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Random propylene copolymer with high comonomer content

A comonomer content and comonomer technology, applied in the field of propylene random copolymers, can solve problems such as adverse effects on catalytic activity, and achieve the effect of reducing the risk of fouling

Active Publication Date: 2011-12-28
ボレアリステクノロジーオイ
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since these antistatic agents can be adsorbed to the surface of the active catalyst, they have an adverse effect on the catalytic activity

Method used

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  • Random propylene copolymer with high comonomer content
  • Random propylene copolymer with high comonomer content
  • Random propylene copolymer with high comonomer content

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0228] Embodiment 1: the preparation of soluble Mg-complex

[0229] By mixing 55.8kg of 20% BOMAG (Mg(Bu) i，5 (October) 0，5 ) was added to 19.4kg of 2-ethylhexanol in a 150l steel reactor to prepare a magnesium complex solution. The temperature of the contents of the reactor was maintained below 20°C during the addition. The temperature of the reaction mixture was then raised to 60°C and maintained at this temperature with stirring for 30 minutes at which point the reaction was complete. Then 5.50 kg of 1,2-phthaloyl dichloride were added and the reaction mixture was stirred for a further 30 minutes at 60°C. After cooling to room temperature, a yellow solution was obtained.

Embodiment 2

[0230] Example 2: Catalyst with internal pore structure

[0231] 24 kg of titanium tetrachloride were placed in a 90 l steel reactor. 0,190 kg of SiO supplied by Nanostructured & Amorphous Inc. (NanoAmor) was then placed in two hours 2 Nanoparticles (average particle size 80nm; surface area 440m 2 / g; bulk density 0.063 g / cm) mixture and 21.0 kg Mg-complex were added to the stirred reaction mixture. During the Mg-complex addition, the reactor contents were kept below 35°C.

[0232] 4.5 kg of n-heptane and 1.05 l of Viscoplex 1-254 from RohMax Additives GmbH (a polyalkylmethacrylate with a viscosity of 90mm at 100°C) were then mixed at room temperature. 2 / s, density at 15° C. of 0.90 g / ml) was added to the reaction mixture, which was kept stirring at this temperature for 60 minutes.

[0233] The temperature of the reaction mixture was then slowly raised to 90° C. over 60 minutes and stirred at this temperature for 30 minutes. After settling and siphoning, the solid was wa...

Embodiment 3A

[0236] Example 3A: Dense Catalyst Particles - No Internal Porosity

[0237] Same as Example 2, but without addition of SiO to the Mg-complex 2 nanoparticles.

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Abstract

The invention refers to propylene random copolymers which comprises ethylene, C4-C20 alpha-olefin and comonomers in any combination, wherein the propylene random copolymer (a) comprises at least 3.5% (weight) comonomers based on the propylene random copolymers, (b) possessing at least 30% degree of randomness, and (c) is prepared in the presence of a catalyst system of solid catalyst particles, wherein the solid catalyst particles (a) have a specific surface area of less than 20 m 2 / g, (b) comprise a transition metal compound which is selected from one of the groups 4 to 10 of the periodic table or a compound of actinide or lanthanide, (c) comprise a metal compound which is selected from one of the groups 1 to 3 of the periodic table, and (d) comprise inclusions not having catalytically active sites.

Description

[0001] This application is a divisional case of the invention application with the filing date of November 26, 2008, the application number of 2008801194717, and the title of "Method for Preparing Propylene Random Copolymer". technical field [0002] The present invention relates to propylene random copolymers having low viscosity, especially not easily adhering to the inner wall of a polymerization reactor. Background technique [0003] Propylene homopolymers have high heat and chemical resistance as well as favorable mechanical properties. However, other properties of propylene copolymers such as impact strength (especially at low temperatures), flexibility, clarity or haze need to be improved for specific applications. [0004] It is known that mechanical properties such as impact strength or optical properties can be improved by copolymerizing propylene with ethylene or other alpha-olefins. Random copolymers of propylene are obtained if these comonomers are randomly dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/06C08F210/16C08F4/654C08F4/02
CPCB01J37/0203C08F210/16B01J21/08C08F110/06C08F210/06B01J37/0209C08F4/025C08F4/6546C08F2/001C08F2500/24C08F2500/12
Inventor 彼得·丹尼福帝莫·雷纳门安斯·海克纳瑞门汤瓦德·瓦斯科伯格
Owner ボレアリステクノロジーオイ