Method for preparing modified liquid metal soap thermal stabilizer through potassium ion characteristic doping

A liquid metal and heat stabilizer technology, applied in the preparation of carboxylate, can solve the problems of poor stability and compatibility, complex production process, deep color and so on, and achieve the effect of high thermal stability, process safety and high quality

Active Publication Date: 2012-10-24
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a PVC liquid metal soap heat stabilizer doped with potassium ions and its preparation method. The heat stabilizer has high efficiency and environmental protection, simple operation, low production cost, safe process, excellent thermal stability and foaming performance , overcame the disadvantages of complex production process, poor stability and compatibility, deep color, high cost and potential toxicity and production technology defects of heat stabilizers in the traditional field, and opened up a new field of research and development of non-toxic and environmentally friendly liquid heat stabilizers

Method used

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  • Method for preparing modified liquid metal soap thermal stabilizer through potassium ion characteristic doping
  • Method for preparing modified liquid metal soap thermal stabilizer through potassium ion characteristic doping

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Add 43.2g of isooctanoic acid and 26.8g of p-tert-butylbenzoic acid successively into a 250mL three-necked flask, heat up to 90°C under constant stirring, control the reaction temperature at 90°C, add 14.0g of solid potassium hydroxide in batches until the reaction is complete, The solution became clear, and the water was distilled under reduced pressure; 32.6g of zinc oxide powder was added in batches, and the temperature was controlled at 80°C to react for 1 hour. A yellowish transparent oily liquid was obtained, which was sealed and stored.

Embodiment 2

[0024] Add 28.8g of isooctanoic acid and 17.0g of p-tert-butylbenzoic acid in sequence in a 250mL three-necked flask, heat up to 100°C under constant stirring, control the reaction temperature at 100°C, add 16.6g of potassium hydroxide in batches, and react for 2 hours under temperature control. After the reaction is complete, carry out vacuum distillation and dehydration; stop the distillation after the anhydrous comes out and lower the temperature to 80°C, add 28.5g of liquid Ca / Zn composite heat stabilizer and 30g of triethylene glycol, continue to control the temperature and stir for 10 minutes, and then carry out decompression Suction filtration to obtain a light yellow transparent oily liquid, which is sealed and stored.

Embodiment 3

[0026] Add 14.2g of isooctanoic acid and 17.5g of p-tert-butylbenzoic acid in sequence in a 250mL three-necked flask, heat up to 90°C under constant stirring, control the reaction temperature at 90°C, add 11.0g of potassium hydroxide in batches, and react for 2 hours under temperature control. After the reaction is complete, carry out vacuum distillation and dehydration; stop the distillation after the anhydrous comes out and lower the temperature to 80°C, add 25.0g of liquid Mg / Zn composite heat stabilizer and 24g of odorless kerosene, continue to control the temperature and stir for 10min, then carry out vacuum pumping Filter to obtain a golden yellow transparent oily liquid, which is sealed and stored.

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Abstract

The invention relates to a method for preparing a modified liquid metal soap thermal stabilizer through potassium ion characteristic doping, belonging to the technical fields of fine chemical engineering and high molecular material application. The invention researches and develops a potassium-ion-doped PVC (polyvinyl chloride) liquid metal soap thermal stabilizer. The synthesis method of the thermal stabilizer comprises the following steps: adding composite organic acid into a three-neck flask, stirring, and heating to 90-100 DEG C; adding solid potassium hydroxide in batches; after the reaction is complete, performing reduced-pressure distillation to dewater; cooling to 80 DEG C, then adding a liquid metal soap and a solvent, and continuously stirring to react; and finally, performing reduced-pressure filtration to obtain a yellowish transparent oily liquid. By utilizing the fact that metal potassium salt has fine long-term thermal stability, produces an obviously strong inhibition effect on zinc burning and has obvious cooperativity with other metal salt, the potassium-ion-doped PVC liquid metal soap thermal stabilizer is directly prepared through a solid-liquid one-step reaction method. The thermal stabilizer has the advantages of low cost, no toxicity, environment friendliness, simple process, fine performance, light appearance color and the like, and is easy to popularize and apply.

Description

technical field [0001] The invention discloses a method for preparing a heat stabilizer doped with a modified liquid metal soap utilizing the properties of potassium ions, in particular to a PVC liquid heat stabilizer doped with potassium ions and its preparation method, belonging to fine chemical industry and polymer material application technology field. Background technique [0002] Polyvinyl chloride (PVC) is the largest synthetic resin in my country and the second largest in the world. It has the advantages of low price, flame retardant, corrosion resistance, good transparency, and good electrical insulation. However, the biggest disadvantage of PVC is poor thermal stability. Certain heat stabilizers must be added in PVC processing and production to improve performance. At present, the industrialized PVC heat stabilizers in the world mainly include lead salts, mixed metal salts, organic tin, organic antimony, organic auxiliary heat stabilizers, and rare earths. The la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K5/098C07C51/41
Inventor 蒋平平刘朋
Owner JIANGNAN UNIV
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