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Synthetic method of novel adipate cold-resistant plasticizing agent

A cold-resistant plasticizer and technology of synthesis method, applied in the preparation of carboxylate, chemical instruments and methods, preparation of organic compounds, etc., can solve the problems of volatility resistance, poor extraction resistance and migration resistance, short molecular chain, molecular weight Small and other problems, to achieve better migration resistance, increase molecular weight, and increase the effect of molecular chain length

Inactive Publication Date: 2014-10-29
TONGXIANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Plasticizer (2-ethyl)hexyl adipate, or DOA, is a commonly used cold-resistant plasticizer, but its molecular chain is short and its molecular weight is small, so it is used in PVC products for its volatility resistance, resistance Poor extractability and migration resistance

Method used

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  • Synthetic method of novel adipate cold-resistant plasticizing agent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Put 400g of decanol and 120g of adipic acid into a three-necked flask, then add 1.2g of sulfuric acid and 0.5g of activated carbon, control the heating rate under vacuum, react at 120-150°C for 1 hour, release the vacuum after the reaction, and then wash with neutral water , The finished product is obtained after dehydration.

Embodiment 2

[0018] Put 358g of decanol and 120g of adipic acid into the three-necked flask, then add 1.2g of sulfuric acid and 0.5g of activated carbon, control the heating rate under vacuum, react at 120-150°C for 1 hour, release the vacuum after the reaction, and then neutralize and wash with water , The finished product is obtained after dehydration.

Embodiment 3

[0019] Embodiment 3HOOC (CH 2 ) 4 COOH+2ROH=ROOC(CH 2 ) 4 COOR+2H 2 o

[0020] Put 400g of decanol and 120g of adipic acid into a three-necked flask, then add 1.1g of sulfuric acid and 0.5g of activated carbon, control the heating rate under vacuum, react at 120-150°C for 1 hour, release the vacuum after the reaction, and then wash with neutral water , The finished product is obtained after dehydration.

[0021] Each parameter of the product made by 3 embodiments of the present invention is as follows:

[0022]

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Abstract

The invention belongs to the field of synthesis of chemicals and particularly relates to a synthetic method of a novel adipate cold-resistant plasticizing agent. The synthetic method comprises the following steps of: (1) adding alcohol and adipic acid which is 25%-40% of the weight of the alcohol to a reaction kettle, then adding sulfuric acid which is 0.1%-0.5% of the total weight and active carbon which is 0.1%-0.3% of the total weight, controlling heating speed in vacuum, and reacting at 120-150 DEG C for 1-5 hours; (2) after the reaction is finished, neutralizing, washing with water, and finally carrying out dehydration and pressure filtration to obtain a finished product, wherein the alcohol added to the reaction kettle in the step (1) can be decanol, isononyl alcohol or 810 alcohol. According to the synthetic method, 2-ethylhexanol in adipic acid (2-ethyl) hexyl is substituted with higher-class alcohol, so that the molecular weight is increased, the molecular chain length of a product is lengthened, and the product has better volatility resistance, extraction resistance and transfer resistance when used in a PVC (Polyvinyl Chloride) product.

Description

technical field [0001] The invention belongs to the field of synthesizing chemicals, in particular to a method for synthesizing a novel adipate cold-resistant plasticizer. Background technique [0002] Plasticizer (2-ethyl)hexyl adipate, or DOA, is a commonly used cold-resistant plasticizer, but its molecular chain is short and its molecular weight is small, so it is used in PVC products for its volatility resistance, resistance Extraction and migration resistance are poor. Contents of the invention [0003] In order to solve the defects and deficiencies of the above-mentioned prior art, the present invention provides a new type of compound that can increase the molecular weight and increase the length of the molecular chain, so that it can be used in PVC products with better volatility resistance, extraction resistance and migration resistance. Synthesis method of adipate cold-resistant plasticizer. [0004] Technical scheme of the present invention: a kind of synthetic...

Claims

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Application Information

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IPC IPC(8): C07C69/44C07C67/08C08K5/11
CPCC07C67/08
Inventor 顾跃明黄成伟张琴文
Owner TONGXIANG CHEM
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