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Titanium-containing solid catalyst component and catalyst for polymerization of olefin

A solid catalyst, a technology for olefin polymerization, applied in the field of titanium-containing solid catalyst components and catalysts for olefin polymerization, and can solve the problems of low catalyst activity and the like

Active Publication Date: 2013-02-27
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, which first loads magnesium on silica gel (or alumina) to obtain a composite carrier, then reacts with titanium tetrachloride, and the catalyst obtained is used for propylene Polymerization, the activity of the catalyst is low

Method used

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  • Titanium-containing solid catalyst component and catalyst for polymerization of olefin

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Experimental program
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Effect test

Embodiment 1

[0045] 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 5 mmol of 2,3-diisopropylsuccinic anhydride during the heating process, then slowly heat up to 90 °C and filter off the liquid, use Titanium tetrachloride was washed twice, washed four times with hexane, and vacuum-dried to obtain a spherical catalyst solid component.

[0046] 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 oxysilane (CHMMS) (the...

Embodiment 2

[0048] The preparation of catalyst is with embodiment 1

[0049] 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.

Embodiment 3

[0051] 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 2,3-diisopropylsuccinic anhydride and diisobutyl phthalate in total 5 mmol (molar ratio 1:1), then the temperature was slowly raised to 90°C, and the liquid was filtered off, washed twice with titanium tetrachloride, washed four times with hexane, and vacuum-dried to obtain a solid component of the spherical catalyst.

[0052] 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 temper...

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Abstract

The invention relates to a titanium-containing solid catalyst component and catalyst for polymerization of olefin, and applications of the titanium-containing solid catalyst component and the catalyst in the homopolymerization and copolymerization of the olefin. The titanium-containing solid catalyst component utilizes composite carriers of magnesium chloride and silica gel, and a catalyst synthesized by taking 2,3-disubstituted butanedioic anhydride compound as an internal electron donor is used for the polymerization of the olefin during the synthesis of the catalyst component, in particular the polymerization of the propylene, thus the catalyst has excellent catalytic activity and excellent performances, and the obtain polymers have higher melting index. Before the development of the invention, the 2,3-disubstituted butanedioic anhydride compound disclosed by the invention is never taken as the internal electron donor to be applied to the catalyst for the polymerization of the olefin.

Description

technical field [0001] The present invention relates to a titanium-containing solid catalyst component and catalyst for olefin polymerization, and its application in olefin homopolymerization and copolymerization. technical background [0002] In the industry, it is well known that the carrier and the electron donor are two very important aspects in the polypropylene catalyst system. The shape of the carrier particle directly determines the shape of the catalyst, and then controls the particle shape of the polymer, and the carrier also has a great influence on the activity of the catalyst. Electron donors, especially internal electron donors, have a profound effect on the activity of catalysts and the isotacticity of polymerization products. It plays a very important role in the development of Ziegler-Natta catalysts, and the renewal of the internal electron donor directly leads to the renewal of the catalyst system. Different internal electron donors have different effect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F4/654C08F4/651C08F4/649C08F4/02C08F10/06
Inventor 谭扬谢伦嘉凌永泰田宇冯再兴郑刚胡青
Owner CHINA PETROLEUM & CHEM CORP
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