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A method for compound antioxidant granulation

A composite antioxidant and granulation technology, applied in the chemical industry, can solve the problems of ineffectiveness, decomposition, and inability to achieve expected effects of composite antioxidants, achieve a safe and reliable production environment, reduce dust, and improve production efficiency and economic benefits.

Active Publication Date: 2021-03-16
JIANGSU JIYI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the traditional method is used for granulation, some antioxidants are decomposed due to the high melting temperature, which makes the composite antioxidant ineffective and cannot achieve the expected effect

Method used

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  • A method for compound antioxidant granulation
  • A method for compound antioxidant granulation
  • A method for compound antioxidant granulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The mass ratio screening embodiment of screening embodiment 1 organic solvent and main raw material:

Embodiment 1-1

[0018] A method for granulating a composite antioxidant. The composite antioxidant is prepared from a main antioxidant, an auxiliary antioxidant, an acid absorbing agent, and an auxiliary agent as main raw materials, and the steps are as follows:

[0019] (1) In the stirred tank, add 58.45g (67.97ml) xylene, then add 22.13g antioxidant 1098, 3.45g antioxidant 168, 11.8g calcium stearate, 2.91g antistatic agent, 1.46g Stir the nucleating agent at a speed of 800-1200rpm until it is completely dissolved, stir and mix evenly, and the stirring time is 10-15min to obtain a liquid mixture;

[0020] (2) After mixing evenly, the liquid mixture in the above step (1) is filtered through a sieve with sieve holes of 20-50 μm to obtain the mixture liquid;

[0021] (3) The mixture liquid in the above step (2) is sprayed and granulated through the air-flow pressure spray granulation tower, and the spherical particles are obtained by spraying. ℃, feed rate is 15ml / min, air flow rate is 0.5m ...

Embodiment 1-2

[0023] A method for granulating a composite antioxidant. The composite antioxidant is prepared from a main antioxidant, an auxiliary antioxidant, an acid absorbing agent, and an auxiliary agent as main raw materials, and the steps are as follows:

[0024] (1) In the stirred tank, add 62.63g (72.83ml) xylene, then add 22.13g antioxidant 1098, 3.45g antioxidant 168, 11.8g calcium stearate, 2.91g antistatic agent, 1.46g Stir the nucleating agent at a speed of 800-1200rpm until it is completely dissolved, stir and mix evenly, and the stirring time is 10-15min to obtain a liquid mixture;

[0025] The step (2) and step (3) of this screening example are exactly the same as the step (2) and step (3) of the screening example 1-1.

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Abstract

The invention discloses a method for granulating a composite antioxidant. The composite antioxidant is mainly prepared from a main antioxidant, an auxiliary antioxidant, an acid acceptor and an assistant. The method concretely comprises the following steps: (1) adding the main antioxidant, the auxiliary antioxidant, the acid acceptor and the assistant to an organic solvent, performing stirring until all above main raw materials are completely dissolved, and continuously performing stirring to achieve uniform mixing in order to obtain a liquid mixture; (2) filtering the liquid mixture after theuniform mixing to obtain a mixed feed liquid; and (3) carrying out spray granulation on the mixed feed liquid by a pneumatic pressure spray granulation tower to obtain spherical particles which are agranulated composite antioxidant. The antioxidant and the assistant are uniformly mixed in the organic solvent, and the antioxidant undergoes spraying granulation at a low temperature by adopting thepneumatic pressure spray granulation tower, so the antioxidant is prevented from decomposing due to too high hot melt temperature, thereby the production efficiency and the production quality of thecomposite antioxidant are improved.

Description

technical field [0001] The invention relates to a method for granulating a composite antioxidant, which belongs to the technical field of chemical industry. Background technique [0002] Antioxidants are indispensable additives in the production and processing of polymers. Without antioxidants, polymers will undergo rapid oxidative degradation during processing and use. Antioxidants can help polymers overcome the above problems. Using one class of antioxidants alone is simple to prepare, easy to use, and can play an antioxidant role, but there are certain limitations, and it is difficult to meet the multi-faceted performance requirements of high-molecular organic compounds. There is a synergistic effect between different antioxidants, which is effective It is a system to prevent thermal and oxidative aging of polymers. At the same time, it can also compound antioxidants and additives with certain functions to effectively improve the excellent physical and mechanical propert...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/00C08K5/526C08K5/20C08K5/098B01J2/04
CPCB01J2/04C08K5/005C08K5/098C08K5/20C08K5/526
Inventor 郭骄阳赵崇鑫
Owner JIANGSU JIYI NEW MATERIAL CO LTD
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