Check patentability & draft patents in minutes with Patsnap Eureka AI!

Olefin polymerization method

An olefin polymerization and olefin technology, applied in the field of olefin polymerization, can solve the problems of low efficiency and low catalytic activity, and achieve the effect of improving the efficiency of olefin polymerization

Active Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP +1
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to overcome the problem that the catalytic activity of the olefin polymerization catalyst in the prior art is still low, resulting in the low efficiency of the olefin polymerization reaction, and to provide a high-efficiency olefin polymerization method

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 method
  • Olefin polymerization method
  • Olefin polymerization method

Examples

Experimental program
Comparison scheme
Effect test

preparation example

[0057] Preparation of doughnut-shaped SBA-15 carrier: 2.0 grams of triblock copolymer polyoxyethylene-polyoxypropylene-polyoxyethylene (P123, the registration number of American Chemical Abstracts is 9003-11-6, and the average molecular weight Mn=5800) and 15 grams of N,N-dimethylformamide (DMF) were added to a solution of 11.2 grams of 37% hydrochloric acid and 64ml of water, stirred at 40°C until P123 was completely dissolved, and then 4.45 grams of ethyl orthosilicate was added to the The resulting solution was stirred at 40°C for 24 hours. After filtering, washing and drying, the original powder mesoporous material is obtained. The obtained raw powder mesoporous material was calcined in a muffle furnace at 600° C. for 24 hours, and the template agent was removed to obtain a donut-shaped mesoporous material SBA-15 (wherein, the ratio of the inner diameter of the donut to the outer diameter was 0.5, and the average particle diameter was 5μm, with an average thickness of 2μm...

Embodiment 1

[0073] This experimental example is used to illustrate the olefin polymerization method of the present invention.

[0074] In a 2-liter stainless steel autoclave, replace three times with nitrogen and ethylene respectively, then add 200 milliliters of hexane, raise the temperature of the kettle to 80 ° C, and then add 800 milliliters of hexane solvent, along with the addition of hexane, add 2 Milliliter of 1 mol / L triethylaluminum (TEA) hexane solution, then add 36.9 mg of SBA-15-BU, feed ethylene to raise the pressure to 1.0 MPa and maintain it at 1.0 MPa, react at 70°C for 30 minutes. Obtain 137 grams of polyethylene particle powder, the bulk density (BD) of this polyethylene particle powder is 0.238g / ml, melt index: MI 2.16 =0.021g / 10min, determined by calculation, the efficiency of the catalyst is 3713g PE / gcat h (3.7×10 8 g PE / (mol Zr h)).

Embodiment 2

[0076] This experimental example is used to illustrate the olefin polymerization method of the present invention.

[0077] In a 2-liter stainless steel autoclave, replace three times each with nitrogen and ethylene, then add 200 milliliters of hexane, raise the temperature of the kettle to 80°C, and then add the remaining 800 milliliters of hexane. With the addition of hexane, add 2 Milliliter 1 mol / liter triethylaluminum (TEA) hexane solution and 10 milliliters of hexene, then add 31.5 milligrams of SBA-15-BU, feed ethylene to raise the pressure to 1.0 MPa and maintain it at 1.0 MPa, at 70 °C React for 1 hour. 283 grams of polymer were obtained with a bulk density (BD) of 0.272 g / ml and a melt index: MI 2.16 =0.403g / 10min, determined by calculation, the efficiency of the catalyst is 8984g PE / gcat h (9.0×10 8 g PE / (mol Zr h)).

[0078] Preparation of Comparative Example

[0079] The supported catalyst was synthesized by the same method as in the preparation example, except...

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
The average particle sizeaaaaaaaaaa
Bulk densityaaaaaaaaaa
Melt indexaaaaaaaaaa
Login to View More

Abstract

The invention provides an olefin polymerization method which comprises the contact of one or more than one olefin with a supported metallocene catalyst under an olefin polymerization condition; the supported metallocene catalyst comprises a carrier, and a metallocene compound and alkylaluminoxane loaded on the carrier; the carrier is SBA-15. According to the olefin polymerization method of the invention, the supported metallocene catalyst which has a sandwich structure and is obtained by loading a metallocene with a substituent group on a cyclopentadienyl on a MAO-treated carrier SBA-15 is used as a catalyst for olefin polymerization, and thus the olefin polymerization efficiency is greatly increased.

Description

technical field [0001] The present invention relates to a method for polymerizing olefins. Background technique [0002] The development and application of metallocene catalysts is another major breakthrough in the field of olefin polymerization catalysts after the traditional Ziegler-Natta catalysts, especially in the 1980s, Kaminsky and Sinn et al. (Angew.Chem., 1980,19,390; Adv. .Organoment.Chem., 1980, 18, 99.) developed a high-efficiency cocatalyst methylaluminoxane (MAO), making the research on metallocene catalysts enter a stage of rapid development. Due to the large amount of MAO required for the homogeneous metallocene catalyst to achieve high activity, the production cost is high, and the obtained polymer has no particle shape, it cannot be used in the widely used slurry method or gas phase polymerization process, an effective solution to the above problems The way is to load the soluble metallocene catalyst. At present, there are many research reports on metallo...

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): C08F10/00C08F36/02C08F110/02C08F210/16C08F4/6592C08F4/02
Inventor 邱波谢伦嘉亢宇王洪涛王彦强郭顺郑刚刘长城
Owner CHINA PETROLEUM & CHEM CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com