Method for producing cold-resistant plasticizer through industrial byproduct nylon acid

A technology of cold-resistant plasticizer and nylon acid, which is applied in chemical instruments and methods, preparation of organic compounds, preparation of carboxylic acid esters, etc., can solve problems such as waste pollution and environmental protection, achieve good compatibility, reduce costs, and be economical The effect of benefits and social benefits

Inactive Publication Date: 2013-04-03
ZHEJIANG JIANYE CHEM +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to solve the shortcomings and deficiencies of the prior art. The present invention provides a method for producing cold-resistant plasticizers by using industrial by-product nylon acid. It has the advantages of shortening and reducing the discharge of industrial "three wastes", and the use of industrial by-product nylon acid as raw material realizes the efficient and reasonable reuse of by-product nylon acid, and also solves the problem of waste polluting the environment

Method used

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  • Method for producing cold-resistant plasticizer through industrial byproduct nylon acid
  • Method for producing cold-resistant plasticizer through industrial byproduct nylon acid
  • Method for producing cold-resistant plasticizer through industrial byproduct nylon acid

Examples

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Effect test

Embodiment 1

[0031] 2.7kg of solid nylon acid, 6.4kg of 2-propylheptanol (the average molecular weight of nylon acid is 135, and the molar ratio of nylon acid to 2-propylheptanol is 1:2), put into the esterification kettle, and put into the catalyst tetrabutyl titanate 0.009kg of ester and 0.009kg of activated carbon are used to absorb oxygen and decolorize, stir and heat up. Control the esterification temperature at 170°C and the reaction time for 4 hours. After the reaction is complete, carry out distillation dealcoholization directly. The dealcoholization temperature is 175°C and the vacuum degree is 0.085MPa. , and finally filtered to obtain the product nylon acid bis(2-propylheptanol) ester.

Embodiment 2

[0033] 2.7kg of solid nylon acid, 7.0kg of 2-propylheptanol (the average molecular weight of nylon acid is 135, and the molar ratio of nylon acid to 2-propylheptanol is 1:2.1), put into the esterification kettle, and put into the catalyst tetramethyl titanate 0.010kg of ester and 0.010kg of activated carbon are used to absorb oxygen and decolorize, stir and heat up. Control the esterification temperature at 165°C and the reaction time for 4 hours. After the reaction is complete, carry out distillation dealcoholization directly. The dealcoholization temperature is 170°C and the vacuum degree is 0.09MPa. Wash with water, and finally filter to obtain the product nylon acid bis(2-propylheptyl alcohol) ester.

[0034] Tested by Zhejiang Jianye Chemical Co., Ltd., the product has the advantages of low volatility, extraction resistance, migration resistance, compatibility, processability, and low-temperature performance, and meets the processing and application requirements of PVC pr...

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Abstract

The invention provides a method for producing a cold-resistant plasticizer through industrial byproduct nylon acid, and belongs to the technical fields of comprehensive utilization of the nylon acid and preparation of plasticizers. According to the method, the industrial byproduct nylon acid is used for replacing the expensive long-chain fatty acid to be used as the raw material to react with novel alcohol, namely 2-propyl heptanol, for high-molecular plasticizer to realize the preparation, thus the byproduct can be reasonably recycled, the problem due to pollution of the wastes to the environment can be solved, and the cost can be greatly reduced. The method adopts the process of dealcoholizing firstly and water washing secondly, so that the production process can be simplified, the energy consumption can be saved, and the production period can be shortened. The method is remarkable in economic benefit and social benefit; and the cold-resistant plasticizer has the advantages of being high in compatibility with PVC (Polyvinyl Chloride) and excellent in plasticity and cold resistance, and meets the requirements of product processing and application.

Description

technical field [0001] The invention discloses a method for producing a cold-resistant plasticizer by using nylon acid, an industrial by-product, and belongs to the technical field of comprehensive recycling of nylon acid and plasticizer preparation. Background technique [0002] Aliphatic dibasic esters are widely used as a special cold-resistant plasticizer in the processing and application of organic polymer materials because of their excellent low-temperature performance, impact resistance, plasticizing efficiency and good viscosity properties. , has developed rapidly in recent years, and the demand has increased year by year. At present, the cold-resistant plasticizers produced industrially are mainly prepared by the esterification reaction of long carbon chain dibasic acids such as adipic acid and sebacic acid with 2-ethylhexanol and n-butanol, but the raw materials used are relatively expensive. High, unstable source, and its application is restricted economically, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/08C07C69/003C08K5/11
Inventor 冯烈蒋平平陈云斌董玉明刘朋
Owner ZHEJIANG JIANYE CHEM
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