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A kind of method and application of using waste oil to prepare environment-friendly plasticizer

An environmentally friendly plasticizer and waste oil technology, which is applied in the preparation of carboxylate, chemical instruments and methods, preparation of organic compounds, etc., can solve problems such as environmental pollution, and achieve the effects of good compatibility and excellent migration resistance.

Active Publication Date: 2021-11-12
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Waste oil is an inedible low-quality oil that will cause serious environmental pollution if it is directly discharged as waste

Method used

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  • A kind of method and application of using waste oil to prepare environment-friendly plasticizer
  • A kind of method and application of using waste oil to prepare environment-friendly plasticizer
  • A kind of method and application of using waste oil to prepare environment-friendly plasticizer

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation of embodiment 1 environmental protection plasticizer product acetyl fatty acid methyl ester-trimellitate

[0027] The reaction process is as follows:

[0028]

[0029] .

[0030] The specific steps are:

[0031] (1) Pretreatment of waste oil: first filter the waste oil at 10-30°C; then add activated clay for decolorization, the mass ratio of activated clay to oil is 1:20-40; add phosphoric acid and water For degumming, the mass of phosphoric acid added is 0.1% to 0.4% of the mass of the oil, and the mass of water added is 1% to 4% of the mass of the oil, and then washed with deionized water until neutral. Distill water under vacuum; then add methanol and sodium hydroxide solution for transesterification reaction, the molar ratio of oil and methanol is 1:3-8, the mass of sodium hydroxide is 0.3%-0.8% of the total mass, and the reaction temperature is 50~70℃, react for 4~8h, wash with deionized water until neutral, then distill under reduced pressu...

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Abstract

The invention discloses a method for preparing an environment-friendly plasticizer by using waste oil and its application, and belongs to the field of fine chemical synthesis and application of plastic additives. The present invention adopts higher fatty acid purified from waste oil, methanol, 50% hydrogen peroxide, trimellitic anhydride and acetic anhydride as main raw materials, and carries out molecular structure modification and The functional group is converted to obtain an environmentally friendly plasticizer product, acetyl fatty acid methyl ester-trimellitate. The environmentally friendly plasticizer product prepared by the present invention has the characteristics of a combination of cyclic molecules and linear molecules, the product has moderate viscosity, yellow color, good migration resistance and heat resistance, is suitable for industrial production, and is expected to replace traditional o-phthalic acid class of plasticizers.

Description

technical field [0001] The invention relates to a method for preparing an environment-friendly plasticizer by using waste oil and its application, and belongs to the fields of synthesis of fine chemicals and application of plastic additives. Background technique [0002] The annual consumption of plasticizers in my country is about 5 million tons, of which 75% of PVC plasticizers are o-phthalic plasticizers, and they are completely derived from petroleum. In addition, as time goes by, phthalic plasticizers are easy to migrate out of the PVC matrix, and the migrated phthalic plasticizers will act as endocrine disruptors to poison the liver, heart, kidney, lung, testis and human body. of other organs. Therefore, they have been banned by the European Union, the United States and many other countries in some specific fields, such as children's toys, medical equipment, automobiles, food packaging and some indoor materials, etc. It is imperative to develop some new structures an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C67/26C07C67/29C07C69/76C07C67/08C07C69/58C07D301/12C07D303/42C08K5/12C08L27/06C08J5/18
CPCC07C67/08C07C67/26C07C67/29C07D301/12C07D303/42C08J5/18C08J2327/06C08J2427/06C08K5/12C07C69/58C07C69/76
Inventor 蒋平平刘德开王涵颖聂志欣代注顶
Owner JIANGNAN UNIV
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