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A kind of method and product thereof for preparing 2,6-di-tert-butylphenol antioxidant resin

A di-tert-butylphenol and anti-oxidation technology, which is applied in the synthesis of anti-oxidation resins, can solve the problems of liquid phase environmental pollution, difficult liquid phase separation, etc., and achieve the effect of stable anti-oxidation performance and large specific surface area

Active Publication Date: 2019-07-23
HUNAN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the defect that the 2,6-di-tert-butylphenol antioxidant is difficult to separate from the liquid phase after being used in the liquid phase, resulting in "pollution" of the liquid-phase environment, and provides a method for preparing 2,6-di-tert-butyl phenol The method of phenol antioxidant resin and its product, this antioxidant resin is easy to separate from the liquid phase after use, and can maintain the stability of the liquid phase environment

Method used

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  • A kind of method and product thereof for preparing 2,6-di-tert-butylphenol antioxidant resin
  • A kind of method and product thereof for preparing 2,6-di-tert-butylphenol antioxidant resin

Examples

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Embodiment 1

[0022] Take the chlorine content as 17.75% and the specific surface area as 900m 2 g -1 45g (wet) of the cross-linked chloromethyl polystyrene resin was put into a 500mL three-necked reaction flask, and 360g of dichloroethane was added to swell for 24h. Add 15g of anhydrous ferric chloride and 25.5g of 2,6-di-tert-butylphenol, stir evenly, raise the temperature to 65°C, and react for 12h to obtain 2,6-di-tert-butylphenol-modified antioxidant polystyrene resin . Suction filtration, soak in 1M hydrochloric acid for 2 hours, wash with deionized water until neutral; then soak in 1M sodium hydroxide for 2 hours, wash with deionized water until neutral. Keep hydrated.

[0023] It is determined that the chlorine content of the 2,6-di-tert-butylphenol-modified anti-oxidation polystyrene resin in this embodiment is 1.31 wt%, and the water content is 45.37 wt%.

Embodiment 2

[0025] Take chlorine content as 16.80wt%, specific surface area as 890m 2 g -1 50g (wet) of the cross-linked chloromethyl polystyrene resin was put into a 500mL three-necked reaction flask, and 200g of dichloroethane was added to swell for 26h. Add 10.0g of anhydrous ferric chloride and 30.5g of 2,6-di-tert-butylphenol, stir evenly, raise the temperature to 60°C, and react for 14 hours to obtain 2,6-di-tert-butylphenol-modified antioxidant polystyrene resin. Suction filter, soak in 1M hydrochloric acid for 1 hour, wash with deionized water until neutral; then soak in 1M sodium hydroxide for 1 hour, wash with deionized water until neutral. Keep hydrated.

[0026] It is determined that the chlorine content of the antioxidant resin supported by 2,6-di-tert-butylphenol in this embodiment is 1.25 wt%, and the water content is 45.38 wt%.

Embodiment 3

[0028] The chlorine content is 17.15%, and the specific surface area is 810m 2 g -1 50.0 g (wet) of the cross-linked chloromethyl polystyrene resin was put into a 500 mL three-necked reaction flask, and 300 g of dichloroethane was added to swell for 12 hours. Add 20.0 g of anhydrous ferric chloride and 34.5 g of 2,6-di-tert-butylphenol, stir evenly, raise the temperature to 70°C, and react for 16 hours to obtain 2,6-di-tert-butylphenol-modified antioxidant polystyrene resin. Suction filtration, soak in 1M hydrochloric acid for 1.5h, wash with deionized water until neutral; then soak in 1M sodium hydroxide for 1.5h, wash with deionized water until neutral. Keep hydrated.

[0029] It has been determined that the chlorine content of the 2,6-di-tert-butylphenol-modified anti-oxidation polystyrene resin in this embodiment is 1.12 wt%, and the water content is 47.61 wt%.

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Abstract

The invention discloses a method for preparing 2,6-di-tert-butyl phenol antioxidant resin and a product thereof. The synthetic method comprises the following steps: firstly, swelling chloromethyl polystyrene resin; then adding a catalyst and 2,6-di-tert-butyl phenol, performing graft modification reaction under a specific environment and performing suction filtration to obtain polystyrene-supported 2,6-di-tert-butyl phenol resin; then sequentially soaking the polystyrene-supported 2,6-di-tert-butyl phenol resin by a hydrochloric acid solution and a sodium hydroxide solution, removing impurities and performing water containing storage. The synthesized antioxidant resin disclosed by the invention has large specific surface area, can fully contact a liquid phase, has stable antioxidant property, further can be easily separated from the liquid phase and avoids the problem of surrounding solution pollution.

Description

technical field [0001] The invention relates to a synthesis method of an antioxidant resin, in particular to a method for preparing 2,6-di-tert-butylphenol antioxidant resin and a product thereof. Background technique [0002] Antioxidants are a class of substances that can help capture and neutralize free radicals, thereby eliminating the damage caused by free radicals to the environment. Antioxidants are usually divided into natural antioxidants and synthetic antioxidants. Natural antioxidants are generally extracted from plants and are purely natural and non-toxic. However, the purification process is complicated, the yield is low, and the cost is high. It is currently difficult to replace synthetic antioxidants. Synthetic antioxidants are usually cheap and have strong antioxidant capacity, but they often have certain toxicity. [0003] 2,6-di-tert-butylphenol antioxidants are synthetic antioxidants with strong antioxidant capacity, good heat resistance and stability, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F8/26C08F8/00C08F112/14
CPCC08F8/00C08F8/26C08F112/14
Inventor 付玉丽张京钟世华张连明许华岚
Owner HUNAN NORMAL UNIVERSITY
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