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Industrial water washing method of antioxidant 300 crude product

A technology for antioxidants and crude products, which is applied in the field of purification of antioxidants, can solve the problems of unsuitability for industrial production and high cleaning temperature, and achieve the effect of good washing effect, low cleaning temperature and high purity

Inactive Publication Date: 2018-11-02
张森
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are the following defects: high cleaning temperature, not suitable for industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The industrial water washing method of described antioxidant 300 crude product, comprises the steps:

[0019] (1) In the reaction kettle, add 150# solvent oil and 200# solvent oil, add antioxidant 300 crude product to dissolve, heat up to 40°C, add saturated sodium chloride solution, stir and separate to obtain the organic phase;

[0020] (2) Cool the organic phase to 5°C, filter, and collect the filtrate to obtain the antioxidant 300 product.

[0021] in,

[0022] The quality of described 150# solvent oil and 200# solvent oil is 2:1.

[0023] The added amount of the antioxidant 300 crude product is 40% of the total mass of 150# solvent oil and 200# solvent oil.

Embodiment 2

[0025] The industrial water washing method of described antioxidant 300 crude product, comprises the steps:

[0026] (1) In the reaction kettle, add 150# solvent oil and 200# solvent oil, add antioxidant 300 crude product to dissolve, heat up to 50°C, add saturated sodium chloride solution, stir and separate to obtain the organic phase;

[0027] (2) Cool the organic phase to 8°C, filter, and collect the filtrate to obtain the antioxidant 300 product.

[0028] in,

[0029] The quality of described 150# solvent oil and 200# solvent oil is 2:1.

[0030] The added amount of the antioxidant 300 crude product is 50% of the total mass of 150# solvent oil and 200# solvent oil.

Embodiment 3

[0032] The industrial water washing method of described antioxidant 300 crude product, comprises the steps:

[0033] (1) In the reaction kettle, add 150# solvent oil and 200# solvent oil, add antioxidant 300 crude product to dissolve, heat up to 60°C, add saturated sodium chloride solution, stir and separate to obtain the organic phase;

[0034] (2) Cool the organic phase to 10°C, filter, and collect the filtrate to obtain the antioxidant 300 product.

[0035] in,

[0036] The quality of described 150# solvent oil and 200# solvent oil is 2:1.

[0037] The added amount of the antioxidant 300 crude product is 60% of the total mass of 150# solvent oil and 200# solvent oil.

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PUM

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Abstract

The invention relates to a purification method of an antioxidant, in particular to an industrial water washing method of an antioxidant 300 crude product. The industrial water washing method of the antioxidant 300 crude product comprises the following steps: firstly, adding No.150 solvent oil and No.200 solvent oil into a reaction still, and adding the antioxidant 300 crude product for dissolving;after the temperature is raised to 40 to 60 DEG C, adding a saturated sodium chloride solution, stirring, layering and separating to obtain an organic phase; secondly, cooling the organic phase to 5to 10 DEG C, filtering and collecting filtrate to obtain an antioxidant 300 product. By adopting the No.150 solvent oil and the No.200 solvent oil as washing solvents, the industrial water washing method of the antioxidant 300 crude product disclosed by the invention has the advantages of low cleaning temperature, good washing effect and suitability for industrialized production; in addition, theindustrial water washing method combines with cooling to remove partial impurities in a filtering mode, so that the washing effect is good and the obtained antioxidant 300 product has high purity.

Description

technical field [0001] The invention relates to a method for purifying antioxidants, in particular to an industrial water washing method for crude antioxidant 300. Background technique [0002] Antioxidant 300 is a typical thiobisphenol antioxidant. As the main antioxidant of hindered phenols, due to its special structure, it has dual functions of free radical terminator and hydroperoxide decomposing agent, suitable for polyolefin, polyester, polystyrene, ABS resin and poly Vinyl chloride, etc., and also suitable for white, colorful or transparent products. In addition, when used with carbon black, it shows excellent synergistic effect, which is unmatched by commonly used antioxidants. [0003] The process of preparing the antioxidant 300 crude product into the antioxidant 300 fine product mainly involves a water washing process. The result of washing is directly related to the quality of Antioxidant 300 Boutique. The washing process mainly washes ammonium chloride and m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C319/28C07C323/20
CPCC07C319/28C07C323/20
Inventor 张森
Owner 张森
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