Process for producing polyolefin and vapor-phase polymerization apparatus therefor

A technology of olefin polymerization and polyolefin, applied in chemical/physical/physical-chemical process, chemical instrument and method, chemical/physical process, etc., can solve the problems of blocking the discharge pipe of polymer particles, adhesion, etc.

Inactive Publication Date: 2006-10-18
IDEMITSU KOSAN CO LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, a large amount of lumps and agglomerates, depending on the type of polymerization vessel and polymerization conditions, may still remain in the reaction system,

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
  • Process for producing polyolefin and vapor-phase polymerization apparatus therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Embodiment 1: the production of propylene-ethylene block copolymer

[0062] (1) Production of magnesium compound (a)

[0063] A glass reactor (capacity: about 12 L) equipped with a stirrer was sufficiently purged with nitrogen, and then charged with 4860 g of ethanol, 32 g of iodine and 320 g of metallic magnesium. The contents of the reactor were heated to react with each other while stirring under reflux until no hydrogen gas was generated from the reaction system to obtain a solid reaction product. The solid reaction product thus obtained was dried under reduced pressure to obtain a magnesium compound (a) [solid product].

[0064] (2) Preparation of solid catalyst component (A)

[0065] Into a three-neck glass Erlenmeyer flask (volume: 5 L) which was sufficiently purged with nitrogen gas, 160 g of the above-mentioned unpulverized magnesium compound (a), 80 ml of purified heptane, 24 ml of silicon tetrachloride and 23 ml of diethyl phthalate were charged. ester. W...

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

Provided is a process for producing polyolefin by continuous vapor phase polymerization in the presence of an olefin polymerization catalyst, comprising the steps of: feeding a cooling circulating medium into the polymerization vessel from the bottom wall of the polymerization vessel and from at least one position on the sidewall thereof. There is also provided a polyolefin vapor phase polymerization device, comprising: a polymerization vessel equipped with a monomer feeding pipe, a polymer discharge pipe and an optional stirring blade, and a cooling circulating medium from the bottom wall of the polymerization vessel and at least from its side wall One position feeds the mechanical equipment of the polymerization vessel.

Description

technical field [0001] The present invention relates to a process for the production of polyolefins, in particular polyolefins such as propylene block copolymers, and more particularly to a process for the production of polyolefins by a vapor phase polymerization process in the presence of an olefin polymerization catalyst, the The method has no worry of polymer adhering to the wall of a polymerization vessel or a stirring blade used together with it, and can carry out polyolefin production continuously, stably and for a long time; and relates to a vapor phase polymerization device used in the process. Background technique [0002] Polyolefins such as polypropylene and propylene block copolymers have experienced a rapid increase in polymer yield per catalyst weight due to the high activity and high stereoregularity achieved by improved Ziegler-Natta catalysts, And thus its stereoregularity is also improved. As a result, the content of metal components such as transition met...

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): C08F2/34B01J8/08C08F2/01C08F4/64C08F4/6592C08F10/00
CPCB01J19/0066B01J8/087B01J2208/00274C08F10/00
Inventor 金子安延清水惠次郎大田正胜
Owner IDEMITSU KOSAN CO LTD
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