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C22 triacid triester elasticizer and method of preparing the same

A technology of ester plasticizer and triacid, which is applied in the field of C22 triacid triester plasticizer and the use of tung oil to prepare the plasticizer, can solve the problems of non-toxicity, biodegradability and high plasticizing ability , to achieve the effect of high flash point, good durability and low volatility

Inactive Publication Date: 2009-02-18
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

Non-phthalic plasticizers account for less than 10% of the total output, and there are very few biodegradable and biomass-based plasticizer products. It cannot satisfy the PVC plastic processing industry that plasticizers are non-toxic and biodegradable and high plasticizing capacity requirements

Method used

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  • C22 triacid triester elasticizer and method of preparing the same
  • C22 triacid triester elasticizer and method of preparing the same
  • C22 triacid triester elasticizer and method of preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] C 22 Trimethyl triacid plasticizer preparation

[0044] (1) Preparation of Methyl Caryonate

[0045] In a 500ml three-neck flask equipped with a constant temperature oil bath, a stirring device, a thermometer, and a reflux condenser, add 298 grams of tung oil, heat to 120°C, dehydrate under reduced pressure for 1 to 2 hours to make the water content less than 0.2%, and cool to 50°C , add 260 grams of methanol and 5 grams of potassium hydroxide, react at 60-70°C for 4 hours, 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 grams of methyl lyceate.

[0046] (2) Synthesis of dimethyl maleate

[0047] In a 500ml three-necked flask equipped with a constant temperature oil bath, a stirring device, a thermometer, and a fractional distillation condenser, add 200 grams of maleic anhydride, 250 grams of methanol and 0.5 grams of sul...

Embodiment 2

[0051] C 22 Preparation of dibutyl monomethyl triate

[0052] (1) Preparation of Methyl Caryonate

[0053] In a 500ml three-neck flask equipped with a constant temperature oil bath, a stirring device, a thermometer, and a reflux condenser, add 298 grams of tung oil, heat to 120°C, dehydrate under reduced pressure for 1 to 2 hours to make the water content less than 0.2%, and cool to 50°C , add 260 grams of methanol and 5 grams of potassium hydroxide, react at 60-70°C for 4 hours, 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 grams of methyl lyceate.

[0054] (2) Synthesis of dibutyl maleate

[0055] In a 500ml three-neck flask equipped with a constant temperature oil bath, a stirring device, a thermometer, and a fractional distillation condenser, add 200 grams of maleic anhydride, 400 grams of n-butanol and 6 grams of tetrabut...

Embodiment 3

[0059] C 22 Preparation of tributyl triacid plasticizer

[0060] (1) Preparation of butyl sulphonate

[0061] In a 500ml three-neck flask equipped with a constant temperature oil bath, a stirring device, a thermometer, and a reflux condenser, add 298 grams of tung oil, heat to 120°C, dehydrate under reduced pressure for 1 to 2 hours to make the water content less than 0.2%, and cool to 50°C , add 360 g of butanol and 8 g of potassium hydroxide, react at 80-100° C. for 4 hours, 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 grams of butyl carnitate.

[0062] (2) Synthesis of dibutyl maleate

[0063] In a 500ml three-neck flask equipped with a constant temperature oil bath, a stirring device, a thermometer, and a fractional distillation condenser, add 200 grams of maleic anhydride, 400 grams of n-butanol and 6 grams of tetrabutyl t...

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Abstract

The present invention relates to a C22 plasticizer of a tri-acid tri-ester category. The plasticizer has a general structure as shown on the right, wherein, R1 is CH3 or C4H9, and R2 is CH3 or C4H9. The present invention also relates to a method of preparing the C22 tri-acid tri-ester plasticizer. The preparation method comprises the following steps: transesterification reaction of tung oil, esterifition of maleic anhydride and addition reaction. Eleostearic acid in the tung oil is used as a main raw material to synthesize the plasticizer. The plasticizer in the category has the advantages of small mobility, low volatility, good miscibility to plastics, good flexibility, good durability and high flash point.

Description

1. Technical field [0001] The invention belongs to the technical field of plasticizer preparation, in particular to a C 22 A triacid triester plasticizer and a method for preparing the plasticizer from tung oil. 2. Background technology [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 for plastic processing. It is widely used in a large number of durable and easy-to-shape plastic products such as toys, food packaging, building materials, auto parts, electronic and medical components such as plasma bags and complete infusion sets. 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. At present, there are more than 500 kinds of comm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/75C07C67/347C08K5/12
Inventor 王定选夏建陵周浩黄焕商士斌孔振武聂小安
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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