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Epoxy low-polyether glyceride plasticizer and preparation method thereof

A technology of glyceride and oligoether, which is applied in the field of epoxy oligoether glyceride plasticizer and its preparation, can solve the problems of low molecular weight and easy migration, achieve high flash point, control the degree of polymerization, and high resistance to migration Effect

Active Publication Date: 2021-06-15
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the defects of low molecular weight and easy migration of existing epoxy fatty acid methyl esters and epoxy grease plasticizers, and avoid high polymerization of glycerin
The invention provides an epoxy oligoether glyceride plasticizer and a preparation method thereof

Method used

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  • Epoxy low-polyether glyceride plasticizer and preparation method thereof
  • Epoxy low-polyether glyceride plasticizer and preparation method thereof
  • Epoxy low-polyether glyceride plasticizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Raw materials: soybean oil, glycerin, sodium hydroxide, formic acid, hydrogen peroxide, concentrated sulfuric acid;

[0025] Soybean oil and glycerin are mixed in a ratio of 2:1 and put into the reactor, adding sodium hydroxide accounting for 1% of the raw oil mass, heating up to 190°C under nitrogen protection, and reflux reaction for 8 hours; then add 0.5 % of the catalyzer, use a distillation unit instead and increase the reaction temperature to 250°C for etherification to produce anhydrous. At this time, the product is a mixture rich in monoether glycerides and diether glycerides (if etherified Not completely can be blocked with acetic anhydride, the same below); After conventional operations such as neutralization and water washing, add formic acid accounting for 10% to 50% of the mass of oligoether glycerides and concentrated sulfuric acid accounting for 0.5% to 1% by mass, Heating to 40-60°C, adding 0.9-1.4 times of hydrogen peroxide dropwise, finishing the dripp...

Embodiment 2

[0027] Raw materials: rapeseed oil, glycerin, potassium hydroxide, 3-chloroperoxybenzoic acid, dichloromethane;

[0028] Rapeseed oil and glycerin are mixed and put into the reactor according to the ratio of the amount of substances of 1.6:1, adding potassium hydroxide accounting for 1.2% of the mass of the raw oil, heating up to 180°C under the protection of nitrogen, and refluxing for 10 hours; then adding 0.6% catalyst, use a distillation device instead and increase the reaction temperature to 250 ° C to produce anhydrous etherification. At this time, the product is a mixture rich in monoether glycerides and diether glycerides; After conventional operations such as mixing and washing with water, add the methylene chloride solution of 3-chloroperoxybenzoic acid dropwise at room temperature. Epoxy oligoether glyceride products can be obtained through other processes.

Embodiment 3

[0030] Raw materials: catalpa oil, glycerin, potassium hydroxide, formic acid, hydrogen peroxide, p-toluenesulfonic acid;

[0031] Catalpa oil and glycerin are mixed according to the ratio of the amount of substances to 3:2 and put into the reactor, adding potassium hydroxide accounting for 1.5% of the mass of the raw oil and fat, heating up to 190°C under the protection of nitrogen, and refluxing for 9 hours; then adding 1 % of the catalyst, use a distillation device instead and increase the reaction temperature to 245°C for etherification to produce anhydrous. At this time, the product is a mixture rich in monoether glycerides and diether glycerides; After conventional operations such as washing with water, add formic acid accounting for 10% to 50% of the mass of oligoether glyceride and p-toluenesulfonic acid accounting for 0.5% to 1% by mass, and add 0.9 to 1.4 times of hydrogen peroxide dropwise when heated to 40 to 60°C , drop it within 40 minutes, then raise the tempera...

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Abstract

The invention relates to an epoxy low-polyether glyceride plasticizer and a preparation method thereof. Grease, glycerol, peroxide, and formic acid or acetic acid are used as raw materials. The preparation method comprises the following steps: firstly, reacting grease with glycerol in the presence of a basic catalyst to prepare di-fatty glyceride or mono-fatty glyceride, then heating and dehydrating to synthesize a mixture rich in mono-ether glyceride and di-ether glyceride, and finally epoxidizing the mixture to obtain the epoxy low-polyether glyceride plasticizer. According to the novel grease-based epoxy plasticizer, the average molecular weight of the epoxy grease plasticizer can be effectively improved, so that the flash point of the plasticizer is improved, and a plasticized product has lower volatility and migration resistance, and the product has better durability.

Description

technical field [0001] The invention relates to an epoxy oligoether glyceride plasticizer and a preparation method thereof, and belongs to the fields of oil chemical utilization and plastic processing aids. Background technique [0002] Plasticizer (plasticizer) is an additive added during the molding and processing of high polymers such as plastics and rubber. Its main purpose is to increase the fluidity and plasticity of high polymers and make the finished product flexible. It is one of the indispensable additives in the processing of hard plastics. It is used in a huge amount, accounting for about 60% of plastic additives, and my country is already the world's largest producer and consumer of plasticizers. Among them, phthalates (DOP, etc.) account for the vast majority of plasticizer production. However, studies have long shown that DOP and other phthalic acid plasticizers have potential carcinogenicity and estrogenic effects, which are extremely harmful to organisms an...

Claims

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Application Information

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IPC IPC(8): C08K5/1515
CPCC08K5/1515C08K2201/014
Inventor 李科陈洁聂小安蒋剑春黄金瑞
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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