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Catalyst for preparing saturated lubricant base oil

A technology of diphenylmethyl and trifluoromethylaniline, which is applied in the field of catalysts for the preparation of saturated lubricating oil base oils, can solve problems such as complex processes, easy-to-corrosion equipment, and harsh reaction conditions, and achieve enhanced electrophilicity and improved catalytic performance. The effect of activity and high thermal stability

Inactive Publication Date: 2020-06-12
卢静
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method of preparing PAO lubricating oil base oil is not only easy to corrode equipment, but also has complicated process and harsh reaction conditions

Method used

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  • Catalyst for preparing saturated lubricant base oil
  • Catalyst for preparing saturated lubricant base oil
  • Catalyst for preparing saturated lubricant base oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a kind of 2,6-bis(benzhydryl)-4-trifluoromethylaniline, and its synthesis method is as follows.

[0032] Synthesis of 2,6-bis(benzhydryl)-4-trifluoromethylaniline: 4-trifluoromethylaniline (3.78g, 23.5mmol) and benzhydryl alcohol (8.65 g, 47mmol), equipped with a reflux device, heated to (about 70 ° C), after p-toluidine and benzhydryl melted, dissolved ZnCl with concentrated HCl 2 (3g, 23.5mmol), dropwise added ZnCl 2 ·The HCl mixed solution was heated up to 160°C and reacted for 3 hours. After the reaction stopped, cool to room temperature and use CH 2 Cl 2 Dissolve solids, extract, retain organic phase, add Na 2 CO 3 Remove excess HCl, filter, add silica gel to the filtrate to absorb impurities, filter, spin the filtrate to obtain a solid powder, wash with ethyl acetate to obtain a white powder, and the yield is 78.0%. 1 H-NMR (400MHz, CDCl 3 ),δ(ppm):7.30-7.16(m,20H,Ph),6.90(s,2H,Ar-H),5.58(s,2H,CH),5.32(s,2H,NH 2 ). 13 C-NMR (100MH...

Embodiment 2

[0034] This embodiment provides a pyridine-imine ligand, and its synthesis method is as follows.

[0035] Synthesis of pyridine-imine ligand: Weigh 2-acetylpyridine (0.605g, 5.0mmol), 2,6-bis(benzhydryl)-4-trifluoromethylaniline (2.98g, 5.0mmol) 1. An appropriate amount of p-toluenesulfonic acid was dissolved in 100 mL of toluene, refluxed for 10 h, and the crude product after the solvent was spin-dried was recrystallized with ethanol to obtain yellow crystals with a yield of 85.2%. 1 H-NMR (400MHz, CDCl 3 ),δ(ppm):8.80(d,1H,Py),8.52(d,1H,Py),7.91(t,1H,Py),7.64(t,1H,Py),7.30-7.10(m,12H ,Ph),7.08(t,8H,Ph),6.87(s,2H,Ar-H),6.68(s,2H,CH),5.52(s,1H,CH),2.02(s,3H,CH 3 ). 13 C-NMR (100MHz, CDCl 3 ), δ(ppm): 170.50, 165.37, 155.04, 150.24, 145.45, 144.25, 139.63, 138.26, 130.68, 129.76, 126.68, 123.56, 116.58, 52.15, 17.88.

Embodiment 3

[0037] This example provides a pyridine-imine palladium complex, the synthesis method of which is as follows.

[0038] Add 1.2 mmol of pyridine-imine ligand, 1.0 mmol of (COD)PdMeCl, and 20 mL of dichloromethane into a Schlenk test tube, and stir overnight at room temperature. The solution was evaporated to 5 mL under vacuum, then 30 mL of n-hexane was added. The yellow powder pyridine-imine palladium complex was obtained by filtration with G4 filter ball, and the yield was 82.5%. 1 H-NMR (400MHz, CDCl 3 ),δ(ppm):8.60(d,1H,Py),8.05(d,1H,Py),7.73(t,1H,Py),7.34(t,1H,Py),7.28-7.10(m,12H ,Ph),7.02(t,8H,Ph),6.69(s,2H,Ar-H),5.26(s,2H,CH),2.19(s,3H,CH 3 ),1.06(s,3H,Pd-CH 3 ). 13 C-NMR (100MHz, CDCl 3), δ(ppm): 169.71, 156.25, 148.56, 146.42, 144.15, 142.76, 136.42, 132.50, 131.52, 129.65, 128.78, 126.52, 121.36, 52.42, 21.57, 17.20.

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Abstract

The invention discloses a catalyst for preparing saturated lubricant base oil. The saturated lubricating base oil is obtained by catalyzing an ethylene oligomerization reaction with a pyridine-imine palladium complex as a main catalyst. The method for producing the saturated lubricating base oil comprises the following steps: 1, catalyzing ethylene oligomerization by using a pyridine-imine palladium complex, and obtaining a highly branched product by using a chain walking process; and 2, hydrogenating polyolefin to obtain the lubricating base oil. Various additives are added into the base oilto prepare high-performance fully-synthetic lubricating oil, the obtained lubricating base oil has the characteristics of good antioxidant stability, excellent flowing property and low pour point, excellent viscosity-temperature property and the like due to high branching.

Description

technical field [0001] The invention belongs to the field of catalytic polymerization of olefins, in particular to a catalyst for preparing saturated lubricating oil base oil. Background technique [0002] Lubricating oil generally consists of two parts: base oil and additives. Lubricant base oil is the basic component of lubricating oil, which determines the basic properties of lubricating oil. Additives can make up for and improve some performance deficiencies of base oil, endow lubricating oil with new properties, and are an important part of lubricating oil. Base oils are mainly divided into three categories: mineral base oils, synthetic base oils and biological base oils. Early lubricating oil base oils were mainly mineral oils. Mineral base oils are not suitable for extreme conditions such as aviation, aerospace, and polar regions. Synthetic lubricating oils have excellent low temperature performance, good lubricating performance and long service life. They are suitab...

Claims

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Application Information

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IPC IPC(8): C07F15/00C08F110/02C08F4/80C08F8/04C10M107/04C10N20/02C10N20/04
CPCC07F15/006C08F8/04C08F110/02C10M107/04C10M2205/0225C08F4/80C08F2500/02C08F2500/03
Inventor 卢静
Owner 卢静
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