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Process for the manufacture of heterophasic propylene copolymer

A kind of propylene copolymer, heterophasic technology, applied in the field of production of heterophasic propylene copolymer, can solve problems such as unreported viscosity problem

Active Publication Date: 2013-04-03
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, it is not reported how to control the stickiness problem in the production of heterophasic propylene copolymers

Method used

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  • Process for the manufacture of heterophasic propylene copolymer
  • Process for the manufacture of heterophasic propylene copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0191] Embodiment 1: the preparation of soluble Mg-complex

[0192] By mixing 55.8kg of 20% BOMAG (Mg(Bu) i，5 (October) 0，5 ) toluene solution was added to 19.4kg 2-ethylhexanol in a 150 1 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

[0193] Example 2: Catalyst with internal pore structure

[0194] 24kg of titanium tetrachloride was placed in a 90 1 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 0.063g / cm 3 ) 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.

[0195] Then 4.5 kg of n-heptane and 1.05 1 Viscoplex 1-254 of RohMax Additives GmbH (a polyalkylmethacrylate with a viscosity of 90mm at 100°C) were 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.

[0196] 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 washed...

Embodiment 3A

[0199] Example 3A: Dense Catalyst Particles - No Internal Pores

[0200] Same as Example 2, except that no SiO is added to the Mg-complex 2 nanoparticles.

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Abstract

The invention is directed to a process for the manufacture of heterophasic propylene copolymer compositions comprising the steps of forming a propylene polymer matrix in at least one slurry reactor and optionally in at least one gas phase reactor and subsequently forming in at least one gas phase reactor an elastomeric copolymer by copolymerizing propylene with ethylene and / or with another ±-olefin in the presence of said matrix, wherein the polymerization is carried out in the presence of a catalyst system comprising a catalyst in form of solid particles, said particles (a) have a surface area of less than 20 m 2 / g (b) comprise a transition metal compound of groups 4 to 10 of the periodic table or a compound of actinide or lanthanide, (c) comprise a metal compound of groups 1 to 3 of the periodic table, and (d) comprise inclusions not comprising catalytically active sites.

Description

technical field [0001] The present invention relates to a novel process for the production of heterophasic propylene copolymers and the use of a special catalyst Ziegler-Natta catalyst system in said process. Background technique [0002] Polypropylene polymers are known to have suitable heat and chemical resistance and to have good mechanical properties. Furthermore, it is known that desired properties such as stiffness and impact strength properties can be achieved by copolymerizing propylene with ethylene and / or other alpha-olefin monomers and optionally adding elastomeric copolymers to the polymer matrix. [0003] Polypropylene copolymers can therefore be used in place of, for example, poly(vinyl chloride) (PVC). Furthermore, polypropylene polymers are well suited for a wide variety of applications. [0004] However, for cases where soft and flexible materials are required, polypropylene compositions have so far not been able to successfully replace the corresponding p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F4/02C08F4/651C08F4/654C08F110/06C08F2/00
CPCC08F210/06C08F110/06C08F10/00C08F10/06C08F4/025C08F4/02C08F4/651C08F4/6555C08F4/6546C08F2/001C08F2500/18C08F2500/12C08F2500/24C08F210/16
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
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