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Quenching oil composition and manufacturing method thereof

A technology of composition and quenching oil, which is applied in the direction of quenching agent, manufacturing tools, heat treatment equipment, etc., and can solve the problems of insufficient attention affecting workpiece processing and anti-rust performance

Active Publication Date: 2017-04-26
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when these prior art compounds are used in quenching oil, there is still room for improvement in the high-temperature oxidation resistance and detergency of the oil.
In addition, in addition to the adverse effects of deposits, corrosion will also seriously affect the subsequent processing of the workpiece
The existing technology does not pay enough attention to the anti-rust performance

Method used

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  • Quenching oil composition and manufacturing method thereof
  • Quenching oil composition and manufacturing method thereof
  • Quenching oil composition and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0236] In a 500ml four-neck flask equipped with a stirrer, thermometer, condenser and dropping funnel, add 58.79g (0.323mol) of 2-tert-butyl-6-mercaptophenol, 6.88g (0.048mol) of boron trifluoride Ethyl ether (catalyst for alkylation reaction), 100ml of n-hexane solvent and 161.61g (0.162mol) of polyisobutene (Mn=1000, manufactured by Jihua Group Fine Chemicals Co., Ltd.) were reacted at 80°C for 2h. After the reaction, the reaction mixture was washed once with 5% potassium hydroxide solution by mass fraction, and washed to neutrality with hot water to remove the catalyst, and then the solvent and unreacted phenol were distilled off under reduced pressure to obtain polyisobutylene mercaptophenol, hydroxyl The value was 53.49 mgKOH / g. For the determination of hydroxyl value, refer to the acetic anhydride method in GB / T7383-2007.

[0237] An example reaction is as follows:

[0238]

[0239] From the proton nuclear magnetic spectrum analysis of the polyisobutylene mercaptoph...

Embodiment 2

[0241]

[0242] Under a nitrogen protection atmosphere, in a 250ml four-necked flask equipped with a stirrer, a thermometer, a condenser and a dropping funnel, add 30.58 grams (156 mmol) of 2-mercapto-4-methyl-6-methylphenol, 9.29 grams ( 112mmol) formaldehyde, 32.38g (176mmol) N-phenyl-p-phenylenediamine and 100mL toluene, stirred rapidly, and reacted at 100°C for 2h. After the reaction was finished, the solvent and a small amount of water generated were distilled off under reduced pressure, and the shielded phenol product with the structure shown in the title was obtained through column chromatography separation.

[0243] Product characterization data are as follows:

[0244] 1 H NMR (300MHz, CDCl 3 ): δ1.40(9H), 2.37(3H), 4.02(1H), 4.83(2H), 6.95-7.00(12H), 7.26(2H), 7.55(1H);

[0245] 13 C NMR (75MHz, CDCl 3 ): δ21.2, 30.1, 34.1, 49.9, 114.3, 118.9, 119.4, 121.8, 122.2, 125.8, 126.5, 129.5, 131.8, 132.3, 133.5, 143.3, 150.8;

[0246] C 24 h 28 N 2 OS calcd for ...

Embodiment 3

[0248]

[0249] Under nitrogen protection atmosphere, in the 250ml four-necked flask that stirrer, thermometer, condenser tube and dropping funnel are equipped with, add 31.65 grams (133mmol) 2,6-di-tert-butyl-4-mercaptophenol, 1.86 grams (62mmol ) formaldehyde, 28.15 grams (153 mmol) of N-phenyl-p-phenylenediamine, 0.75 grams (7.5 mmol) of hydrochloric acid and 150 mL of isopropanol, stirred rapidly, and reacted at 25 ° C for 24 h. After the reaction was finished, the solvent and a small amount of water generated were distilled off under reduced pressure, and the shielded phenol product with the structure shown in the title was obtained through column chromatography separation.

[0250] Product characterization data are as follows:

[0251] 1 H NMR (300MHz, CDCl 3 ): δ1.36-1.54(18H), 3.75(1H), 4.80(2H), 5.32(1H), 6.80(2H), 6.97(5H), 7.17(2H), 7.26(2H), 7.55(1H) ;

[0252] 13 C NMR (75MHz, CDCl 3 ): δ29.6, 34.6, 51.2, 119.4, 121.8, 126.5, 129.5, 131.4, 136.6, 144.5, 1...

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Abstract

The invention relates to a quenching oil composition. The quenching oil composition comprises a shielding phenol compound, a cooling accelerant, a brightening agent, an antirusting agent and a main amount of lubricating oil foundation oil; the structure of the shielding phenol compound is expressed by a formula (I); and in the formula (I), each radical is defined as the specification. The quenching oil composition can satisfy the increasingly harsh requirements on oxidation resistance by present higher-specification products, and shows excellent clean dispersion performance, corrosion resistance and rust resistance.

Description

technical field [0001] The invention relates to a quenching oil composition. Specifically, the present invention relates to a graded quenching oil composition having excellent thermo-oxidative stability and less coking. Background technique [0002] With the development of mechanical and electronic industry, national defense industry and aerospace industry, the requirements for quenching and cooling technology of metal materials are getting higher and higher. In order to solve the problem of quenching deformation of precision parts and large modulus gears, developed countries have developed isothermal quenching oils and graded quenching oils with operating temperatures of 120-200 °C. Since graded quenching oil is used at high temperature, it has high requirements for high temperature oxidation stability. For this reason, antioxidants such as 2,6-di-tert-butylphenol and alkylated diphenylamine are mainly added to the graded quenching oil. However, the thermal oxidation sta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/58
CPCC21D1/58
Inventor 苏朔段庆华张辉
Owner CHINA PETROLEUM & CHEM CORP
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