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Hindered-phenol-containing phenylenediaminothioformate, antioxidant containing compound and application thereof in gas engine lubricating oil

A phenylenediaminothioformate, gas engine technology, applied in the field of lubricating oil, can solve the problem of unsatisfactory antioxidants, achieve superior anti-oxidation performance, strong anti-oxidation ability, outstanding anti-friction and anti-wear performance effect

Pending Publication Date: 2016-04-13
SHANDONG YUANGEN PETROLEUM CHEM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the technical problem that the above-mentioned existing antioxidants cannot meet the requirements of gas engine lubricating oils, and proposes a compound containing Phenylenediaminothioformates of hindered phenols, antioxidants containing the compounds and their use in gas engine lubricating oils

Method used

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  • Hindered-phenol-containing phenylenediaminothioformate, antioxidant containing compound and application thereof in gas engine lubricating oil
  • Hindered-phenol-containing phenylenediaminothioformate, antioxidant containing compound and application thereof in gas engine lubricating oil
  • Hindered-phenol-containing phenylenediaminothioformate, antioxidant containing compound and application thereof in gas engine lubricating oil

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Embodiment 1

[0036] Embodiment 1, this embodiment provides a preparation method of hindered phenol-containing phenylenediaminothioformate. First, dissolve 50kg of N, N dihydrocarbyl phenylenediamine in 300L of absolute ethanol (the solubility of phenylenediamine in absolute ethanol is small, and it can be dissolved by heating appropriately), and after it is completely dissolved, add 0.1mol / L of Hydrochloric acid ethanol solution 150L, ​​control PH ≤ 1, heat will be released at this time, cool properly, and stir evenly. Then add 60L of formaldehyde solution with a mass fraction of 33% and 60kg of hindered phenol, stir for 6 hours at a constant temperature of 15-20°C, and place for 10 hours to react. After the reaction was completed, the solid was filtered and collected, and then washed three times with ethanol with a mass fraction of 95%, and the volume of each washing was 10 L. The solid is then suspended in 100L of ethanol with a mass fraction of 95%, and with stirring, the mass fraction...

Embodiment 2

[0037] Embodiment 2. This embodiment provides a multi-component composite antioxidant composition containing hindered phenol phenylenediaminothioformate and its preparation method. The composition and mass ratio of each composition are as follows:

[0038]

[0039] The typical preparation method of the multi-component composite antioxidant composition provided in this example is as follows: first, add 10 kg of 150 SN base oil to a blending kettle with a stirrer, stir and heat to 120 °C, add 10 kg of hindered phenolic phenylenediamine After the phenylenediaminothioformate of hindered phenol is completely dissolved, add 50kg of p-, p-diisooctyl diphenylamine, and treat all p-, p-diisooctyl diphenylamine After dissolving, stir and cool down to 60°C; then keep the temperature at 60°C±5°C, add 20kg of thiocarbamate and 10kg of organic molybdate in turn, after the feeding is completed, keep the temperature at 60°C±5°C and stir for 1 hour, filter and pack The finished multi-componen...

Embodiment 3

[0040] Embodiment 3. This embodiment provides a multi-component composite antioxidant composition containing hindered phenol phenylenediaminothioformate and a preparation method thereof. The substances and mass ratios of each composition in the composition are as follows:

[0041]

[0042] The typical preparation method of the multi-component composite antioxidant composition provided in this example is to add 10 kg of 150 SN base oil into a blending kettle with a stirrer, stir and heat up to 120 ° C, add 15 kg of hindered phenolic phenylenediamine Thioformate, after the phenylenediaminothioformate of hindered phenol is dissolved completely, then add 40kg to, p-diisooctyl diphenylamine, treat right, p-diisooctyl diphenylamine, stir Cool down to 60°C, then keep the temperature at 60°C±5°C, add 20kg of thiocarbamate and 15kg of organic molybdate in turn, after the feeding is completed, keep the temperature at 60°C±5°C and stir for 1 hour, then filter to obtain the finished mul...

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Abstract

The invention provides a hindered-phenol-containing phenylenediaminothioformate, an antioxidant containing the compound and application thereof in gas engine lubricating oil. The preparation process comprises the following steps: (1) by using the Mannich reaction principle, carrying out condensation reaction on an alkali constituent N,N-dialkyl phenylenediamine, an acid constituent hindered phenol and formaldehyde to generate a Mannich intermediate a; and (2) adding carbon bisulfide into the Mannich intermediate a to carry out the nucleophilic addition reaction, thereby obtaining the hindered-phenol-containing phenylenediaminothioformate product. The new synthetic antioxidant has the advantages in the phenol-type and amine-type antioxidants, and has higher oxidation resistance. The antioxidant has favorable extreme pressure antiwear and anti-friction anti-friction properties. The gas engine lubricating oil has the advantages of high viscosity index, high flash point, low sulfur content, high oxidation resistance and excellent oxidation stability, and greatly prolongs the service time of the oil product.

Description

technical field [0001] The invention belongs to the field of lubricating oil, and relates to a gas engine lubricating oil, in particular to a hindered phenol-containing phenylenediamine thioformate, an antioxidant containing the compound and an application thereof in a gas engine lubricating oil. Background technique [0002] With the rapid development of social economy and industrial technology, the automobile industry has also developed rapidly, and the number of automobiles has increased sharply. However, the operation of automobiles consumes a large amount of energy and emits a large amount of harmful gases. The development of automobiles has also brought problems to the environment and energy. With the enhancement of people's awareness of energy conservation and environmental protection, natural gas, a clean energy source, has been applied in the automobile industry. Gas engines have developed rapidly in recent years due to their economy, and have been widely used in au...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C333/24C10M135/18C10M141/12C10M169/04C10N30/06C10N30/10C10N40/25
CPCC07C333/24C10M135/18C10M141/12C10M169/044C10M2203/1025C10M2205/02C10M2205/022C10M2205/024C10M2207/283C10M2215/064C10M2215/086C10M2219/046C10M2219/066C10M2219/088C10M2223/045C10M2227/08C10M2229/041C10N2010/04C10N2030/06C10N2030/10C10N2040/25
Inventor 何井松袁俊洲宋来功乔良
Owner SHANDONG YUANGEN PETROLEUM CHEM
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