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A kind of method that prepares polyurethane catalyst with the rectification residue of producing dimethylaminoethyl acrylate

A technology of dimethylaminoethyl acrylate and polyurethane catalyst, which is applied in the preparation of aminohydroxyl compounds, chemical instruments and methods, and the preparation of organic compounds, and can solve a large number of problems such as treatment costs, hazardous waste, and environmental impact, and achieve reduction The effect of processing fees

Active Publication Date: 2021-01-12
狄超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dimethylaminoethyl acrylate has a production scale of more than 100,000 tons in China, which produces a large amount of hazardous waste. The treatment process has a certain impact on the environment and requires a large amount of treatment costs.

Method used

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  • A kind of method that prepares polyurethane catalyst with the rectification residue of producing dimethylaminoethyl acrylate
  • A kind of method that prepares polyurethane catalyst with the rectification residue of producing dimethylaminoethyl acrylate
  • A kind of method that prepares polyurethane catalyst with the rectification residue of producing dimethylaminoethyl acrylate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 100g of residue and 30g of methanol into a three-necked flask, heat to 40°C, stir to dissolve, stop heating, add 40g of diethylene glycol, 20g of nonylphenol polyoxyethylene ether, and stir for 30 minutes.

[0032] Carry out foaming by following formula with embodiment 1 product, data is as follows:

[0033]

[0034]

Embodiment 2

[0036] Add 100g of residue and 30g of isopropanol into a three-necked flask, heat to 40°C and stir to dissolve, stop heating, add 20g of diethanolamine, 30g of diethylene glycol, 20g of N-303 polyether, and stir for 30 minutes.

[0037] Carry out foaming by following formula with embodiment 2 product and other catalyzers, comparative data is as follows:

[0038]

Embodiment 3

[0040] The residue is directly used as a catalyst, and other catalysts are foamed according to the following formula, and the comparative data are as follows:

[0041]

[0042]

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PUM

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Abstract

The invention discloses a method for using rectified residues generated during production of dimethylaminoethyl acrylate for preparing a polyurethane catalyst. The method includes the steps of directly adopting the rectified residues generated during the production of dimethylaminoethyl acrylate as a catalyst or adding the residues into a reaction still, adding a solvent and stirring the mixture at 20-100 DEG C for dissolution; after cooling, separately adding a diluent and a phase solvent, stirring the mixture for 5-60 min, and then filtering the mixture to obtain the polyurethane catalyst. The rectified residues generated during the production of dimethylaminoethyl acrylate are converted into the practical catalyst for polyurethane, waste is turned into treasure, all components can be comprehensively utilized without generation of secondary dangerous waste, and the disposal expense for the dangerous waste is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a method for preparing polyurethane catalysts from rectification residues produced from dimethylaminoethyl acrylate. Background technique [0002] Dimethylaminoethyl acrylate is a quaternary ammonium acrylate and a multifunctional active monomer widely used in water treatment, daily medicine, coatings and other industries. In the production process of dimethylaminoethyl acrylate, 2%-10% of rectification residues will inevitably be produced. In terms of environmental protection, this part of rectification residues is defined as hazardous waste and is treated by incineration. Dimethylaminoethyl acrylate has a production scale of more than 100,000 tons in China, which produces a large amount of hazardous waste. The treatment process has a certain impact on the environment and requires a large amount of treatment costs. Contents of the invention [0003] The object o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/18C08G18/22C08G18/20C08G18/48C08G18/42C08J9/08C08J9/00C07C213/10C07C219/08C08G101/00
CPCC07C213/10C08G18/163C08G18/1825C08G18/1833C08G18/1866C08G18/2018C08G18/22C08G18/4018C08G18/42C08G18/48C08G18/4804C08G2101/00C08J9/00C08J9/08C08J2375/06C08J2375/08C07C219/08
Inventor 狄超
Owner 狄超