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Ziegler-Natta catalyst systems and polymers formed therefrom

A compound and catalyst technology, applied in the field of forming Ziegler-Natta type catalyst compositions, can solve problems such as high production costs

Active Publication Date: 2015-08-19
FINA TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, such blends are typically specialty chemicals with high production costs

Method used

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  • Ziegler-Natta catalyst systems and polymers formed therefrom
  • Ziegler-Natta catalyst systems and polymers formed therefrom
  • Ziegler-Natta catalyst systems and polymers formed therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0117] In the following example, Al(O-2-ethylhexyl) was prepared in situ by the reaction of triethylaluminum (TEAl) and 2-ethylhexanol 3 . The catalyst was prepared in a 500 ml reactor equipped with four Morten's indentions and a dropping funnel, three-blade stirrer and baffles.

[0118] Table 1 below illustrates the catalyst synthesis conditions. Catalysts 1, 2 and 3 use Ti(OBu) 4 (TNBT), while catalysts 4 and 5 were prepared with Ti(O-2-ethylhexyl) 4 preparation.

[0119] Table 1

[0120]

[0121] The volume average particle size of the catalyst formed is shown in figure 1 and 2 . As shown, the relative amount of TNBT appears to affect the morphology of the catalyst. It can be observed that the volume average particle size distribution is very broad and bimodal. However, under the conditions employed for precipitation, the alkoxy Ti-type reagents appear to have the greatest effect on the volume average particle size distribution. The use of titanium 2-ethylhexylox...

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Abstract

Processes of forming catalyst systems, catalyst systems and polymers formed therefrom are described herein. The processes generally include providing a first compound including a magnesium dialkoxide, contacting the first compound with a second compound to form a solution of reaction product "A", wherein the second compound is generally represented by the formula: Ti(OR1)4; wherein R1 is selected from C1 to C10 linear to branched alkyls, contacting the solution of reaction product "A" with a first metal halide to form a solid reaction product "B", contacting solid reaction product "B" with a second metal halide to form reaction product "C" and contacting reaction product "C" with reducing agent to form a catalyst component.

Description

technical field [0001] Embodiments of the invention generally relate to methods of forming Ziegler-Natta type catalyst compositions. Background technique [0002] Many methods of forming Ziegler-Natta catalyst systems utilize blends of various components. Unfortunately, such blends are typically specialty chemicals with high production costs. [0003] Accordingly, there is a need to develop methods for forming Ziegler-Natta catalysts that not only produce polymers with similar properties to polymers produced with catalysts formed from blends, but that also reduce the cost of production. Contents of the invention [0004] Embodiments of the invention include methods of forming catalyst systems. The method generally comprises providing a first compound comprising dialkoxymagnesium; contacting the first compound with a second compound to form a solution of reaction product "A", wherein the second compound is generally represented by the general formula: [0005] Ti(OR 1 )...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/10
CPCC08F110/02C08F10/00C08F4/6548C08F4/6555C08F2500/07C08F2500/26B01J21/00B01J21/10B01J31/12B01J37/04C08F10/02
Inventor K·维齐尼D·克内佩尔L·张
Owner FINA TECH INC