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Catalyst component for olefin polymerization and its catalyst

A technology of olefin polymerization and catalyst, which is applied in the field of catalyst components and catalysts, and can solve the problem of low catalyst activity

Active Publication Date: 2013-06-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In USP5122492, magnesium chloride and silica gel (or alumina) are used as a composite carrier, and magnesium is loaded on silica gel (or alumina) to obtain a composite carrier, and then reacted with titanium tetrachloride to obtain a catalyst for propylene polymerization. , the activity of the catalyst is low

Method used

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  • Catalyst component for olefin polymerization and its catalyst
  • Catalyst component for olefin polymerization and its catalyst
  • Catalyst component for olefin polymerization and its catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 1. Catalyst synthesis: In a 300ML double-layer glass reaction bottle, add 5.0 grams of anhydrous MgCl in sequence 2 , 120ml of toluene, 8.0ml of epichlorohydrin, 10.0ml of tributyl phosphate, after completely dissolving at 60°C, cool the solution to -25°C, add 50ml of titanium tetrachloride dropwise, and maintain at -25°C for half an hour , add 3.0 g of silica gel (Davison XP02485, dry at 600°C for 4 hours before use), add 2,2,3-butanetricarboxylic acid, 3-(1-methylethyl)-,1, 5 mmol of 2,4-triethyl ester, then slowly heated up to 90°C, filtered off the liquid, washed twice with titanium tetrachloride, washed four times with hexane, and vacuum-dried to obtain a solid component of the spherical catalyst.

[0051] 2. Polymerization of propylene: in a 5L autoclave, introduce 5ml of a hexane solution of triethylaluminum (concentration of triethylaluminum is 0.5mmol / ml), 1.25ml of cyclohexylmethyl dimethyl in a nitrogen stream at room temperature A hexane solution of oxysila...

Embodiment 2

[0053] 1. Catalyst synthesis: In a 300ML double-layer glass reaction bottle, add 5.0 grams of anhydrous MgCl in sequence 2 , 120ml toluene, 8.0ml epichlorohydrin, 10.0ml tributyl phosphate, after completely dissolving at 60°C, cool the solution to -25°C, add dropwise 50ml of titanium tetrachloride, and maintain at -25°C for half an hour , add 3.0 g of silica gel (Davison XP02485, dry at 600°C for 4 hours before use), add 2,2,3-butanetricarboxylic acid, 3-(1-methylethyl)-,1, 2,4-triethyl ester and 9,9-bis(methoxymethyl)fluorene are 5mmol in total, the molar ratio of the two compounds is 1:1, then the temperature is slowly raised to 90°C, and the liquid is filtered off, and tetrachloride is used to Titanium was washed twice, washed with hexane four times, and vacuum-dried to obtain a spherical catalyst solid component.

[0054] 2. Propylene polymerization: In a 5L high-pressure reactor, introduce 5ml of triethylaluminum in hexane solution (the concentration of triethylaluminum ...

Embodiment 3

[0056] The preparation of catalyst is with embodiment 2

[0057] In a 5L autoclave, 5ml of a hexane solution of triethylaluminum (the concentration of triethylaluminum is 0.5mmol / ml), 1.25ml of cyclohexylmethyldimethoxysilane (CHMMS ) in hexane solution (the concentration of CHMMS is 0.1 mmol / ml), 10 ml of anhydrous hexane and 10 mg of the solid catalyst component obtained above. Close the autoclave, introduce 5 L of hydrogen gas (standard volume) and 2.3 L of liquid propylene, raise the temperature to 70° C., and polymerize for 1 hour. The test results are shown in Table 1.

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Abstract

The invention relates to a catalyst component for olefin polymerization and its catalyst, and an application of the catalyst in olefin homopolymerization and copolymerization, particularly relates to a solid catalyst comprising a magnesium halide / silica gel composite carrier and an ingredient containing a 2,2,3-tributyl carboxylate compound and titanium compound, and an application of the catalyst in olefin polymerization, especially in propylene polymerization. The catalyst has excellent performances, and the obtained polymer has wide molecular weight distribution. In the prior art efore theinvention, the 2,2,3-tributyl carboxylate compound has never been used as an internal electron donor in the catalyst for olefin polymerization.

Description

technical field [0001] The present invention relates to a catalyst component and catalyst for olefin polymerization, and its application in olefin homopolymerization and copolymerization. technical background [0002] It is well known in the industry that electron donors, especially internal electron donors, have a significant impact on the activity of the catalyst and the isotacticity of the polymerization product. The renewal of the internal electron donor directly leads to the renewal of the catalyst system. Different internal electron donors have different effects on the performance of the catalyst system due to their different chemical composition and structure. Thus, a new type of catalyst can be obtained using a new type of electron donor. [0003] In USP5122492, magnesium chloride and silica gel (or alumina) are used as a composite carrier, and magnesium is loaded on silica gel (or alumina) to obtain a composite carrier, and then reacted with titanium tetrachloride...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F4/649C08F10/06
Inventor 凌永泰田宇冯再兴谢伦嘉胡青郑刚
Owner CHINA PETROLEUM & CHEM CORP
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