Phillips catalyst reduced with organic compound and possessing short induction term

A technology of Philip catalyst and organic compound, which is applied in the field of Philip catalyst with short induction period reduced by organic compound, can solve the problems of high toxicity and high explosiveness of poison and carbon monoxide, safety and cost increase, etc.

Inactive Publication Date: 2002-12-11
BASELL POLYOLEFINE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, the disadvantages of these two methods are that a large excess of reducing agent must be used, and its reaction products, carbon dioxide and water, are catalyst poisons
In addition, the high toxicity of carbon monoxide and the high explosiveness of hydrogen lead to increased safety costs during large-scale technical polymerizations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0050] The polymerizations described in the following examples were carried out using a Phillips catalyst prepared as described in DE-A 2540279, especially as described in the examples. The catalysts were activated in air at 750°C and then reduced with the respective reducing agents (see table).

[0051] Examples 1, 2 and Comparative Example V1 Homopolymerization of 1-hexene with pre-reduced catalyst in suspension

[0052] To polymerize 1-hexene, 5 g of Phillips catalysts were respectively suspended in 100 ml of anhydrous heptane. After heating to 90° C., the respective reducing agents were added in a molar ratio of 1:1 based on the chromium content in the catalyst and stirred for 1 hour. Next, 20 ml of each 1-hexene was charged into the reactor and polymerized at 90°C. After 10 minutes, the polymerization was interrupted by adding methanol, the catalyst was isolated by filtration, the filtrate was concentrated in vacuo and the polymerization yield was determined by weighing ...

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Abstract

The present invention relates to catalyst systems suitable for the polymerization of ethylene and 1-olefins, which contain as active components: A) a chromium-containing component obtained by reduction oxidation of an organic compound with a Phillips catalyst, the Said organic compound is selected from linear C containing at least one internal C=C double bond 4 to C 10 or ring C 3 to C 10 Alkenes, 1,3-butadiene, C 2 to C 10 Alkynes and C 1 to C 10 Aldehydes, and possibly B) organometallic compounds of the first, second, third or fourth main group or second subgroup of the Periodic Table of the Elements.

Description

technical field [0001] The present invention relates to catalyst systems suitable for the polymerization of ethylene and 1-olefins, which contain as active components: A) a chromium-containing component obtained by reducing a Phillips catalyst with an organic compound, said Organic compounds selected from linear C containing at least one internal C=C double bond 4 to C 10 or ring C 3 to C 10 Alkenes, 1,3-butadiene, C 2 to C 10 Alkynes and C 1 to C 10 Aldehydes, and possibly B) organometallic compounds of the first, second, third or fourth main group or second subgroup of the Periodic Table of the Elements. [0002] The invention also relates to a process for the preparation of the catalyst system defined at the outset by loading a chromium compound on a porous inorganic solid material, oxidizing the solid material thus obtained and treating the oxidized solid material with a reducing agent, the invention also relates to a Process for the production of poly(1-alkenes) b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F4/24C08F4/69C08F4/02C08F110/02C08F110/14
CPCC08F10/00C08F110/02C08F110/14C08F2410/01C08F4/69C08F4/24C08F2500/01C08F2500/04
Inventor W·罗德
Owner BASELL POLYOLEFINE GMBH
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