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

Load metallocene catalyst using nano material as carrier and its application

A technology of metallocene catalysts and nanomaterials, which is applied in the field of supported metallocene catalysts, can solve the problems of no significant improvement in polymer properties, high catalyst production costs, and low active and active ingredients, and achieve physical performance improvement and reduction The effect of high elution rate and load rate

Inactive Publication Date: 2002-12-04
中国石油天然气股份有限公司兰州石化分公司 +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are the following problems in the supported metallocene catalysts prepared with the above-mentioned various carriers: 1) the active ingredient of the catalyst has a higher elution rate in an organic solvent, the actual loading capacity is low, and the active active ingredient of the load is low; 2) the amount of co-catalyst is high (Taking alkylaluminoxane as an example, the aluminum / central metal atom molar ratio is 500) resulting in high catalyst production costs; 3) When used in olefin polymerization, the polymer properties have not been significantly improved

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Get 3.50g of the nano material carrier that obtains through cetyltrimethylammonium bromide treatment with montmorillonite, specific surface area is 450m 2 / g, add toluene (the toluene mentioned below is all processed with metal sodium distillation), and stirred for 2 hours at 40°C, then added toluene and MAO solution, and continued to stir for 2 hours at normal temperature; Zirconocene chloride (purchased from Aldrich Company, without purification, Zr content is 30.1%) was added to toluene to make a solution, then the main catalyst solution was transferred to the toluene dispersion of nanomaterials, stirred at 60 ° C for 4 hours, pumped Dry toluene as a solvent and wash with toluene to obtain a supported metallocene catalyst. The ratio of co-catalyst to main catalyst (aluminum-zirconium ratio) is 200. The whole process must be strictly operated under the protection of inert gas. The ratio of metal atom zirconium in the main catalyst to the total weight of the supporte...

Embodiment 2

[0017] 3.50g of hectorite is treated with ω-amino acid to make nanomaterials, and its specific surface area is 390m 2 / g, 0.70g dibutyl zirconium dichloride (made by Beijing Academy of Stone Sciences, Zr content is 17.0%), cocatalyst is MAO, and all the other are with embodiment `1. The zirconium loading on the catalyst was determined to be 2.70wt%. The aluminum-zirconium ratio is 100.

[0018] Use this catalyst to do the slurry copolymerization of ethylene and hexene-1 (hexene content is 15%, polymerization pressure 0.6Kpa, polymerization temperature is 60 ℃, polymerization time 4 hours), its activity is 3.11×10 7 g / (mol h) -1 , the polymerization activity of the catalyst supported by silica is 9.15×10 6 g / (mol h) -1 . The various physical properties of the polymer are tested as follows:

[0019] Polymer properties Mw×10 -4 Mn×10 -4 MDW melting point (°C)

[0020] Catalysts supported by nanomaterials 8.04 3.91 2.06 119

[0021] Catalyst supported on silica 6....

Embodiment 3

[0023] The catalyst of Example 2 is used for the slurry copolymerization of ethylene and octene-1 (octene content is 15%, polymerization pressure is 0.6Kpa, polymerization temperature is 60°C, polymerization time is 4 hours), and its activity is 3.19×10 7 g / (mol h) -1 , the polymerization activity of the catalyst supported by silica is 9.03×10 6 g / (mol h) -1 . The various physical properties of the polymer are tested as follows:

[0024] Polymer properties Mw×10 -4 Mn×10 -4 MDW melting point (°C)

[0025]Catalysts supported by nanomaterials 8.04 3.93 2.05 120

[0026] Catalyst supported on silica 6.93 3.03 2.29 117

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

PropertyMeasurementUnit
Specific surface areaaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a new load-type cyclopentadienyl metal catalyst and its application. The carrier uses montmorilonite, bowlingite, lithium montmorillonite, synthetic mica and sepiolite as raw materials through treatment with amine salt and amino acid to form nanometer material with specific surface area 640 sq.m. / g-100 sq.m. / g. Due to the use of nanometer material as carrier, it raises the load rate of catalyst, and reduces the quantity of cocatalyst used. The invented catalyst is suitable for the polymerization of olefin hydrocarbon.

Description

technical field [0001] The invention relates to a supported metallocene catalyst and its application, in particular to a supported metallocene catalyst with nanomaterials as a carrier and its use in olefin polymerization. Background technique [0002] The supported metallocene catalyst means that the metallocene compound and the co-catalyst are loaded on the carrier and exist in a heterogeneous system. The carriers selected mainly include: silicon dioxide (EP 704461, 1996), aluminum oxide (kaminaka M, Soga K. Polymer, 1992, 33: 1105), magnesium chloride (USP 5 106 804, 1992), Al(OH)xOy( WO 9 513 872, 1995), montmorillonite (Zhang Lei et al., Petrochemical Industry, 1998, Volume 27, P809-894), clay (International publication number: PCT099.14247 date 99.3.25; EP 683180, 1995), etc. . There are the following problems in the supported metallocene catalysts prepared with the above-mentioned various carriers: 1) the active ingredient of the catalyst has a higher elution rate in...

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): B01J31/12
Inventor 贾军纪朱博超李林青王德平冯玉涛徐晓敏韦少义魏红杨涛刘燕陈雪蓉郝萍
Owner 中国石油天然气股份有限公司兰州石化分公司
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