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Salicylate-compound-containing solid catalyst component for olefin polymerization, and preparation method and application thereof

A technology of solid catalysts and salicylates, which is applied in the field of solid catalyst components for olefin polymerization and its preparation, and can solve problems such as human hazards

Active Publication Date: 2015-08-12
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are often multiple aromatic ring structures in these compounds, which are potentially harmful to the human body

Method used

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  • Salicylate-compound-containing solid catalyst component for olefin polymerization, and preparation method and application thereof
  • Salicylate-compound-containing solid catalyst component for olefin polymerization, and preparation method and application thereof
  • Salicylate-compound-containing solid catalyst component for olefin polymerization, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] (1) After fully replacing the branched flask with nitrogen, add 4.94g of anhydrous magnesium chloride, 18.9g of dried isooctyl alcohol, and 30mL of dried decane. While stirring, the temperature is raised to 130°C and reacted at this temperature for 2 hours. A homogeneous mixture is obtained. 2.65 g of tetrabutyl titanate and 1.6 g of isobutyl benzyl salicylate were added to 5 ml of toluene, and the reaction was stirred at room temperature for 0.5 h to obtain a homogeneous solution. The above homogeneous solution was transferred to the above mixture, and the reaction was continued at 130°C for 1 hour. After the reaction is over, cool to room temperature to form a stable and uniform alcoholate solution. Seal all joints with parafilm and place them in a desiccator overnight.

[0077] (2) The uniform alcoholate solution prepared above was added dropwise within 1h to a reactor fully replaced by nitrogen and filled with 250ml titanium tetrachloride at -20℃. After the addition ...

Embodiment 2

[0084] The reaction flask with branch tube is fully replaced with nitrogen, add 100ml of titanium tetrachloride to cool to -20℃, then add spherical particles of magnesium chloride alkoxide within 1h, stir and start to rise after full contact, when the temperature rises to 60℃ Add isobutyl benzyl salicylate with a molar ratio of 0.125:1 to magnesium halide, continue to heat up, when the temperature rises to 110°C, continue to add isobutyl benzyl salicylate with a molar ratio of 0.125:1 to magnesium chloride Butyl ester, and react at this temperature for 2 hours. After the reaction is complete, filter out the liquid, add 100ml of titanium tetrachloride, continue the reaction at 110°C for 2 hours, filter out the liquid, wash with dry hexane, and dry in vacuum. The solid catalyst component is prepared. The molar ratio of titanium tetrachloride to alcoholate is 2.8:1. The molar ratio of the total amount of benzyl acyl salicylic acid isobutyl added twice to the magnesium chloride is...

Embodiment 3

[0090] The reaction flask with branch tube was fully replaced with nitrogen, 100ml of toluene solvent was added to cool to 0℃, and then spherical magnesium ethoxide particles were added within 1h, and then 50ml of titanium tetrachloride and the molar ratio of magnesium ethoxide were 0.125: 1 benzyl acyl salicylic acid isobutyl ester, stirring after full contact, start to heat up, when the temperature rises to 60 ℃, add benzyl acyl salicylic acid isobutyl ester with a molar ratio of 0.125:1 to magnesium ethoxylate, Continue to heat up, stop heating when the temperature rises to 110°C, react at this temperature for 2 hours, after the reaction is over, filter out the liquid, add 50ml titanium tetrachloride and 100ml toluene solvent, continue the reaction at 110°C for 2 hours, The liquid is filtered, washed with dry hexane, and dried in vacuum to obtain a solid catalyst component. The molar ratio of titanium tetrachloride and magnesium ethoxide is 2.8:1. The molar ratio of the tot...

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Abstract

The invention discloses a solid catalyst component for olefin polymerization, which comprises (1) magnesium halide, (2) a titanium active component and (3) salicylate compounds of which the structural general formula is disclosed in the specification, wherein R1 and R2 are identical or different, and are respectively and independently selected from C1-C12 alkyl groups, or C3-C8 cycloalkyl, aryl or aralkyl groups; and R3, R4, R5 and R6 are identical or different, and are respectively and independently selected from C1-C8 alkyl groups, or C3-C8 cycloalkyl, aryl or aralkyl groups. The catalyst composed of the solid catalyst component, alkyl aluminum and silane compounds can be used for olefin polymerization (copolymerization) to obtain high-activity high-isotacticity polymers.

Description

Technical field [0001] The invention relates to a solid catalyst component for olefin polymerization and a preparation method and application thereof, in particular to a solid catalyst component of a salicylate compound for olefin polymerization, and a preparation method and application thereof. Background technique [0002] As a general-purpose plastic, polypropylene has a wide range of applications in various industrial and civil plastics such as injection molding, extrusion, blown film, coating, spinning, modified engineering plastics, etc. It has become the fastest growing among the five general-purpose resins. Fast product. The fundamental reason for the rapid development of the polypropylene industry lies in the continuous innovation of catalysts and polymerization processes, so that new polypropylene products continue to emerge, greatly expanding the application of polypropylene. Nowadays, the most widely used propylene polymerization catalyst in industry is Ziegler-Natta...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F4/649C08F4/646C08F110/06C08F210/06
Inventor 李化毅周倩李倩张辽云胡友良
Owner INST OF CHEM CHINESE ACAD OF SCI
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