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High efficiency liquid phase chromatographic analysis method for 2-benzotrinitrozole-4,6-diiso propyl phenol content in nylon 66

A benzotriazole-based, high-performance liquid chromatography technology, applied in the field of high-performance liquid chromatography analysis, to achieve good reproducible results

Inactive Publication Date: 2007-06-27
SHANGHAI CHEM REAGENT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, there is no report on the analysis of the content of the anti-ultraviolet agent 2-benzotriazolyl 4,6-dicumylphenol in nylon 66

Method used

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  • High efficiency liquid phase chromatographic analysis method for 2-benzotrinitrozole-4,6-diiso propyl phenol content in nylon 66

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Determination of 2-benzotriazolyl-4,6-dicumylphenol content in nylon 66 particles of embodiment 1

[0030] 1 material

[0031] 1.1 Instruments and materials

[0032] HP1100 Liquid Chromatograph-G1212A; HP Autosampler-G1213A; HP UV Detector-G1215A; C 18 Liquid chromatography column (column diameter 4.6mm, column length 150mm, particle diameter 5μm); 500ml reactor with heating, mechanical stirring, thermometer, and dropping device; 1 / 10,000 electronic balance.

[0033] 1.2 Drugs and reagents

[0034] Phenols dissolving agent and alcohols eluting agent are analytically pure; methanol is chromatographically pure; water is ultrapure water; .

[0035] 1.3 Standard stock solution

[0036] Accurately weigh 0.1448 g of 2-benzotriazolyl-4,6-dicumylphenol standard substance, place it in a 100 ml volumetric flask, dissolve it with absolute ethanol, and accurately dilute to the mark to prepare The ethanol solution with a content of 1.448mg / ml is the standard solution. Dilute ...

Embodiment 2

[0056] Determination of 2-benzotriazolyl-4,6-dicumylphenol content in nylon 66 screen crumbs of embodiment 2

[0057] 1. Medicines, reagents and instrument materials are the same as in Example 1.

[0058] 2. Sample pretreatment:

[0059]2.1. Add 100ml of phenol into a 500ml reactor equipped with heating, mechanical stirring, thermometer, and dropping device, add 4.92g of accurately weighed nylon 66 wire mesh granules, stir to raise the temperature, and stir at 77±3°C Dissolve for 2.0 hours to make it fully dissolved, and after it is completely dissolved, cool it for later use.

[0060] 2.2. Add 200ml of ethanol to a 500ml three-neck flask equipped with a stirring and dropper, stir at room temperature, and drop in the solution obtained in step 2.1.1 within 1 hour, and a white flocculent precipitate of nylon 66 is precipitated, and continue stirring for 10 minutes , stand still, filter to remove the filter residue, obtain filtrate 282ml, as the sample solution for analysis and...

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Abstract

The invention uses lytic agent in phenols to dissolve product of nylon 66. After separating agent in alcohols separates nylon 66 out from dissolution liquid, alcoholic solution of containing 2-benzotriazol-4, 6- phenol diisopropyl benzene is obtained. Using high performance liquid chromatography analyzes content of 2-benzotriazol-4, 6- phenol diisopropyl benzene in product of nylon 66. The invention can pick up agent of anti ultraviolet of 2-benzotriazol-4, 6- phenol diisopropyl benzene from product of nylon 66 conveniently. Features are: good reproducibility of high performance liquid chromatography analysis, and suitable to control quality of product of nylon 66.

Description

technical field [0001] The invention relates to a high performance liquid chromatography analysis method for the content of anti-ultraviolet agent 2-benzotriazolyl-4,6-dicumyl phenol in nylon 66. Background technique [0002] In the processing and manufacturing of polymer material products, in order to meet the needs of different purposes, various additives are added, such as antioxidants, anti-ultraviolet agents, antistatic agents, etc., to enhance the anti-oxidation, anti-ultraviolet, and anti-static properties of the products. 2-Benzotriazolyl-4,6-dicumyl phenol is an anti-ultraviolet agent, which is widely used in polymer materials such as nylon 66. Usually, the content of anti-ultraviolet agent in nylon 66 is determined by the input amount of anti-ultraviolet agent in the process of processing. Due to the heat volatilization and thermal decomposition in the process of processing, the content of anti-ultraviolet agent in nylon 66 is reduced, which directly affects the qu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
Inventor 何扣宝王中文钱柯君顾月萍
Owner SHANGHAI CHEM REAGENT RES INST
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