Preparation method of environment-friendly thermal stabilizing agent

A heat stabilizer, environmentally friendly technology, used in the plastics industry, can solve the problems of poor coloring, environmental pollution, etc., and achieve the effect of improving coloring effect, good compatibility and improving stability

Inactive Publication Date: 2017-12-15
戴琪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention: Aiming at the problem that the heat stabilizer used in our country is easy to pollute the environment and the initial coloring property is not good, a preparation method of an environment-friendly heat stabilizer is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] In parts by weight, get 6 parts of castor oil, 3 parts of soybean oil, 1.5 parts of maleic anhydride and 3 parts of methyl ethyl ketone, add castor oil and soybean oil to a tank equipped with a thermometer, constant pressure dropping funnel, stirrer and reflux condensing Place the four-necked flask in a water bath, adjust the temperature at 55°C and preheat it for 5 minutes; pour maleic anhydride into methyl ethyl ketone, and add the obtained mixture to the constant pressure dropping funnel , dropwise into the four-necked flask at a speed of 30mL / min, after the dropwise addition, the temperature of the water bath was controlled at 75°C, stirred at a speed of 200r / min for 3h, and the solvent was removed in a vacuum to obtain a modified mixed oil; Pour the modified mixed oil into a three-necked flask equipped with a stirrer, a thermometer and a constant pressure dropping funnel, pour 50% of the modified mixed oil into formic acid, 20% of the modified mixed oil in dibenzoyl...

example 2

[0027]In parts by weight, get 7 parts of castor oil, 3 parts of soybean oil, 1.8 parts of maleic anhydride and 3 parts of methyl ethyl ketone, add soybean oil and castor oil to a tank equipped with a thermometer, constant pressure dropping funnel, stirrer and reflux condensing Place the four-necked flask in a water bath, adjust the temperature at 60°C and preheat for 8 minutes; pour maleic anhydride into methyl ethyl ketone, and add the obtained mixture to the constant pressure dropping funnel , dropwise into the four-neck flask at a speed of 30mL / min, after the dropwise addition, the temperature of the water bath was controlled at 78°C, stirred at a speed of 240r / min for 3h, and the solvent was removed in a vacuum to obtain a modified mixed oil; Pour the modified mixed oil into a three-necked flask equipped with a stirrer, a thermometer and a constant pressure dropping funnel, pour 50% of the modified mixed oil into formic acid, 20% of the modified mixed oil in dibenzoylmethan...

example 3

[0029] In parts by weight, take 8 parts of castor oil, 4 parts of soybean oil, 2.0 parts of maleic anhydride and 4 parts of methyl ethyl ketone, and add castor oil and soybean oil to a tank equipped with a thermometer, constant pressure dropping funnel, stirrer and reflux condensing Place the four-necked flask in a water bath, adjust the temperature at 65°C and preheat it for 10 minutes; pour maleic anhydride into methyl ethyl ketone, and add the obtained mixture to the constant pressure dropping funnel , dropwise into the four-neck flask at a speed of 30mL / min, after the dropwise addition, the temperature of the water bath was controlled at 80°C, stirred at a speed of 280r / min for 4h, and the solvent was removed in a vacuum to obtain a modified mixed oil; Pour the modified mixed oil into a three-necked flask equipped with a stirrer, a thermometer and a constant pressure dropping funnel, pour 50% of the modified mixed oil into formic acid, 20% of the modified mixed oil in diben...

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PUM

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Abstract

The invention relates to preparation of an environment-friendly thermal stabilizing agent, and belongs to the technical field of plastic industry. Castor oil and soybean oil are taken and are added into a four-opening flask; the flask is put into a water bath pot; preheating is performed; maleic anhydride is taken and is poured into methyl ethyl ketone; the obtained mixed liquid is dripped into the flask; after the dripping is completed, the temperature is controlled; stirring is performed; solvents are removed in a vacuum way; modified mixed oil is obtained; the modified mixed oil is poured into a three-opening flask; formic acid, dibenzoyl methane and pentaerythritol are poured; a hydrogen peroxide solution is dripped into the flask; the temperature is regulated; the rotating speed is regulated; after the reaction, still standing and cooling are performed to the room temperature; layering is performed; upper layer oily materials are obtained; sodium hydroxide solution is heated; the upper layer oily materials are dripped into the sodium hydroxide solution; stirring is performed; emulsion is obtained; a zinc oxide solution is added into the emulsion; stirring is performed; products are filtered; filter slag is washed by distilled water and is then put into a baking oven to be baked; the environment-friendly thermal stabilizing agent is obtained.

Description

technical field [0001] The invention relates to a preparation method of an environment-friendly heat stabilizer, which belongs to the technical field of plastic industry. Background technique [0002] Polyvinyl Chloride (PVC) is a polymer synthetic material. Due to its good physical and chemical properties, it has become the third largest general-purpose resin in the world after polyethylene (PE) and polypropylene (PP). . The physical and chemical structure of PVC makes it unique in the polymer world. Industrial-grade PVC is obtained by free radical polymerization of vinyl chloride under the action of an initiator. It is a white powder with an amorphous structure and a small degree of branching. The molecular weight of PVC increases as the polymerization temperature decreases, generally in the range of 50,000-120,000, and has a large polydispersity. [0003] The PVC industry has a long history. During World War II, the U.S. Navy used thousands of kilometers of rubber-coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/00C08K13/02C08K5/07C08K3/16C08K5/053
CPCC08L91/00C08K2003/168C08L2201/08C08L2205/025C08K13/02C08K5/07C08K3/16C08K5/053
Inventor 戴琪赵宝陈倩
Owner 戴琪
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