Composite amine antioxidant, preparation and use thereof

An antioxidant, complex amine technology, applied in chemical instruments and methods, compositions for inhibiting chemical changes, etc., can solve the problems of complex operating conditions, easy polymerization, difficult control, etc., to simplify operating conditions and improve comprehensive performance. , the effect of reducing the content of free amines

Active Publication Date: 2009-01-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses two kinds of olefins as the raw material for alkylation, and styrene is easy to polymerize in the reaction to generate by-products; at the same time, the operating conditions are complicated and the control is difficult

Method used

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  • Composite amine antioxidant, preparation and use thereof
  • Composite amine antioxidant, preparation and use thereof
  • Composite amine antioxidant, preparation and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In a 250ml autoclave, add 33.8 grams (0.2mol) of diphenylamine, 21.9 grams (0.1mol) of phenyl-α-naphthylamine, 50.4 grams (0.45mol) of diisobutylene, 2 grams of neutral clay and AlCl 3 Composite catalyst, 20ppm hydroquinone polymerization inhibitor, three reaction systems replaced with nitrogen. Heat to 170°C for reaction, start stirring at 100°C at 200 rpm. The reaction pressure was 0.30MPa, and the pressure gradually decreased to 0.17MPa as the reaction progressed. After the reaction was carried out for 10 hours, the material was cooled and transferred to a 250ml three-necked flask, heated and vacuum distilled at a residual pressure of 60mmHg and a temperature of 140°C for 20 minutes. Remove unreacted diisobutene starting material and a small amount of water. Then the material temperature was lowered to 120° C., and the catalyst waste residue was removed by filtration. 86.34 g of reddish-brown liquid viscous product were obtained.

Embodiment 2

[0035] Add 25.4 grams (0.15mol) of diphenylamine, 32.8 grams (0.15mol) of phenyl-α-naphthylamine, 67.2 grams (0.6mol) of diisobutylene, 5 grams of neutral clay and AlCl in a 250ml autoclave 3 Composite catalyst, 20ppm hydroquinone polymerization inhibitor, three reaction systems replaced with nitrogen. Heat up to 175°C for reaction, start stirring when the temperature is 100°C, and the rotation speed is 200 rpm. The reaction pressure was 0.38MPa, and the pressure gradually decreased to 0.15MPa as the reaction progressed. After the reaction was carried out for 12 hours, the material was cooled and transferred to a 250ml three-necked flask, heated and vacuum distilled at a residual pressure of 60mmHg and a temperature of 140°C for 20 minutes. Remove unreacted diisobutene starting material and a small amount of water. Then the material temperature was lowered to 120° C., and the catalyst waste residue was removed by filtration. 91.93 g of reddish-brown liquid viscous product we...

Embodiment 3

[0037] In a 250ml stainless steel autoclave, add 8.45 grams (0.05mol) of diphenylamine, 54.75 grams (0.25mol) of phenyl-α-naphthylamine, 39.2 grams (0.35mol) of diisobutylene, 8 grams of neutral clay and AlCl 3 Composite catalyst, 30ppm hydroquinone polymerization inhibitor, three reaction systems replaced with nitrogen. Heating to 180°C for reaction, and stirring at a temperature of 100°C at a speed of 200 rpm. The reaction pressure is 0.30MPa, and the pressure is gradually reduced to 0.18MPa along with the reaction. After the reaction is carried out for 2 hours, 11.2 grams (0.1mol) of diisobutylene is added by a metering pump, and the temperature is kept to continue the reaction. After the reaction is carried out for 4 hours, 11.2 grams of diisobutylene are added. (0.1mol) diisobutene, keep the temperature and continue the reaction. After the reaction is over for 7 hours, cool the material and transfer it to a 250ml three-necked flask. At a residual pressure of 60mmHg and a ...

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Abstract

The invention provides a composite amine antioxidant, which at least comprises the following two substances: (1) alkylated diphenylamine and (2) alkylated N-phenyl-alpha-naphthylamine. The composite amine antioxidant is prepared by addition of diisobutylene into mixture of the diphenylamine and the N-phenyl-alpha-naphthylamine for alkylation reaction in the presence of acid catalyst. The composite amine antioxidant provided by the invention has good oil-soluble performance and antioxidation, and can be widely applied to various lubricating oil.

Description

technical field [0001] The invention relates to a compound amine antioxidant containing alkylated N-phenyl-α-naphthylamine and alkylated diphenylamine, a preparation method and application thereof. Background technique [0002] During the use of mineral oil and synthetic oil, it will inevitably contact with oxygen in the air and the metal surface to undergo chemical action, oxidize and deteriorate, generate acidic substances, and cause equipment corrosion. In order to delay the oil oxidation process and improve the performance, usually the most effective way is to add antioxidants to the oil. This is especially true in engine oil, because the engine piston, cylinder liner and piston area work at a high temperature, and the gas blow-by after fuel combustion causes catalytic oxidation. [0003] Amine antioxidants not only have good high-temperature anti-oxidation performance, but also have the characteristics of ash-free and phosphorus-free and good oil solubility, so they ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K15/16C09K15/26
Inventor 张辉李新华李华杨永璧
Owner CHINA PETROLEUM & CHEM CORP
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