Supported metallocene catalyst and preparation method and application thereof

A technology of metallocene catalyst and metallocene compound, which is applied in the field of supported metallocene catalyst and its preparation and application, and can solve the problems of low catalytic activity, low polymerization temperature, easy polymer sticking and energy consumption, etc.

Active Publication Date: 2013-03-06
CHINA PETROLEUM & CHEM CORP +1
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The object of the present invention is to overcome the problem that the catalytic activity of the supported metallocene catalyst in the prior art is low, and the polymer obtained when it is used for olefin polymerization is easy to stick to...

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
  • Supported metallocene catalyst and preparation method and application thereof
  • Supported metallocene catalyst and preparation method and application thereof
  • Supported metallocene catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0055] The present invention also provides a method for preparing the above-mentioned supported metallocene catalyst, the preparation method comprising: under the protection of an inert gas, ball milling anhydrous magnesium chloride and alkylaluminoxane at a temperature of 15-100°C for 0.1- 100 hours, then under the protection of an inert gas, the carrier is first contacted with the first solution to obtain the carrier after the first contact, and the first solution contains the product obtained by ball milling and the first solvent; remove the first contact after the first solution The first solvent on the carrier; the second contact is carried out between the carrier removed from the first solvent and the second solution to obtain the second contacted carrier, the second solution contains the metallocene compound and the second solvent, wherein, The carrier is rod-shaped macroporous mesoporous silica, the length of the rod-shaped macroporous mesoporous silica is 2-20 microns,...

Embodiment 1

[0093] This example is used to illustrate the supported metallocene catalyst and its preparation method according to the present invention.

[0094] 4.0 grams of triblock copolymer polyethylene oxide-polyoxypropylene-polyoxyethylene (Aldrich company, P123) was added to a solution (pH=4.4) of 16.4 ml of hydrochloric acid and 128 ml of water at a concentration of 37% by weight, at 40 Stir at ℃ until the polyoxyethylene-polyoxypropylene-polyoxyethylene is completely dissolved, then add 8.86g of tetraethyl orthosilicate to the above solution, stir at 40℃ for 24 hours, then transfer the solution to polytetrafluoroethylene In a lined reactor, crystallize in an oven at 150°C for 24 hours, then filter, wash with distilled water, and dry to obtain the raw macroporous mesoporous silica powder.

[0095] The raw macroporous mesoporous silica powder obtained in the previous step was calcined in a muffle furnace at a temperature of 600° C. for 24 hours to remove the template agent to obtain...

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
Lengthaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Most probable apertureaaaaaaaaaa
Login to view more

Abstract

The invention provides a supported metallocene catalyst which comprises a carrier, and an alkylaluminoxane/magnesium chloride complex and a metallocene compound which are supported on the carrier; the carrier is rodlike macroporous mesoporous silica which has a length of 2-20 microns, an aspect ratio of 2-8:1, a specific surface area of 320-380 square meter/g, and a pore volume of 0.5-1.5 ml/g. The metallocene compound has a structure as shown in formula 1. When the supported metallocene catalyst of the invention is used for catalyzing olefin polymerization, the catalytic efficiency for homopolymerization at 70 DEG C is up to 2.7*10<8> gPE/(mol Zr.h), and the catalytic efficiency for copolymerization at 70 DEG C is up to 4.2*10<8> gPE/(mol Zr.h); the supported metallocene catalyst overcomes the defect of kettle adhesion, has a low polymerization temperature, and thus reduces the energy consumption to some extent. Formula 1 is as follows.

Description

technical field [0001] The invention relates to a supported metallocene catalyst and its preparation method and application. Background technique [0002] Olefin polymerization catalysts are the core of the development of polyolefin technology, and the carrier is a very critical factor in the innovation of catalysts. The carrier not only plays the role of supporting and dispersing the active center, but also may act as a special ligand and active center, thereby improving the activity and selectivity of the catalyst. At present, most olefin polymerization processes (such as gas phase polymerization, slurry polymerization, etc.) need to use supported catalysts to improve the activity of the catalysts. Meet the process requirements, avoid the phenomenon of polymer sticking to the kettle, and improve the shape of the polymer. [0003] Among the various supports used in supported olefin polymerization catalysts, MgCl 2 Carrier is the most widely used and most effective carrie...

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): C08F4/6592C08F4/02C08F10/02
Inventor 亢宇张明森王洪涛黄文氢郭顺刘长城邱波姜健准
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap