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

Olefin polymerization catalyst and preparation method and application thereof

An olefin polymerization and catalyst technology, applied in the field of olefin polymerization, can solve the problems of low catalyst activity and easy adhesion to the container wall, etc., and achieve the effects of high catalyst activity, good hydrogen regulation performance and good particle shape

Inactive Publication Date: 2019-05-21
PETROCHINA CO LTD
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalyst activity is low, and the main catalyst particles are easy to adhere to the container wall

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 catalyst and preparation method and application thereof
  • Olefin polymerization catalyst and preparation method and application thereof
  • Olefin polymerization catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0033] According to a typical embodiment of the present invention, the hydrocarbyl siloxy phosphite compound is selected from the general formula (3) as P(OSiR 3 2 ) 3-n (OH) n At least one of, wherein n is selected from 0, 1, 2 or 3; wherein R 2 from C 1 ~C 20 aliphatic hydrocarbon group, C 1 ~C 20 Alkoxyl, C 3 ~C 20 alicyclic or C 6 ~C 20 aromatic hydrocarbon group. The hydrocarbyl siloxy phosphite compound is specifically selected from at least one of the following compounds:

[0034]

[0035]

[0036] The molar ratio of the hydrocarbyl siloxy phosphite compound to the magnesium oxide carrier is (0.001-10):1. The addition of hydrocarbyl siloxy phosphite compound can obviously improve the catalytic activity, hydrogen adjustment sensitivity and copolymerization ability of the catalyst.

[0037] One of the features of the present invention is that an alcohol with 2 to 15 carbon atoms is added in the preparation process of the solid main catalyst, wherein the...

Embodiment 1

[0062] In the reactor fully replaced by nitrogen, add 1 g of diethoxymagnesium, 20 ml of n-decane, 0.2 ml of ethanol, and 6.5 ml of iso-octanol, stir and heat up to 120° C., and react for 2 hours. The temperature was lowered to 50°C, and 2.5 g of the hydrocarbylsilyloxyphosphite compound (1) conforming to the general formula (3) was sequentially added, and the temperature was kept at 50°C for 2 hours. Lower the system to -15°C, add 30ml of titanium tetrachloride dropwise, react for 1h, then raise the temperature to 110°C for another 2h. Stop stirring, let stand, separate layers, filter, wash with hexane four times (30 ml each time); at 0°C, stir, add triethylaluminum 3ml (2M) and n-hexane 80ml, react for 10min; fill with ethylene ( 0.02MPa), and react at 0°C for 1min. Stop stirring, let stand, separate layers, filter, wash with hexane four times (30 milliliters each), and dry in vacuum at 70° C. for 2 hours to obtain a spherical powdery solid procatalyst with good fluidity an...

Embodiment 2

[0065] In the reactor fully replaced by nitrogen, add 1g of magnesium dichloride, 30ml of n-decane, 0.25ml of ethanol, and 7ml of iso-octanol, stir and heat up to 120°C, and react for 2h. The temperature was lowered to 60°C, and 1.5 g of the hydrocarbylsilyloxyphosphite compound (2) conforming to the general formula (3) was sequentially added, and the temperature was kept at 60°C for 2 hours. Lower the system to -10°C, add 40ml of titanium tetrachloride dropwise, react for 1 hour, then raise the temperature to 100°C for another 3 hours. Stop stirring, let stand, separate layers, filter, wash with hexane four times (30 ml each time), stir at -10°C, add 1 ml of triethylaluminum (2M) and 70 ml of n-hexane, react for 8 min; fill with ethylene (0.01MPa), and react at -10°C for 0.5min. Stop stirring, leave standstill, separate layers, filter, wash 5 times with hexane (30 milliliters each time), dry in vacuum at 60 ℃ for 3 hours, obtain good fluidity, uniform particle size distribut...

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
melt flow indexaaaaaaaaaa
Login to View More

Abstract

The invention discloses olefin polymerization catalyst and a preparation method and application thereof. The olefin polymerization catalyst is composed of a main catalyst and a catalyst promoter; themain catalyst is composed of a magneside carrier, a transition metal halide, alcohol with carbon atom number of 2-15, and electron donor hydrocarbyl siloxy phosphite compound; the mole ratio of the magneside carrier, the transition metal halide, the alcohol with carbon atom number of 2-15 to the electron donor hydrocarbyl siloxy phosphite compound is 1: (1-40): (0.01-10): (0.01-10); the catalyst promoter is organic aluminum compound; a dosage relation of the main catalyst and the catalyst promoter is that the mole ratio of the transition metal halide in the main catalyst to the catalyst promoter is 1: (10-500). The olefin polymerization catalyst is high in catalyst activity and good in hydrogen regulation performance.

Description

technical field [0001] The invention relates to the field of olefin polymerization, in particular to an olefin polymerization catalyst and its preparation method and application. Background technique [0002] Olefin polymerization catalysts are the core of polyolefin polymerization technology. From the perspective of the development of olefin polymerization catalysts, there are two main aspects: (1) the development of polyolefin resin catalysts that can prepare special or better performance, such as metallocene catalysts (2) For the production of general-purpose polyolefin resins, on the basis of further improving catalyst performance, simplify the catalyst preparation process, reduce catalyst costs, and develop environmentally friendly technologies to improve efficiency ,Increase competitiveness. Before the 1980s, the focus of polyethylene catalyst research was on the pursuit of catalyst efficiency. After nearly 30 years of hard work, the catalytic efficiency of polyethyle...

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 Applications(China)
IPC IPC(8): C08F10/00C08F110/02C08F210/16C08F210/14C08F110/06C08F4/646C08F4/649
Inventor 张利粉黄启谷刘冬张元礼王健王静江张利仁焦金华徐丽艳王永年黄荣福郭洪元崔月王大明刘志军王俊荣孙辉宇
Owner PETROCHINA CO LTD
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