indene alcohol solid; the mass ratio of the carrier to indene bromide is 1:0.2. 3-CH 3 -4-CH 3 -5-CHO-C 4 HN and the carrier alcoholized indene were placed in the organic solvent acetaldehyde, cooled to -2°C, tetrahydropyrrole, 3-CH 3 -4-CH 3 -C 4 The ratio of HN-CHO, indene alcoholate and tetrahydropyrrole is 1:1.1:1.1. Then rise to room t...

Embodiment 2

[0066] A synthetic supported metallocene catalyst, expressed as carrier-O-[(η 5 -C 9 h 6 )CH 2 (2-(3-CH 3 -C 4 h 2 N))]Zr(NEt 2 ) 2 , wherein the inorganic carrier is silica, the activation process is to dry the inorganic carrier at 100°C for 20 hours, then bake it in oxygen or air at 500°C for 20 hours, and then replace it with an inert gas and keep it at the firing temperature for 12 hours. Cool to room temperature.

[0067] Put the activated carrier and indene chloride in an alkaline solution, control the temperature of the mixture at 120°C, stir at a constant temperature for 25 hours, and filter to obtain the carrier alcoholated indene solid; the mass ratio of the carrier to indene chloride is 1:0.3. 3-CH 3 -C 4 h 2 N-CHO and the carrier indene alcoholate are placed in an organic solvent, cooled to -8°C, and tetrahydropyrrole, pyrrole formaldehyde or its derivatives, indene alcoholate and tetrahydropyrrole are added dropwise in a ratio of 1:1.3: 1.3. Then rise...

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

The invention discloses a metallocene catalyst as well as a preparation method and application thereof. The metallocene catalyst comprises a pyrrole metallocene heterocyclic compound and a carrier, wherein the pyrrole metallocene heterocyclic compound is chemically bonded with the carrier through an oxygen atom, and the metallocene catalyst has the structure shown in a formula a in the description, R1, R2 and R3 are respectively and independently selected from one of H, CH3- and saturated or double-bond-containing straight-chain or branched-chain C2-C10 alkyl; R4 is a straight-chain or branched-chain C1-C5 alkyl group; and M is Ti or Zr. The catalyst is relatively high in activity, can be used for homopolymerization and copolymerization reaction of olefin, and cannot fall off in the polymerization process, and the prepared catalyst is high in loading rate and good in polymerization reaction activity.

Description

technical field [0001] The invention relates to a metallocene catalyst, a preparation method of the metallocene catalyst and a method for preparing polyolefin by using the metallocene catalyst. Background technique [0002] In the 1980s, the emergence and rise of metallocene catalysts triggered another revolution in the polyolefin industry after Ziegler-Natta catalysts. This type of catalyst is a kind of single active center metal organic complex composed of transition metal or rare earth metal (especially Ti, Zr or Hf) and at least one cyclopentadienyl or its derivative ligand. The cocatalyst is mainly formazan aluminoxane (MAO) and organoboron compounds. The chemical structure of metallocene catalysts is easy to control, allowing us to tailor the properties of polymers by designing the structure of the catalyst, such as controlling the molecular weight size and distribution, comonomer content, etc. [0003] Homogeneous metallocene catalysts have the advantages of high ca...

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): C08F4/642C08F4/02C08F10/00C08F12/00C08F36/02C08F32/08C08F110/14C08F110/02C08F110/06
CPCC08F10/00C08F12/00C08F36/02C08F32/08C08F110/14C08F110/02C08F110/06C08F4/64089C08F4/025
Inventor 王文燕许胜王立娟任鹤米普科张瑞孙彬彬杨琦杨国兴和树立邵炉牛娜赵瑞达高宇新邹恩广王华宋磊
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com