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Method for preparing environment-friendly type plasticizer from low-quality animal and vegetable oil through modification and deep epoxidation

A low-quality technology of animal and vegetable oils, applied in the field of waste resource utilization, can solve the problems of poor migration resistance of plasticizers, low epoxy value of products, and inability to deep epoxidation, etc., to increase active points and lighten the color of products Light, cheap effect

Active Publication Date: 2014-06-04
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the free fatty acid content is high, it will seriously affect the subsequent transesterification reaction and epoxidation reaction, and the loss in the process of washing and separation will affect the yield; when the iodine value is low, it cannot be deeply epoxidized (epoxidation reaction mainly occurs in the double bond above), the product has low epoxy value and poor migration resistance as a plasticizer, so how to use these low-quality animal and vegetable oils with high added value is imminent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029](1) Pretreatment: Warm up 100 parts of recycled waste oil to 40°C, settle and filter to remove solid impurities, then add 0.2% phosphoric acid and 2% water by weight of the oil, and continue to stir and degumming at 40°C for 30 minutes. Finally, the gained oil is distilled and dehydrated under reduced pressure at 0.1 atm;

[0030] (2) Methyl esterification: Mix 100 parts of pretreated oil, 1 part of methanol, and 0.5 part of concentrated sulfuric acid, and esterify for 3 hours under reflux at 70°C. The esterified oil is 5% NaHCO 3 The solution was washed to neutrality, and finally dehydrated by distillation at 0.1 atm;

[0031] (3) Transesterification: 100 parts of esterified oil, 4 parts of propylene alcohol, and 0.5 part of sodium methoxide are mixed evenly, and transesterified at 55°C for 3 hours under reflux conditions. After the reaction is completed, the product is washed with water and allowed to stand for stratification , taking the upper layer oil material and ...

Embodiment 2

[0035] (1) Pretreatment: heat up 100 parts of hogwash oil to 60°C, settle and filter to remove solid impurities, then add 0.4% of phosphoric acid and 5% of the weight of the oil to the removed oil, and continue at 60 Stir and degumming at ℃ for 30 minutes, and finally distill and dehydrate the obtained oil at 0.1atm under reduced pressure;

[0036] (2) Methanol esterification: Mix 100 parts of pretreated oil, 3 parts of methanol, and 1.0 part of concentrated sulfuric acid, and esterify for 2 hours under reflux at 80°C. The esterified oil is 5% NaHCO 3 The solution was washed to neutrality, and finally dehydrated by distillation at 0.1 atm;

[0037] (3) Transesterification: 100 parts of oil after esterification, 6 parts of β-hydroxyethyl acrylate, and 1.5 parts of potassium hydroxide are mixed evenly, and transesterified at 65°C for 2 hours under reflux conditions. After the reaction is completed, the product is washed with water , standing for stratification, taking the...

Embodiment 3

[0041] (1) Pretreatment: Heating 50 parts of gutter oil and old oil from the oil mill to 50°C, settling and filtering to remove solid impurities, and then adding 0.3% phosphoric acid and 3% of the weight of the oil to the removed oil. Continue stirring and degumming at 50°C for 30 minutes, and finally dehydrate the obtained oil by decompression distillation;

[0042] (2) Esterification: Mix 100 parts of pretreated oil, 2 parts of methanol, and 0.8 parts of concentrated sulfuric acid, and esterify for 2.5 hours under reflux at 75°C. The esterified oil is 5% NaHCO 3 The solution was washed to neutrality, and finally dehydrated by distillation at 0.1 atm;

[0043] (3) Transesterification: 100 parts of oil after esterification, 5 parts of butenol, and 1.0 sodium hydroxide are mixed evenly, and transesterified at 60°C for 2.5 hours under reflux conditions. layer, take the upper layer oil material and dehydrate under reduced pressure at 0.1atm;

[0044] (4) Epoxidation: Take...

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Abstract

The invention discloses a method for preparing an environment-friendly type plasticizer from low-quality animal and vegetable oil through modification and deep epoxidation. According to the method, the environment-friendly type epoxy aliphatic ester type plasticizer with a high epoxy value is prepared by taking low-quality animal and vegetable oil such as swill-cooked dirty oil, waste cooking oil, old oil in oil-pressing mills and the like as raw materials through processes of esterification of different steps, double bond introduction and deep epoxidation. The epoxy plasticizer prepared by using the method is high in yield, low in cost, high in epoxy value (greater than 5.0%) and good in mobility resistance, has good compatibility and high plasticization efficiency with a polyvinyl chloride resin, can replace or partially replace a phthalic acid ester type plasticizer for manufacturing of polyvinyl chloride artificial leather, shoe materials, outdoor decoration materials, sports articles, PVC (Polyvinyl Chloride) pipelines, wire cables and the like, and is wide in application prospect.

Description

technical field [0001] The invention relates to a method for preparing an environment-friendly plasticizer through modification and deep epoxidation of low-quality animal and vegetable oil, and belongs to the field of resource utilization of waste. Background technique [0002] Plasticizer is a kind of chemical with the largest output and consumption among the additives for polyvinyl chloride (PVC) products. Its global annual demand has exceeded 8 million tons. With the rise of the concept of "replacing wood with plastic", it is expected that the plasticizer industry will continue to grow at a rate of about 10% in the next 20 years. Phthalate is currently the largest and most widely used type of plasticizer, accounting for 95% of the total global plasticizer usage. However, more and more research reports point out that phthalates play a role similar to estrogen in organisms, which can interfere with endocrine, reduce the amount of semen and sperm count in men, reduce sperm ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/1515C08L27/06
Inventor 范浩军陈意贾茂林李成祥刘若望石碧
Owner SICHUAN UNIV
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