Olefin polymerization solid catalyst carrier and preparation thereof

A solid catalyst and olefin polymerization technology, applied in the field of magnesium chloride-containing carrier and preparation, can solve the problems of poor shape, low polymer bulk density, low catalyst loading titanium content, etc., achieve good fluidity and strength, and good particle shape , good catalytic activity effect

Active Publication Date: 2010-04-21
CHINA PETROLEUM & CHEM CORP +1
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shape of the catalyst particles prepared by this method is not good, and the loading of active components is limited, and the catalyst loading of titanium is low, so the polymerization efficiency per unit mass of the catalyst is not high, and the obtained polymer has a low bulk density and poor morphology.

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
  • Olefin polymerization solid catalyst carrier and preparation thereof
  • Olefin polymerization solid catalyst carrier and preparation thereof
  • Olefin polymerization solid catalyst carrier and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] The preparation method of the carrier of the present invention comprises adding magnesium powder into a hydrocarbon solvent, adding an electron donor compound after stirring evenly, and then adding C with a molar ratio of 2.0 to 8.0:1 to the magnesium powder. 2 ~C 5 The halogenated alkane fully reacts, filters, collects solid matter washing and drying, and described electron donor compound is general formula Si(OR 3 ) 4 Siloxane and Ti(OR 2 ) 4 mixture.

[0020] In the above-mentioned carrier preparation process, the magnesium powder is mainly reacted with halogenated alkanes to generate active magnesium chloride, accompanied by the generation of alkylmagnesium chloride. The halogenated hydrocarbon is preferably C 2 ~C 5 monochlorinated alkanes such as chloropropane, chlorobutane, chloroisobutane, chlorotert-butane, chloroisopentane or chloropentane. The molar ratio of the halogenated hydrocarbon to the magnesium powder is preferably 2.5-5.0:1. The halogenated al...

example 1

[0032] Preparation of vectors described in the present invention.

[0033] Add 0.2mol magnesium powder, 150ml hexane, 6mmol n-butyl titanate, 36mmol tetraethyl orthosilicate and 0.02g iodine successively into a 250mL flask, heat to 75°C and stir for activation for 2 hours, then add dropwise 1mol of dry n-chloro Butane, obvious reaction can be observed, continue to react for 3 hours, filter, the gained solid is dried after washing with hexane, obtains active carrier a, and its composition formula is as follows:

[0034] (MgCl 2 )(BuMgCl) 0.58 Mg 0.08 [Ti(OC 4 h 9 ) 4 )] 0.07 [Si(OC 2 h 5 ) 4 ] 0.23

[0035] The infrared spectrogram of active carrier a is shown in figure 1 , a 400X magnified scanning electron microscope image is shown in figure 2 .

[0036] Depend on figure 1 It can be seen that the wave number is 1083.8cm -1 and 1047.2cm -1 There are two peaks with equal intensity at , which belong to Si-OC 2 h 5 Antisymmetric stretching vibration absorption...

example 2

[0041] The carrier was prepared according to the method of Example 1, except that the addition of n-butyl titanate was 3 mmol, and the addition of tetraethyl orthosilicate was 18 mmol. After drying, active carrier b was obtained, and its composition formula was as follows:

[0042] (MgCl 2 )(BuMgCl) 0.58 Mg 0.04 [Ti(OC 4 h 9 ) 4 ] 0.04 [Si(OC 2 h 5 ) 4 ] 0.12

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

An olefin polymerization solid catalyst vector has the following general expression formula: (MgCl2)(R1MgCl)pMgq[Ti(OR<2>)<4>]x [Si(OR3)4]y; in the formula, R1 and R2 are respectivley selected from alkyls with carbon atoms ranging from C2 to C4 and R3 is selected from the alkyl with carbon atoms ranging from C1; p value ranges from 0.4 to 0.8, q value ranges from 0.02 to 0.15, x value ranges from0.03 to 0.09 and y value ranges from 0.1 to 0.3. The solid catalysts obtained through the supported metallocene or non-metallocene after the vector is activated by alcohols and treated by the alkylaluminium are used for the olefin polymerization with higher catalytic activity and the prepared polymer particles have better morphology and higher bulk density.

Description

technical field [0001] The invention relates to an olefin polymerization solid catalyst carrier and a preparation method, in particular to a magnesium chloride-containing carrier and a preparation method. Background technique [0002] Supported high-efficiency polyolefin catalysts are mostly made of solid inorganic substances as supports and supported transition metal compounds, especially metallocene and non-metallocene catalysts usually need to be supported in the application. Loading is to meet the needs of more polymerization processes, such as gas phase polymerization and slurry polymerization, to improve the catalytic efficiency of active components, to increase the stability of active centers, to improve the morphology of polymers, and to improve the appearance of polymers. density and reduce the amount of co-catalyst. Therefore, the nature of the support is crucial to the performance of the supported catalyst. [0003] The more commonly used and effective supported...

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 Patents(China)
IPC IPC(8): C08F10/00C08F4/02C08F4/645
Inventor 宗明生许学翔纪洪波时晓岚
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