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Technology for producing anti oxidant by solid acid process

A technology of antioxidant and solid acid, which is applied in the field of new technology for producing antioxidant by solid acid method, can solve the problems of reduced antioxidant performance, unsuitable antioxidant, negative reaction, etc., and achieves improved antioxidant performance, Increase the value-added of products and reduce the cost of products

Inactive Publication Date: 2003-07-23
盘锦市光华科技工贸公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, using sulfuric acid as a catalyst to produce antioxidant SP not only has a complicated process and high cost, but also negative reactions will occur to generate acetophenone. Due to the high content of impurities in this process, especially acetophenone has photodegradation effect, resulting in low oxidation resistance. Reduced, can only be used for light-colored or transparent rubber products, not suitable as an antioxidant for impact-resistant polystyrene, which limits its scope of use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The new process of producing antioxidants by solid acid method is to indirectly heat phenol into liquid by electric heating water method, take 100kg of phenol liquid, use a vacuum pump to input phenol under negative pressure in the reaction kettle, and then add 18kg of catalyst activated clay into the reaction kettle , after stirring for 5 minutes, the temperature of the reaction kettle was raised, and when the temperature of the material in the kettle was raised to 125°C, 200kg of styrene was added dropwise to the reaction kettle through the styrene dropping pump, and the reaction temperature was controlled at 120-16°C, and the alkylation reaction was completed Finally, the quality is qualified by sampling and testing. It is filtered by the feeding pump and input into the filter press to separate the catalyst and solid impurities, and the finished product is obtained. The trade name is antioxidant IPS-SP, which can also be called anti-aging polystyrene agent.

Embodiment 2

[0032] The new process of producing antioxidants by solid acid method is to use steam heating water method to indirectly heat phenol into liquid, then take 100kg of phenol liquid, use the drum dumper to introduce liquid phenol into the reaction kettle, and then add 20kg of active For white clay, after stirring for 5 minutes, the temperature of the reaction kettle is raised. When the temperature of the material in the kettle is raised to 130°C, styrene is added dropwise into the reaction kettle through the elevated tank, and the reaction temperature is controlled at 120-160°C. After the alkylation reaction is completed, take a sample for detection The quality is qualified, and it is filtered by the feeding pump into the filter. The catalyst and solid impurities are separated to obtain the finished product.

[0033] A small amount of ultraviolet absorber UV531 and light stabilizer 770 can be added to this product, which can further improve the quality and performance of the prod...

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Abstract

A process for preparing antioxidizing agent by solid acid method is prepared through heating phenol crystal to become liquid, proportionally adding it and active argil as catalyst into reactor, stirring for 5-8 min, heating to 120-140 deg.C, dropping styrene, alkylation reaction at 120-160 deg.C, and filtering to remove active argil and solid impurities. Its advantages are simple process, no pollution and high purity.

Description

(1) Technical field [0001] The invention relates to an antioxidant production method, in particular to an antioxidant production method using activated clay as a catalyst. (2) Background technology [0002] At present, the production of antioxidant SP uses sulfuric acid, a strong oxidizing agent, as a catalyst, so after the reaction, it is necessary to add waste liquid treatment processes such as alkali neutralization and sedimentation separation. Therefore, using sulfuric acid as a catalyst to produce antioxidant SP not only has a complicated process and high cost, but also negative reactions will occur to generate acetophenone. Due to the high content of impurities in this process, especially acetophenone has photodegradation effect, resulting in low oxidation resistance. It can only be used for light-colored or transparent rubber products, and it is not suitable as an antioxidant for impact-resistant polystyrene, which limits its scope of use. (3) Contents of the invent...

Claims

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Application Information

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IPC IPC(8): C09K15/08
Inventor 胡凤臣辛承德曲国志马建羽
Owner 盘锦市光华科技工贸公司
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