Preparation method of antioxidant product with stable performance

A technology of stable performance and antioxidant, applied in the field of preparation of antioxidant products with stable performance, can solve the quality and stability defects of antioxidant 168 products, unable to obtain high-purity antioxidant 168 products, and the occurrence of 168 products. Hydrolysis reaction and other problems, to achieve the effect of long-term anti-hydrolysis performance, good anti-oxidation performance, and easy industrial production
CN101798325AActive Publication Date: 2010-08-11溧阳常大技术转移中心有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
溧阳常大技术转移中心有限公司
Publication Date
2010-08-11

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Abstract

The invention provides a preparation method of antioxidant product with stable performance. 2, 4-di-tert-butylphenol and phosphorus trichloride are taken as raw materials, organic amino compound is taken as catalyst, organic solvent is taken as reaction solvent, esterification is carried out to prepare tri(2,4-ditertrabutyl phenyl) phosphite ester crystal product, namely antioxidant crude product; after reaction is completed, the organic solvent is added into a kettle, so that the antioxidant crystal product is completely dissolved into the organic solvent, an amount of triethylamine is added to react with HCl remained in product mixture, so as to generate triethylamine hydrochloride crystal, filter aid is added to remove solids triethylamine hydrochloride and organic amine catalyst hydrochloride by heat filtering, reduced pressure distillation is carried out to remove the organic solvent, and crystal is washed by low carbon fatty alcohol, thus obtaining the antioxidant product with stable performance. The invention has the advantages of simple production technology, high product yield and good quality; and the obtained product has long time hydrolytic resistance, pyrolysis resistance and good oxidation resistance.
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Description

technical field

[0001] The invention relates to a process for preparing an antioxidant product with stable performance, in particular to a process for preparing tris(2,4-di-tert-butylphenyl)phosphite. Background technique

[0002] Antioxidant 168 product belongs to phosphorous acid antioxidant, chemical name: tris(2,4-di-tert-butylphenyl) phosphite, specifically refers to the following formula (I):

[0003]

[0004] Antioxidant 168 is an excellent phosphite antioxidant product, which is widely used in polymer materials such as synthetic rubber, polyolefin plastics, and engineering plastics. When it is used in conjunction with hindered phenolic primary antioxidants, it has a good synergistic effect and can effectively improve the processing stability, heat resistance stability, color improvement and weather resistance of polymer materials. It is a phosphite secondary antioxidant Mainstream varieties of agents.

[0005] The preparation process of antioxidant 168, in the p...

Claims

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