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Method for preparing environment-friendly plasticizer from waste grease and application of method

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

Active Publication Date: 2019-12-31
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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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  • Method for preparing environment-friendly plasticizer from waste grease and application of method
  • Method for preparing environment-friendly plasticizer from waste grease and application of method
  • Method for preparing environment-friendly plasticizer from waste grease and application of method

Examples

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 from waste grease and an application of the method, and belongs to the field of fine chemical synthesis and plastic additive application. According to the invention, higher fatty acid purified from waste grease, methanol, 50% hydrogen peroxide, trimellitic anhydride and acetic anhydride are adopted as main raw materials, and molecular structure modification and functional group conversion are carried out through four steps of reactions comprising esterification, epoxidation, ring-opening esterification and acetylation, so that the environment-friendly plasticizer product acetyl fatty acid methyl ester-triphenyl trimellitate is prepared. The environment-friendly plasticizer product prepared by the method hasthe characteristics of combination of cyclic molecules and linear molecules, is moderate in viscosity, yellow in color and relatively good in migration resistance and heat resistance, is suitable forindustrial production, and is expected to replace traditional phthalate 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 Applications(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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