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Method for preparing environment-friendly plasticizer by modification and deep epoxidation of low-quality animal and vegetable oil

An animal and vegetable oil, low-quality technology, which is applied in the field of waste resource utilization, can solve the problems of inability to deep epoxidation, low epoxy value of products, poor migration resistance of plasticizers, etc., and achieves low price and light color of products. , increase the effect of active points

Active Publication Date: 2015-12-02
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 at 70°C for 3 hours under reflux. 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 upper...

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 at 75°C for 2.5 hours under reflux. 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 7 par...

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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 present invention involves a method of renovation and deep epoxy -based plasticizers in low -quality animals and plant oils, which belongs to the field of waste resource utilization. Background technique [0002] The plasticizer is a type of chemical with the largest output and consumption of polyvinyl chloride (PVC) products. Its global demand has exceeded 8 million tons of annual demand, and with the field of 21st century materials, it is "plastic -to -steel steelThe rise of the concept of "plastic wood" is expected to continue to grow at a high speed at a speed of about 10%in the next 20 years.Diabenate is a type of plasticizer with the largest current dosage and the most widely used range, accounting for 95%of the total global plasticizer.However, more and more research reports have pointed out that phthalate plays a role similar to estrogen in the organism, which can interfere with endocrine, reduce men's semen and sperm quantity, reduce sperm exer...

Claims

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Application Information

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Patent Type & Authority Patents(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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