Unlock instant, AI-driven research and patent intelligence for your innovation.

Catalyst carrier used for olefin polymerization and preparation method thereof

A catalyst carrier and olefin polymerization technology, applied in the field of catalyst carriers, can solve the problems of poor catalyst efficiency and orientation ability, complicated catalyst preparation process, etc., and achieve the effects of excellent comprehensive performance, good hydrogen regulation sensitivity, and high catalytic activity.

Active Publication Date: 2015-04-15
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Subsequently, another patent of the company, US4399054, announced the use of magnesium chloride alcoholate melt in the dispersion medium for high-pressure ejection or high-speed stirring and dispersion, and then formed in a cold bath to obtain a spherical carrier, and then obtained a spherical catalyst with this carrier, but the efficiency of the catalyst and poor orientation
UCC patent US4293673 discloses a catalyst prepared by using a composite carrier of silica gel and magnesium chloride. The catalyst has high activity when used in a gas-phase polymerization process, and the prepared ethylene polymer has a good particle shape. However, most of these catalysts The preparation process is relatively cumbersome

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

[0034] Take 30ml of hexane, 3.15ml of dibutylmagnesium hexane solution (1M) and 1.0ml of isooctyl alcohol in turn, raise the temperature to 50°C and keep stirring for half an hour to obtain a transparent solution, then add polybutadiene block polyethylene oxide Alkanes copolymer (polybutadiene content 75wt%) hexane solution (10g / L) 3ml, cool down to 0°C, add 0.6ml of phosphorus trichloride, naturally slowly heat up, after rising to room temperature, heat to maintain 50°C for reaction 3 hours. The temperature of the suspension is lowered to room temperature, left to stand, settled, washed three times with hexane, each time the amount of hexane is 50 milliliters, after the washing is completed, it is dried to obtain off-white solid fluidity powder, its particle shape is good, and its average particle diameter is 5.7 microns.

[0035] Elemental analysis: Mg: 20.13% by weight, Cl: 30.92% by weight.

Embodiment 2

[0037] Under the protection of nitrogen, add 4.17 g of the spherical carrier particles obtained in Example 1 into a 250 ml glass reactor, add 50 ml of n-hexane, stir to form a slurry, cool down to 0°C with a low-temperature bath, and slowly add 20.0 ml of four The hexane solution of titanium chloride (containing 2.0 ml of titanium tetrachloride) was stirred and reacted for 1 hour, and then the temperature was slowly raised to 50° C. and kept stirring for 2 hours. After the reaction was finished, let it stand, filter out the liquid, wash the filter cake twice with 40 milliliters of hexane, and dry the solid with nitrogen to obtain 3.86 grams of magnesium chloride supported catalyst with good fluidity, and its average particle diameter is 6.1 microns .

[0038] Elemental analysis (ICP): Ti: 1.36.% by weight, Mg: 19.37% by weight.

[0039] The evaluation conditions for the ethylene slurry polymerization of the catalyst are as follows:

[0040] Ethylene polymerization evaluation...

Embodiment 3

[0043] The method for preparing the carrier is basically the same as in Example 1, but "0.6 milliliters of phosphorus trichloride" is changed to "0.6 milliliters of phosphorus oxychloride". The average particle diameter of the obtained carrier was 22.5 micrometers.

[0044] Elemental analysis: Mg: 24.64% by weight, Cl: 29.17% by weight.

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
boiling pointaaaaaaaaaa
Login to View More

Abstract

The invention provides a catalyst carrier used for olefin polymerization. The catalyst carrier used for the olefin polymerization comprises at least one organo-magnesium compound, at least one compound containing hydroxyl, at least one organic phosphorus compound containing chlorine, and least one reaction product formed by a modified precipitation agent, wherein the modified precipitation agent is a copolymer of polybutadiene block polyethylene oxide (PB-b-POE). Correspondingly, the invention further provides a preparation method of the catalyst carrier used for the olefin polymerization. The catalyst carrier prepared with the method has the advantages of being good in particle morphology and distribution, and capable of being used on polymerization process devices such as a gaseous phase polymerization process device and a slurry polymerization process device.

Description

technical field [0001] The invention relates to a catalyst carrier for homopolymerization or copolymerization of olefins, a preparation method and application of the catalyst carrier. Background technique [0002] Since the successful development of high-efficiency polyolefin catalysts in the 1970s, the world polyolefin industry has undergone tremendous changes. Over the past 20 years, with the development of olefin polymerization process, the catalysts matching the polymerization process have also made great progress. Among them, high-efficiency catalysts still occupy an important role in the field of polyolefin catalysts due to their excellent polymerization performance and mature application technology. status. After years of exploration and research, the preparation method of Mg-Ti high-efficiency catalysts has also developed from the co-grinding method, the suspension impregnation method to the preformed carrier and then the chemical reaction method. [0003] There ar...

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): C08F10/00C08F4/02
Inventor 王世波周俊领刘东兵吕新平张磊毛炳权周歆邢宝泉张长礼
Owner CHINA PETROLEUM & CHEM CORP