C22 triacid triester plasticizer and preparation method thereof

A technology of ester plasticizer and acid three, which is applied in the field of plasticizers, can solve the problems of high biodegradability and plasticizing ability, and cannot meet the non-toxicity of plasticizers, so as to improve utilization rate, reduce production cost, The effect of shortening the reaction time

Inactive Publication Date: 2011-12-14
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

Unable to meet the requirements of PVC plastic processing industry ...

Method used

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  • C22 triacid triester plasticizer and preparation method thereof
  • C22 triacid triester plasticizer and preparation method thereof
  • C22 triacid triester plasticizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] C 22 Trimethyl triacid plasticizer preparation

[0051] (1) Preparation of Methyl Caryonate

[0052] In a 500ml three-necked flask equipped with a constant temperature oil bath, a stirring device, a thermometer, and a reflux condenser, add 298g of tung oil, heat to 120°C, dehydrate under reduced pressure for 1-2h, make the water content less than 0.2%, cool to 50°C, add 260g methanol, 5g potassium hydroxide, react at 60-70°C for 4h, recover excess methanol, and cool to room temperature. Glycerin was separated, and after washing with water to remove the catalyst, free water and excess methanol were distilled off to obtain 280 g of methyl lyceate.

[0053] (2) Synthesis of dimethyl maleate

[0054] In a 500mL three-necked flask equipped with a constant temperature oil bath, stirring device, thermometer, and fractional distillation condenser, add 200g of maleic anhydride, 250g of methanol and 4.5g of [HSO 3 -bmim] + [HSO 4 ] - , carry out the esterification reaction...

Embodiment 2

[0058] C 22 Preparation of Dibutyl Methyl Triate Plasticizer

[0059] (1) Preparation of Methyl Caryonate

[0060] In a 500ml three-necked flask equipped with a constant temperature oil bath, a stirring device, a thermometer, and a reflux condenser, add 298g of tung oil, heat to 120°C, dehydrate under reduced pressure for 1-2h, make the water content less than 0.2%, cool to 50°C, add 260g methanol, 5g potassium hydroxide, react at 60-70°C for 4h, recover excess methanol, and cool to room temperature. Glycerin was separated, and after washing with water to remove the catalyst, free water and excess methanol were distilled off to obtain 280 g of methyl lyceate.

[0061] (2) Synthesis of dibutyl maleate

[0062] In a 500mL three-neck flask equipped with a constant temperature oil bath, stirring device, thermometer, and fractional distillation condenser, add 200g of maleic anhydride, 400g of butanol and 6g of [HSO 3 -bmim] + [HSO 4 ] - , carry out the esterification reactio...

Embodiment 3

[0066] C 22 Preparation of tributyl triacid plasticizer

[0067] (1) Preparation of butyl sulphonate

[0068] In a 500ml three-necked flask equipped with a constant temperature oil bath, a stirring device, a thermometer, and a reflux condenser, add 298g of tung oil, heat to 120°C, dehydrate under reduced pressure for 1-2h, make the water content less than 0.2%, cool to 50°C, add 360g butanol, 8g potassium hydroxide, react at 80-100°C for 4h, recover excess butanol, and cool to room temperature. Glycerin was separated, and after washing with water to remove the catalyst, free water and excess butanol were distilled off to obtain 320 g of butyl sulphonate.

[0069] (2) Synthesis of dibutyl maleate

[0070] In a 500mL three-neck flask equipped with a constant temperature oil bath, stirring device, thermometer, and fractional distillation condenser, add 200g of maleic anhydride, 400g of butanol and 6g of [HSO 3 -bmim] + [HSO 4 ] - , carry out the esterification reaction at ...

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Abstract

The invention discloses a C22 triacid triester plasticizer and a preparation method thereof. The preparation steps include: tung oil transesterification reaction, maleic anhydride esterification reaction and Diels-Alder addition reaction. B-acid and L-acid ionic liquid catalysts were prepared for the esterification of maleic anhydride, among which the B-acid ionic liquid [HSO3-bmim]+[HSO4]- had the best catalytic effect, and the ester yield could reach 99.8% , after repeated use 4 times, the ester yield remained above 97.7%. The invention uses jatrophic acid in tung oil as the main raw material to synthesize the plasticizer. The plasticizer has the characteristics of small migration, low volatility, miscibility with plastics, good flexibility and durability, and high flash point. It can be used as the main plasticizer or compounded with other plasticizers.

Description

technical field [0001] The invention belongs to the technical field of plasticizers for PVC, in particular to a plasticizer prepared from tung oil and a preparation method thereof. Background technique [0002] Plasticizers are functional products that are added to high molecular polymers to increase the plasticity of materials, make them easy to process, and give softness to products. It is an important additive in plastic processing. It is widely used in toys, food packaging, building materials, auto parts, electronics and medical components, such as plasma bags and complete infusion sets, etc., in a large number of durable and easy-to-shape plastic products. Plasticizer is the most consumed variety among plastic processing aids, and its output accounts for about 60% of the total output of plastic aids. Mainly used in polyvinyl chloride (PVC) products. There are many kinds of plasticizers, and there are more than 500 kinds of commercialized ones at present. The variety o...

Claims

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Application Information

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IPC IPC(8): C08K5/12C07C69/753C07C67/347C08L27/06
Inventor 夏建陵连建伟万厉张燕
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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