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Method for preparing chloro-epoxy fatty acid methyl ester plasticizer

A technology of chlorinated epoxy fatty acid methyl ester and substituted epoxy fatty acid methyl ester, which is applied in the field of preparation of plasticizers for organic chemical products, and can solve problems such as poor compatibility, high production cost, and limited addition amount

Inactive Publication Date: 2011-01-19
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of plasticizer has the following two deficiencies: ①Using vegetable oil as raw material, the production cost is relatively high
②This type of plasticizer has poor compatibility with plastics such as PVC (polyvinyl chloride), and can only be used as a secondary plasticizer for PVC in conjunction with phthalate plasticizers such as DOP, and the addition amount is limited. Generally, the amount added to PVC is only 1-5%.
There is no report about the biodiesel with fatty acid methyl ester as the main component as the main raw material through epoxidation, and then chlorination to prepare chlorinated epoxy plastic plasticizers

Method used

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  • Method for preparing chloro-epoxy fatty acid methyl ester plasticizer
  • Method for preparing chloro-epoxy fatty acid methyl ester plasticizer
  • Method for preparing chloro-epoxy fatty acid methyl ester plasticizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: According to the weight ratio of raw materials, in a 1000-liter glass-lined stirred reactor, add 500 kg of biodiesel with an iodine value of 86.5 and 50 kg of acetic acid respectively, heat up to 45° C. under stirring, and stop heating for use.

[0028] Add 200 kg of hydrogen peroxide liquid with a mass percentage of 36% into the hydrogen peroxide metering and dropping tank, and slowly add the hydrogen peroxide liquid into a 1000-liter glass-lined stirring reactor under stirring conditions, and control the reaction temperature to 55 ° C, 2.5 After the hydrogen peroxide has been added within 1 hour, the material in the stirring reactor is then insulated and stirred for 2 hours, so that the epoxidation reaction in the kettle is fully and thoroughly obtained, and the epoxy intermediate product crude product (epoxy fatty acid methyl ester crude product) is obtained. Obtain epoxy intermediate product (epoxy fatty acid methyl ester) 505kg after separation, washin...

Embodiment 2

[0030] Embodiment 2: produce 25% acetic acid aqueous solution 70kg in embodiment 1 and mix with raw material acetic acid 35kg, and add in the glass-lined stirred reactor of 1000L together with the 500kg biodiesel of iodine number 85, other operation steps and technical control parameter are the same Embodiment 1, obtains epoxy intermediate product (epoxy fatty acid methyl ester) 502kg. Obtain final product (chlorinated epoxy type plasticizer) 603kg, and its chlorine content is 21.3%

Embodiment 3

[0031] Example 3: In a 1000-liter glass-lined stirred reactor, 500 kg of biodiesel with an iodine value of 82 and 50 kg of formic acid were respectively added, the temperature was raised to 42° C. under stirring, and the heating was stopped for use.

[0032] Add 150 kg of hydrogen peroxide liquid with a mass percentage of 50% to the hydrogen peroxide metering and dropping tank, and add the hydrogen peroxide to a 1000-liter glass-lined stirring reactor at a uniform speed under stirring conditions, and control the reaction temperature to 60 ° C for 2.0 hours After the addition of hydrogen peroxide is completed, the materials in the reactor are kept insulated and stirred for 2 hours. After separation, washing and dehydration, 501kg of epoxy intermediate product (epoxy fatty acid methyl ester) was obtained. The epoxidation process produces 102 kg of formic acid solution with a concentration of 40%.

[0033] Add the above-mentioned epoxy intermediate product to the chlorination re...

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Abstract

The invention provides a method for preparing a chloro-epoxy fatty acid methyl ester plasticizer, which belongs to the field of preparation of plasticizers for organic chemical products. The method comprises the following steps: in the presence of C1 to C2 organic acids and hydrogen peroxide, carrying out epoxidation reaction so as to obtain epoxidation products; and then carrying out chlorination reaction on the obtained epoxidation products by using 2, 2'-azo-bis-isobutyronitrile or organic peroxides as a catalyst and using chlorine as a chlorinating agent so as to obtain the chloro-epoxy fatty acid methyl ester plasticizer. Compared with the traditional preparation methods, because the molecule of the plasticizer produced by using the method of the invention has ester groups and chlorine groups with strong polarity and the main bodies of aliphatic chains with weak polarity, the plasticizer has a good compatibility with polar polymers; and meanwhile, the method has the advantages ofsimple preparation process, low preparation cost and strong market competitiveness.

Description

technical field [0001] The invention relates to a preparation method of a plasticizer for organic chemical products, in particular to a preparation method of a chlorinated epoxy fatty acid methyl ester plasticizer. Background technique [0002] In the field of polymer material processing, especially in the molding process of polyvinyl chloride (PVC), a certain proportion of plasticizer must be added. At present, phthalate plasticizers are commonly used, such as phthalate (such as DOP, DEP, DBP) plasticizers, which are not easy to biodegrade, have certain toxicity, and the scope of use is relatively limited. In recent years, higher hygienic requirements have been put forward for plastic plasticizers, making new application fields of epoxy vegetable oil and new epoxidation technology a research hotspot. Many countries have published a large number of new patents and the latest research reports. Epoxy Soybean oil is an epoxy plasticizer developed and applied earlier at home an...

Claims

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Application Information

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IPC IPC(8): C07D301/00C07D303/02C08L27/06C08K5/1515
Inventor 刘莹王正平王婷婷陈太龙
Owner GUANGZHOU UNIVERSITY
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