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

Mono-metallocene complex and application thereof, and ethylene polymerization method

A single metallocene and complex technology, applied in the field of olefin polymerization, can solve the problems of inability to catalyze the polymerization reaction, poor temperature resistance of the catalyst, inability to catalyze the copolymerization reaction of ethylene and α-olefin, etc. It is difficult to achieve molecular weight and avoid molecular weight reduction , to avoid the effect of thermal decomposition

Active Publication Date: 2020-07-28
WANHUA CHEM GRP CO LTD
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Chinese patent CN101029096A discloses a new type of monometallocene chromium catalyst, which can efficiently catalyze the polymerization of ethylene with only a small amount of alkylaluminum activation. However, this type of catalyst can only catalyze the homopolymerization of ethylene and cannot catalyze other types of Polymerization of olefins, nor can it catalyze the copolymerization of ethylene and α-olefins
Chinese patent CN 106046212A discloses a non-bridged amphoteric ionic metallocene complex, which can be used to catalyze the homopolymerization of ethylene or the copolymerization of ethylene and bornene, but the temperature resistance of the catalyst is not good, and the catalytic polymerization temperature does not exceed 80°C

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
  • Mono-metallocene complex and application thereof, and ethylene polymerization method
  • Mono-metallocene complex and application thereof, and ethylene polymerization method
  • Mono-metallocene complex and application thereof, and ethylene polymerization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The synthesis of embodiment 1 complex

[0064]

[0065] Among them, the structure of the ligand H1L1-H1L5 is as follows:

[0066] H1L1:R 1 = H, R 3 =R 4 =R 5 =R 6 = Me;

[0067] H1L2:R 1 = Me,R 3 =R 4 =R 5 =R 6 = Me;

[0068] H1L3:R 1 =iPr, R 3 =R 4 =R 5 =R 6 = Me;

[0069] H1L4:R 1 = Me,R 3 , R 4 Linked to form phenyl, R 5 =R 6 =H, i.e. Mao ring=In;

[0070] H1L5:R 1 = Me,R 3 , R 4 Linked to form phenyl, R 5 , R 6 Linked to form a phenyl group, i.e. the cyclocene=Flu;

[0071] The synthesis process of ligands H1L1-H1L5 is as follows:

[0072]

[0073] Compound (A) bis(pentafluorophenyl) borate was synthesized with reference to Chem.Commun., 2018, 54, 7243-7246:

[0074] 3.62g of (C 6 f 5 ) 2 BOH (10mmol, purchased from Alfa Aesar company) was dissolved in 100mL of dry dichloromethane, and 10g of activated Molecular sieves, and 11 mmol of cyclopentanol was added thereto, the mixture was stirred at room temperature for 4 h, the mole...

Embodiment 2

[0146] Embodiment 2Ethylene homopolymerization

[0147] The polymerization reaction is carried out in a 250mL stainless steel autoclave. Heat the polymerization autoclave equipped with mechanical agitation to 120°C, vacuum the air for 1 hour, adjust the system to the temperature required for polymerization, fill in 0.1MPa ethylene gas, and pour into the polymerization autoclave. Add 60mL of dry and purified toluene solution containing co-catalyst to it, keep it warm for a period of time until the temperature is constant, feed 0.5MPa ethylene gas, then add the main catalyst, and stir for a period of time. After the end of the polymerization reaction, release the residual ethylene gas, open the reactor, pour the obtained polymerization reaction mixture into the mixed solution of 3M hydrochloric acid and ethanol with a volume ratio of 1:1, stir for 5 minutes, filter, and dry the polyethylene product in a vacuum oven , Weigh its quality, measure its molecular weight and melting po...

Embodiment 3

[0153] Embodiment 3 Ethylene and α-olefin (1-hexene and 1-octene) copolymerization

[0154]The polymerization reaction is carried out in a 250mL stainless steel autoclave. Heat the polymerization autoclave equipped with mechanical stirring to 120 ° C, vacuumize for 1 hour, fill in 0.1 MPa ethylene gas, adjust the system to the required temperature conditions for polymerization, and pour into the polymerization autoclave Add 60mL of toluene mixed solution containing a certain amount of alkylaluminum and a certain concentration of α-olefin (1-hexene or 1-octene), keep it warm for a period of time until the temperature is constant, feed 0.5MPa ethylene gas, and then add the main catalyst, Stir for a while. Let off residual ethylene gas after the end of the polymerization reaction, open the reaction kettle, pour the obtained polymerization reaction mixture into a mixed solution of 3M hydrochloric acid and ethanol with a volume ratio of 1:1, filter after stirring for 5 minutes, dry...

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 provides a mono-metallocene complex with a structure shown as a formula (I) or a formula (II), and also provides application of the mono-metallocene complex as an ethylene polymerizationcatalyst, and an ethylene polymerization method. The mono-metallocene complex and the ethylene polymerization method provided by the invention can significantly improve the catalytic activity and theservice life of the catalyst, are suitable for a variety of polymerization processes, can improve the production efficiency and product quality of ethylene polymers, and have large-scale industrial application prospects.

Description

technical field [0001] The invention relates to the field of olefin polymerization, in particular to a monometallocene complex and its use as an ethylene polymerization catalyst, and also to an ethylene polymerization method. Background technique [0002] Polyolefin products have become one of the most widely used synthetic resin materials in life and production because of their abundant raw materials, low price, easy production and processing, and superior performance. The development level of the polyolefin industry directly represents the development level of a country's petrochemical industry, and is an important part of the national economy and national defense strategy. [0003] Polyolefin products are usually prepared by polymerization of olefin monomers in the presence of catalysts, and the catalysts used for olefin polymerization directly determine the internal structure and morphology of polyolefin products. The core technology, its development generally goes thro...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C07F17/00C08F110/02C08F210/16C08F4/69C08F4/685C08F4/6592
CPCC07F17/00C08F110/02C08F210/16C08F4/69C08F4/685C08F4/6592C08F210/14
Inventor 张彦雨张田财郭华刘万弼林小杰王金强陈海波
Owner WANHUA CHEM GRP 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