阅读说明：本技术 一种亚磷酸酯类抗氧化剂的制备方法及应用 (Preparation method and application of phosphite antioxidant ) 是由 王德龙 杜林忠 杨伟彦 于 2019-12-12 设计创作，主要内容包括：本发明提供一种亚磷酸酯类抗氧化剂的制备方法及应用,涉及抗氧化剂技术领域。该亚磷酸酯类抗氧化剂的制备方法,所述亚磷酸酯类抗氧化剂由以下重量份成分组成：4.6-二叔丁基苯酚20-24份、三氯化磷8-10份、异辛醇6-7份、石油醚50-60份、有机胺化合物4-5份、聚碳化二亚胺2-3份、表面活性剂2-4份、光稳定剂1-2份。通过使用4.6-二叔丁基苯酚、三氯化磷、异辛醇、石油醚、有机胺化合物、聚碳化二亚胺、表面活性剂与光稳定剂作为原料,使得制得的亚磷酸酯类抗氧化剂整体性能得到提高,加强了亚磷酸酯类抗氧化剂的抗水解能力以及稳定性,从而让亚磷酸酯类抗氧化剂的使用效果明显提升。(The invention provides a preparation method and application of phosphite antioxidants, and relates to the technical field of antioxidants. The preparation method of the phosphite antioxidant comprises the following steps: 20-24 parts of 4, 6-di-tert-butylphenol, 8-10 parts of phosphorus trichloride, 6-7 parts of isooctanol, 50-60 parts of petroleum ether, 4-5 parts of an organic amine compound, 2-3 parts of polycarbodiimide, 2-4 parts of a surfactant and 1-2 parts of a light stabilizer. By using 4.6-di-tert-butylphenol, phosphorus trichloride, isooctanol, petroleum ether, an organic amine compound, polycarbodiimide, a surfactant and a light stabilizer as raw materials, the overall performance of the prepared phosphite antioxidant is improved, the hydrolysis resistance and stability of the phosphite antioxidant are enhanced, and the use effect of the phosphite antioxidant is obviously improved.)

1. A preparation method of phosphite antioxidant is characterized in that: the phosphite antioxidant comprises the following components in parts by weight: 20-24 parts of 4, 6-di-tert-butylphenol, 8-10 parts of phosphorus trichloride, 6-7 parts of isooctanol, 50-60 parts of petroleum ether, 4-5 parts of an organic amine compound, 2-3 parts of polycarbodiimide, 2-4 parts of a surfactant and 1-2 parts of a light stabilizer;

the preparation of the phosphite antioxidant comprises the following steps:

s1, preparing 4, 6-di-tert-butylphenol, phosphorus trichloride, isooctanol, petroleum ether, an organic amine compound, polycarbodiimide, a surfactant and a light stabilizer as required;

s2, adding 4, 6-di-tert-butylphenol and petroleum ether into the reaction kettle, adding organic base serving as a catalyst, and uniformly raising the internal temperature of the reaction kettle;

s3, adding phosphorus trichloride into a reaction kettle, firstly stirring for 10-15min, then adjusting the internal temperature of the reaction kettle, continuing stirring for 30-40min, keeping the temperature for 30min, then adding isooctyl alcohol, an organic amine compound, polycarbodiimide, a surfactant and a light stabilizer, stirring for 1-2 h, and keeping the temperature for 2 h;

and S4, filtering the obtained solution, concentrating to obtain crystals, purifying the crystals, and finally drying to obtain the final product.

2. The method for preparing a phosphite antioxidant as set forth in claim 1, wherein: the internal temperature of the reaction kettle in the step 2 is 40-50 ℃.

3. The method for preparing a phosphite antioxidant as set forth in claim 1, wherein: the internal temperature of the reaction kettle in the step 3 is 80-90 ℃.

4. The method for preparing a phosphite antioxidant as set forth in claim 1, wherein: the phosphite antioxidant comprises the following components in parts by weight: 20 parts of 4, 6-di-tert-butylphenol, 8 parts of phosphorus trichloride, 6 parts of isooctyl alcohol, 50 parts of petroleum ether, 4 parts of an organic amine compound, 2 parts of polycarbodiimide, 2 parts of a surfactant and 1 part of a light stabilizer.

5. The preparation method and the application of the phosphite antioxidant as claimed in claim 1, wherein the phosphite antioxidant comprises the following components: the phosphite antioxidant comprises the following components in parts by weight: 22 parts of 4.6-di-tert-butylphenol, 9 parts of phosphorus trichloride, 6.5 parts of isooctyl alcohol, 55 parts of petroleum ether, 4.5 parts of an organic amine compound, 2.5 parts of polycarbodiimide, 3 parts of a surfactant and 1.5 parts of a light stabilizer.

6. The preparation method and the application of the phosphite antioxidant as claimed in claim 1, wherein the phosphite antioxidant comprises the following components: the phosphite antioxidant comprises the following components in parts by weight: 24 parts of 4, 6-di-tert-butylphenol, 10 parts of phosphorus trichloride, 7 parts of isooctyl alcohol, 60 parts of petroleum ether, 5 parts of an organic amine compound, 3 parts of polycarbodiimide, 4 parts of a surfactant and 2 parts of a light stabilizer.

7. The application of the phosphite antioxidant is characterized in that: the phosphite antioxidant is applied to PE, PP, PS, polyamide, polycarbonate and ABS.

Technical Field

The invention relates to the technical field of antioxidants, in particular to a preparation method and application of phosphite antioxidants.

Background

Along with the continuous improvement of environmental protection standards, the requirements on antioxidants are higher and higher, the development trend of phosphite antioxidants mainly comprises environmental protection, no toxicity, no phenol, hydrolysis resistance, specialization, high temperature resistance and the like, the phosphite antioxidants are also called as auxiliary antioxidants, the main function is to decompose hydroperoxide, the generation and accumulation of the hydroperoxide are the most critical steps for the degradation of organic polymer materials, and after the hydroperoxide with a certain concentration is generated, the free radical oxidation reaction is rapidly promoted, so that the phosphite antioxidants are very important for the inhibition of aging, and meanwhile, the phosphite antioxidants have good color protection capability and can improve the processing temperature of polymers.

At present, various preparation methods of phosphite antioxidants are available, and the types of prepared antioxidants are increasing, but the phosphite antioxidants prepared by many traditional preparation methods have poor overall performance, and the performance and the use effect of the phosphite antioxidants are required to be further improved.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a preparation method and application of a phosphite antioxidant, and solves the problems that the integral performance of phosphite antioxidants prepared by a plurality of traditional preparation methods is poor, and the performance and the use effect are required to be further improved.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a preparation method of phosphite antioxidants comprises the following components in parts by weight: 20-24 parts of 4, 6-di-tert-butylphenol, 8-10 parts of phosphorus trichloride, 6-7 parts of isooctanol, 50-60 parts of petroleum ether, 4-5 parts of an organic amine compound, 2-3 parts of polycarbodiimide, 2-4 parts of a surfactant and 1-2 parts of a light stabilizer;

the preparation of the phosphite antioxidant comprises the following steps:

s1, preparing 4, 6-di-tert-butylphenol, phosphorus trichloride, isooctanol, petroleum ether, an organic amine compound, polycarbodiimide, a surfactant and a light stabilizer as required;

s2, adding 4, 6-di-tert-butylphenol and petroleum ether into the reaction kettle, adding organic base serving as a catalyst, and uniformly raising the internal temperature of the reaction kettle;

s3, adding phosphorus trichloride into a reaction kettle, firstly stirring for 10-15min, then adjusting the internal temperature of the reaction kettle, continuing stirring for 30-40min, keeping the temperature for 30min, then adding isooctyl alcohol, an organic amine compound, polycarbodiimide, a surfactant and a light stabilizer, stirring for 1-2 h, and keeping the temperature for 2 h;

and S4, filtering the obtained solution, concentrating to obtain crystals, purifying the crystals, and finally drying to obtain the final product.

Preferably, the internal temperature of the reaction kettle in the step 2 is 40-50 ℃.

Preferably, the internal temperature of the reaction kettle in the step 3 is 80-90 ℃.

Preferably, the phosphite antioxidant comprises the following components in parts by weight: 20 parts of 4, 6-di-tert-butylphenol, 8 parts of phosphorus trichloride, 6 parts of isooctyl alcohol, 50 parts of petroleum ether, 4 parts of an organic amine compound, 2 parts of polycarbodiimide, 2 parts of a surfactant and 1 part of a light stabilizer.

Preferably, the phosphite antioxidant comprises the following components in parts by weight: 22 parts of 4.6-di-tert-butylphenol, 9 parts of phosphorus trichloride, 6.5 parts of isooctyl alcohol, 55 parts of petroleum ether, 4.5 parts of an organic amine compound, 2.5 parts of polycarbodiimide, 3 parts of a surfactant and 1.5 parts of a light stabilizer.

Preferably, the phosphite antioxidant comprises the following components in parts by weight: 24 parts of 4, 6-di-tert-butylphenol, 10 parts of phosphorus trichloride, 7 parts of isooctyl alcohol, 60 parts of petroleum ether, 5 parts of an organic amine compound, 3 parts of polycarbodiimide, 4 parts of a surfactant and 2 parts of a light stabilizer.

The application of the phosphite antioxidant in PE, PP, PS, polyamide, polycarbonate and ABS is provided.

(III) advantageous effects

The invention provides a preparation method and application of phosphite antioxidant. The method has the following beneficial effects:

1. by using 4.6-di-tert-butylphenol, phosphorus trichloride, isooctanol, petroleum ether, an organic amine compound, polycarbodiimide, a surfactant and a light stabilizer as raw materials, the overall performance of the prepared phosphite antioxidant is improved, the hydrolysis resistance and stability of the phosphite antioxidant are enhanced, and the use effect of the phosphite antioxidant is obviously improved.

2. By optimizing the preparation process, the preparation time of the phosphite antioxidant is shortened, a large amount of time and labor are saved, and the production cost is reduced.

Detailed Description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.