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Clean production method and application of a kind of bisphenol compound antioxidant

A clean production and compound technology, applied in the preparation of organic compounds, chemical instruments and methods, lubricating compositions, etc., can solve problems such as unfavorable industrial production, harsh reaction conditions, serious environmental pollution, etc., and achieve scientific and reasonable route design and reaction. The effect of short cycle and high catalytic efficiency

Active Publication Date: 2017-07-28
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Taking the technology disclosed by CN100572350A as an example, solvents and surfactants need to be added during the synthesis process, thereby producing waste water containing surfactants, which will still cause environmental pollution
[0007] In summary, the existing synthetic techniques of bisphenol compound antioxidants basically have harsh reaction conditions, difficult operation, harmful waste water, difficult post-treatment, serious environmental pollution, and unfavorable industrial production.

Method used

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  • Clean production method and application of a kind of bisphenol compound antioxidant
  • Clean production method and application of a kind of bisphenol compound antioxidant
  • Clean production method and application of a kind of bisphenol compound antioxidant

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preparation example Construction

[0041] In the preparation method of the present invention, the reaction is carried out in a closed reactor, and the reaction system performs condensation reaction in a closed state, effectively avoiding the oxidation of fatty aldehyde and alkylphenol raw materials and the oxidation of bisphenol compound products, and the result is The crude product of bisphenol compound is off-white crystal.

[0042] After the reaction is finished, the solid catalyst needs to be removed. Commonly used methods include but are not limited to: filtration, centrifugal filtration, decantation and other methods to separate the solid catalyst from the desired product. Filter aids such as diatomaceous earth (Celite) can be used to improve separation efficiency.

[0043] A typical application of the bisphenol compound antioxidant of the present invention is as an additive in lubricating oil compositions, but it can also be used in other applications. Further, some embodiments of the present invention ...

Embodiment 1

[0046] Add 78ml of methylal, 36g of 2-tert-butyl-p-cresol (4:1 molar ratio) and 7.2g of clay activated by p-toluenesulfonic acid into a thick-walled pressure-resistant glass bottle with a magnet , reacted at a reaction temperature of 40°C and a reaction time of 3 hours. After the reaction, the reaction product was cooled to room temperature, and the catalyst was separated by suction filtration to obtain a crude reaction product, which was washed to obtain 2,2'-methylene Base-bis(4-methyl-6-tert-butylphenol). The product yield is greater than 75%, and the product purity is greater than 98%.

[0047] The p-toluenesulfonic acid-activated clay used in this embodiment can also be replaced by other acid clays containing free acids and other acid-activated acid clays listed above.

Embodiment 2

[0049] 2-tert-butyl p-cresol 109g, paraformaldehyde 10g (molar ratio is 2:1) and p-toluenesulfonic acid activated clay 10.9g are added in a thick-walled pressure-resistant glass bottle with a magnet, in The reaction temperature is 100° C., and the reaction time is 1 hour. After the reaction, the aftertreatment of the reaction product is the same as in Example 1. The product yield is greater than 75%, and the product purity is greater than 98%.

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Abstract

The invention discloses a cleaner production method and a use of a bisphenol compound anti-oxidant. The cleaner production method comprises that fatty aldehyde and dialkyl-substituted phenol as raw materials undergo a reaction in the presence of a solid acid as a catalyst in an enclosed environment and the reaction product is subjected to hot filtration so that a desired product is obtained. The desired product can be used for preparation of a lubricating oil composition or can be used as an antiager of plastic and rubber. The production method of the bisphenol compound anti-oxidant has the advantages of simple processes, mild conditions, use of a catalyst and raw materials with a wide source, a cheap price and easy availability, short reaction period, control convenience, high process safety, low energy consumption in production, high yield, high product purity, no use of moisture, an organic solvent and a surfactant in the reaction, no use of a water washing product in the later period, no production of waste water and control and reduction of pollutant discharge. The production method is a safe, energy saving and eco-friendly novel technology.

Description

technical field [0001] The invention relates to an antioxidant product, in particular to a clean production method and application of a bisphenol compound antioxidant. Background technique [0002] Lubricating oil refers to liquid or semi-solid lubricants used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and processed parts. It mainly plays the roles of lubrication, cooling, rust prevention, cleaning, and sealing. Lubricating oil is composed of base oil and additives. Base oil is the main component of lubricating oil and determines the basic performance of lubricating oil. Additives can make up for and improve the performance of base oil. On the one hand, additives can impart properties or performances that the base oil itself does not have, such as anti-foaming, demulsification, etc.; on the other hand, it can also improve the original properties or properties of the base oil, such as anti-oxidation, anti-wear, anti-rust,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C39/16C07C37/20C07C37/16C08K5/13C10M129/10C10N30/10
CPCC07C37/16C07C37/20C08K5/13C10M129/10C10M2207/026C10N2030/10C07C39/16
Inventor 刘升高马玉杰刘烨王立敏刘丹贺军令曾红玲
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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