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Preactivated catalyst component for the polymerization of olefins

A catalyst, solid catalyst technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, catalytic reactions, etc., can solve problems such as increased risk

Active Publication Date: 2018-09-28
BASELL POLYOLEFINE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In addition to the total amount of gas released, it is also worth noting that as the rate of gas generation increases, so does the risk

Method used

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  • Preactivated catalyst component for the polymerization of olefins
  • Preactivated catalyst component for the polymerization of olefins

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Preparation of solid catalyst components

[0065] All catalyst preparation steps were performed under an inert gas atmosphere, as these catalysts are very sensitive to air and moisture.

[0066] The catalyst components were prepared according to the procedure disclosed in Example 2 of EP1507805. The dried catalyst sample was resuspended in diesel oil (hydrogenated petroleum fraction with a boiling range of 140-170°C) and the stirred slurry was treated with 1-butyl chloride at 75°C at a ratio of 0.002 mol per gram of solid catalyst 2 hours. The resulting 1-butyl chloride treated catalyst sample was filtered off and dried by nitrogen purge.

[0067] The catalyst thus obtained was subjected to the water test described in the characterization section. The results are reported in Table 1.

[0068] Ethylene Polymerization in Suspension:

[0069] Polymerization experiment at 1500cm 3 batchwise in the reactor. The reactor was equipped with an impeller stirrer. The tempe...

Embodiment 2

[0073] Embodiment 2 (comparative example)

[0074] Example 1 was repeated, omitting the step of reacting with 1-butyl chloride.

[0075] According to Example 1, the water reaction test and ethylene polymerization process of the catalyst were carried out. The results are shown in Table 1.

Embodiment 3

[0077] Example 1 was repeated using dry hydrogen chloride gas as the treating agent to wash slowly through the catalyst slurry, applying a temperature of 50°C.

[0078] According to Example 1, the water reaction test and ethylene polymerization process of the catalyst were carried out. The results are shown in Table 1.

[0079] Table 1

[0080]

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Abstract

A process for the manufacture of pre-activated or pre-polymerized catalysts for the polymerization of olefins is disclosed. In particular, the present disclosure relates to a process for the preparation of pre-activated or pre-polymerized catalysts comprising a solid catalyst component comprising Ti, Mg, halogen said pre-activated catalyst having reduced release of flammable gases in contact withwater.

Description

technical field [0001] The present disclosure relates to methods of making preactivated or prepolymerized catalysts for olefin polymerization. In particular, the present disclosure relates to a process for the preparation of a pre-activated or pre-polymerized catalyst comprising a solid catalyst component comprising Ti, Mg, halogens, which reduces the release of easily gas. Background technique [0002] The vast majority of polyolefin production is based on Ziegler and Ziegler-Natta catalysts. [0003] The catalyst is obtained by reacting a transition metal compound with an activator (also called a cocatalyst) composed of an organoaluminum compound. [0004] The polymerization activity of such catalysts has been improved by the use of solid catalyst components in which transition metal compounds (usually titanium halides) are supported on magnesium dihalides by various techniques. In the case of stereospecific polymerization of alpha-olefins, it has been found that the us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/02C08F4/655
CPCC08F110/02C08F10/02C08F4/6555C08F4/651C08F2500/12B01J31/143B01J2231/12B01J2531/22B01J2531/31B01J2531/46C08F4/65912C08F4/65916
Inventor M·施耐德
Owner BASELL POLYOLEFINE GMBH