Metallocene, catalyst composition and application of metallocene in synthetic base oil

A catalyst and metallocene technology, which is applied in the field of metallocene catalyst composition catalyzing heavy alpha-olefin oligomerization to prepare synthetic base oil, can solve the problems of low selectivity, low economical efficiency of PAO synthetic oil, etc., to optimize catalytic performance, improve Dispersion effects, achieving chain initiation and chain growth effects

Pending Publication Date: 2022-07-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The low-viscosity products catalyzed by existing catalysts for PAO synthesis are mainly dimerization and trimerization products, and the selectivity of high-carbon products from trimerization to pentamerization is too low, which reduces the economical efficiency of PAO synthetic oil

Method used

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  • Metallocene, catalyst composition and application of metallocene in synthetic base oil
  • Metallocene, catalyst composition and application of metallocene in synthetic base oil
  • Metallocene, catalyst composition and application of metallocene in synthetic base oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) Add 92g propionyl chloride (92.5g / mol) and 84g thiophene (84.14g / mol) to 672g benzene (0.8765g / cm3), stir well, cool to -20°C, and then dropwise add 13g anhydrous chlorine tin (260g / mol). The reaction was stirred for 20h. The product Pa1 (140.14 g / mol) was isolated by extraction-vacuum distillation technique, and the yield was 90%.

[0056] (2) 70g of the Pa1 product (140.14g / mol) obtained in step (1) and 91g of hexamethylenetetramine (140g / mol) were added to 92g of acetic anhydride (102g / mol), and the reaction was stirred for 20h. is 90°C. 56ml of sodium hydroxide with a concentration of 2mol / L was added, and the reaction was stirred for 3h. Extraction technology separates organic matter. Then, the extract and 14.4 g of methanesulfonic acid (96 g / mol) were added to 560 g of dichloromethane, and the reaction was stirred at a temperature of 30 °C and a reaction time of 2 h. The product Pb1 was isolated by extraction-vacuum distillation technique, and the yield w...

Embodiment 2

[0066] (1) Add 92g propionyl chloride (92.5g / mol) and 100g thiophene (84.14g / mol) to 1000g benzene (0.8765g / cm3), stir well, cool to -20°C, and then dropwise add 2.6g anhydrous Tin chloride (260g / mol). The reaction was stirred for 20h. The product Pa2 (151g / mol) was obtained by extraction-vacuum distillation technique. The yield was 81%.

[0067] (2) 70g of the Pa2 product (140.14 g / mol) obtained in step (1) and 112g of hexamethylenetetramine (140g / mol) were added to 102g of acetic anhydride (102g / mol), and the reaction was stirred for 20h. is 90°C. 25ml of sodium hydroxide with a concentration of 4mol / L was added, and the reaction was stirred for 3h. Extraction technology separates organic matter. Then, the extract and 24 g of methanesulfonic acid (96 g / mol) were added to 700 g of dichloromethane, and the reaction was stirred at a temperature of 30 °C and a reaction time of 2 h. The product Pb2 was obtained by extraction-vacuum distillation technique. The yield was 91%...

Embodiment 3

[0077] (1) Add 106g butyryl chloride (106.5g / mol) and 84g thiophene (84.14g / mol) to 672g benzene (0.8765g / cm3), stir well, cool to -20°C, and then dropwise add 13g anhydrous chlorine tin (260g / mol). The reaction was stirred for 20h. The product Pa3 (151g / mol) was obtained by extraction-vacuum distillation technique. The yield was 90%.

[0078] (2) 77g of the Pa3 product (154.14g / mol) obtained in step 1 and 91g of hexamethylenetetramine (140g / mol) were added to 92g of acetic anhydride (102g / mol), and the reaction was stirred for 20h at a reaction temperature of 90 °C. 56ml of sodium hydroxide with a concentration of 2mol / L was added, and the reaction was stirred for 3h. Extraction technology separates organic matter. Then, the extract and 14.4 g of methanesulfonic acid (96 g / mol) were added to 616 g of dichloromethane, and the reaction was stirred at a temperature of 40 °C and a reaction time of 2 h. The product Pb3 was obtained by extraction-vacuum distillation technique...

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PUM

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Abstract

The invention discloses a metallocene catalyst composition. The catalyst composition is composed of alkyl-substituted cyclopentadieno-thiophene metallocene, an organic boride, alkyl metal and a solvent n-heptane, and a sealant is C16 or C20 isoparaffin. Wherein the ratio of n metallocene to n organic boron to n alkyl metal is 1: (0.6-1.5): (5-500); the proportion of the solvent in the catalyst is 60-99 wt%. The catalyst provided by the invention adopts a novel metallocene structure, effectively regulates and controls the electron and space effects of metallocene, and can significantly improve the yields of trimerization, tetramerization and pentamerization products of heavy alpha-olefin polymerization products.

Description

technical field [0001] The present invention relates to a catalyst composition and its application. Specifically, a metallocene catalyst composition catalyzes the oligomerization of heavy alpha-olefins to prepare synthetic base oil. Background technique [0002] Poly-alpha-olefin synthetic oil (PAO) is a synthetic oil with excellent properties, which is usually polymerized from C8-C12 olefins. PAO synthetic lubricating oil is equal to or even superior to mineral oil in terms of good viscosity, excellent viscosity-temperature performance, and lubricating performance, thermal stability, oxidation stability, pour point and other characteristics of synthetic oil. [0003] The performance of PAO products is related to its degree of polymerization, viscosity, viscosity index and molecular weight distribution. The factors that determine these properties include olefin raw materials, catalyst selection, process conditions, etc. The selection of catalysts has an effect on the degree...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F17/00B01J31/22C07C2/32C07C11/02C10M105/04
CPCC07F17/00B01J31/226C07C2/32C10M105/04B01J2531/48B01J2231/20C10M2203/024C07C11/02Y02P20/584
Inventor 张志智王陶孙潇磊刘全杰张喜文
Owner CHINA PETROLEUM & CHEM CORP
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