Environment-friendly migration-resistant epoxy fatty acid cyclohexyl plasticizer and preparation method thereof

A technology of epoxy fatty acid methyl ester and epoxy fatty acid, which is applied in the field of epoxy fatty acid cyclohexyl ester plasticizer and its preparation, can solve slow volatilization, migration or extraction, intolerance to migration, and affect the performance and life of PVC products And other issues

Inactive Publication Date: 2015-11-25
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small molecular volume of the traditional epoxy fatty acid methyl ester, it has the disadvantages of not being resistant to migration and having a low flash point.
During the thermal processing of PVC products, epoxy fatty acid methyl ester is easy to migrate and volatilize from PVC. This aspect causes waste of plasticizer resources, forcing PVC product manufacturers to invest additional recycling equipment to prevent plasticizer volatilization Pollution to the environment; on the other hand, due to the generally low flash point of traditional epoxy fatty acid methyl esters (180-190°C), the plasticizers volatilized during PVC thermal processing still have certain safety hazards
During the use of PVC products, epoxy fatty acid methyl ester is also easy to slowly volatilize, migrate or extract from the products, seriously affecting the performance and life of PVC products

Method used

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  • Environment-friendly migration-resistant epoxy fatty acid cyclohexyl plasticizer and preparation method thereof
  • Environment-friendly migration-resistant epoxy fatty acid cyclohexyl plasticizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Mix 100 parts of oleic acid, 40 parts of cyclohexanol, 0.5 parts of concentrated sulfuric acid, and 10 parts of cyclohexane evenly, and esterify at 85°C for 3 hours in a reactor equipped with a water separator. The oil after esterification With a mass fraction of 5% NaHCO 3 The solution was washed until neutral, and finally the water and unreacted cyclohexanol were distilled off under reduced pressure to obtain cyclohexyl oleate.

[0020] Take 50 parts of hydrogen peroxide with a mass fraction of 35%, 8 parts of formic acid, 1 part of concentrated sulfuric acid, and 0.5 part of urea and mix them evenly to obtain an active peroxyacid, which is then added dropwise to 100 parts of cyclohexyl oleate , the reaction temperature is 60°C, and the dropping time is controlled within 1 hour. After the dropping is completed, the reaction is continued for 4 hours with insulation and stirring. 3 The solution was washed to neutrality, and finally dehydrated by vacuum distillation to ...

Embodiment 2

[0023] Mix 100 parts of linoleic acid, 45 parts of cyclohexanol, 1.5 parts of concentrated sulfuric acid, and 12 parts of toluene evenly, and esterify at 90°C for 3.5 hours in a reactor equipped with a water separator. The mass fraction is 5% NaHCO 3 The solution was washed until neutral, and finally the water and unreacted cyclohexanol were distilled off under reduced pressure to obtain cyclohexyl linoleate.

[0024] Take 65 parts of hydrogen peroxide with a mass fraction of 35%, 9 parts of acetic acid, 1.2 parts of benzenesulfonic acid, and 0.7 parts of urea and mix them evenly to obtain an active peroxyacid, and then add it dropwise to 100 parts of linoleic acid cyclohexyl In the ester, the reaction temperature is 60°C, and the dropping time is controlled within 1.5 hours. After the dropping, continue to keep warm and stir for 5.5 hours. 3 The solution was washed to neutrality, and finally dehydrated by vacuum distillation to obtain epoxy linoleic acid cyclohexyl ester pla...

Embodiment 3

[0027]Mix 40 parts of oleic acid, 60 parts of linoleic acid, 45 parts of cyclohexanol, 1.7 parts of concentrated sulfuric acid, and 15 parts of toluene evenly, and esterify at 100°C for 4 hours in a reactor equipped with a water separator. The liquefied oil is 5% NaHCO with mass fraction 3 The solution was washed until neutral, and finally the water and unreacted cyclohexanol were distilled off under reduced pressure to obtain unsaturated fatty acid cyclohexyl ester.

[0028] Take 70 parts of hydrogen peroxide, 11 parts of acetic acid, 1.5 parts of sodium bisulfate, and 0.8 parts of urea with a mass fraction of 35% and mix them uniformly to obtain an active peroxyacid, which is then added dropwise to 100 parts of unsaturated fatty acid cyclohexane In the ester, the reaction temperature is 60°C, and the dropping time is controlled within 1.5 hours. After the dropping, continue to keep warm and stir for 6 hours. 3 The solution was washed to neutrality, and finally dehydrated by...

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Abstract

The invention discloses an environment-friendly migration-resistant epoxy fatty acid cyclohexyl plasticizer and a preparation method thereof. The plasticizer is prepared from unsaturated fatty acid and cyclohexanol through esterification and epoxidation, the technological process is simple, strong continuity and high yield are realized, and the situation that a plasticizer manufacture factory adjusts the process route greatly and increases additional mechanical equipment input is avoided since the process of the plasticizer disclosed by the invention is completely compatible with the synthesis process of a conventional epoxy fatty acid methyl ester plasticizer. Under the same conditions, the migration rate of the plasticizer prepared through the method is only about 1 / 5 of that of the conventional epoxy fatty acid methyl ester plasticizer in PVC, the flash point of the plasticizer prepared through the method is 20-30 DEG C higher than that of the conventional epoxy fatty acid methyl ester plasticizer, and meanwhile, the plasticizer disclosed by the invention has the advantages of no toxicity, environment friendliness, good compatibility with polyvinyl chloride resin, high plasticizing efficiency and the like, can replace or partially replace phthalate plasticizers to be used for manufacturing polyvinyl chloride artificial leather, food-grade hoses, fresh-keeping films, infusion apparatuses, blood transfusion bags, medical gloves, children's toys, cables and wires and the like and has a wide application prospect.

Description

technical field [0001] The invention relates to an environmentally friendly and migration-resistant epoxy fatty acid cyclohexyl ester plasticizer and a preparation method thereof, belonging to the field of chemical auxiliary agents. Background technique [0002] Polyvinyl chloride (PVC) resin contains a large number of polar chlorine atoms, which leads to a large intermolecular interaction force and a high glass transition temperature (generally 87°C). At room temperature, pure PVC resin is in a glassy state and has no practical application value in most cases. Therefore, PVC resin generally needs to be plasticized before it can be processed and used. The principle of action of the plasticizer is to allow the plasticizer molecules to enter the PVC macromolecular chains, increase the distance between the PVC molecules, and weaken the interaction force between the PVC molecules, thereby improving the mobility between the resin molecular chains and significantly reducing the P...

Claims

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Application Information

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IPC IPC(8): C08K5/1515C08L27/06C07D301/12C07D303/42
Inventor 陈意贾茂林王芳杨涛范浩军廖学品
Owner SICHUAN UNIV
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