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Emulsion paint resin of aminol epoxy solidified at room-temperature and its synthesis method

A room temperature curing, epoxy-type technology, used in emulsion coatings, emulsion coating resins and synthesis fields, to achieve the effect of eliminating volatile organic compounds

Inactive Publication Date: 2004-10-20
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the (a1) component of this patent has a carboxylic acid anhydride group, this group is very easy to react with water to generate a corresponding carboxylic acid, so the resin described in this patent cannot be synthesized in the aqueous phase

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015] 20 g of maleic anhydride was dissolved in 60 g of tetrahydrofuran, and 12.4 g of ethylenediamine was dissolved in 90 g of tetrahydrofuran. The maleic anhydride solution was slowly added dropwise to the ethylenediamine solution (the drop rate was 1 mL / min), and reacted at 20-22°C. The obtained product was washed four times with tetrahydrofuran, filtered under reduced pressure, and then dried and purified under reduced pressure to obtain 13.6 g of maleic anhydride monoethylenediamine amide.

[0016] Add 2.3g acrylic acid, 8.7g ethyl acrylate, 23.0g methyl methacrylate and 2.8g P-nonylphenol polyethylene oxide ether sodium sulfate (n=20), 115.0g deionized water into the , a stirrer and a reactor with a nitrogen protection device, and emulsified at a temperature of 78 ° C for 40 min. 9.02 g of ammonium persulfate solution with a concentration of 3.5% was added to initiate polymerization, and the temperature was raised to 86° C., and when the temperature of the above emulsi...

example 2

[0021] The synthesis of compound A is the same as example 1.

[0022] Add 2.3g acrylic acid, 20.1g methyl methacrylate, 11.5g ethyl acrylate and 2.8g P-nonylphenol polyethylene oxide ether sodium sulfate (n=20), 115.0g deionized water into the , agitator and nitrogen protection device in the reactor. And emulsified at a temperature of 78°C for 40min, adding 9.02g of ammonium persulfate solution with a concentration of 3.5% to initiate polymerization, the temperature was raised to 86°C, and when the temperature of the above emulsion dropped to 78°C, a seed emulsion was prepared.

[0023] In the above emulsion, slowly add dropwise a mixed solution made of 2.3g acrylic acid, 20.1g methyl methacrylate and 63.3g ethyl acrylate, dropwise add 2.76g maleic anhydride monoethylenediamine amide and 28.8g water The resulting solution was added dropwise with an initiator solution made of 0.75 g of ammonium persulfate and 20 g of water and 10 g of a 12% sodium bicarbonate aqueous solution,...

example 3

[0027] The synthesis of compound A is the same as example 1.

[0028] Add 2.3g acrylic acid, 5.8g ethyl acrylate, 25.9g methyl methacrylate and 2.8g P-nonylphenol polyethylene oxide ether sodium sulfate (n=20), 115.0g deionized water into the , a stirrer and a reactor with a nitrogen protection device, and emulsified at a temperature of 78 ° C for 40 min. 9.02 g of ammonium persulfate solution with a concentration of 3.5% was added to initiate polymerization, and the temperature was raised to 87°C. When the temperature of the above emulsion dropped to 78°C, a seed emulsion was prepared.

[0029] In the above emulsion, then slowly add dropwise a mixed solution made of 2.3g acrylic acid, 14.4g methyl methacrylate and 69.0g ethyl acrylate, add dropwise 2.88g maleic anhydride monoethylenediamine amide and 28.8g water The resulting solution was added dropwise with an initiator solution made of 0.75 g of ammonium persulfate and 20 g of water and 10 g of a 12% sodium bicarbonate aqu...

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PUM

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Abstract

An amino / epoxy type emulsion resin for the paint solidified at room-temp is prepared from the copolymer emulsion containing primary amine radical and the emulsion fo epoxy-terminated compound which can cross-link with amino at ordinary temp. through synthesizing the compound A with dual bond and primary amine radical, synthesizing the copolymer emulsion containing said compound A, preparing the epoxy-terminated compound compound emulsion B, and mixing A with B in mole ratio of 1:1. Its advantages are low environmental pollution and low content of VOCs in paint.

Description

technical field [0001] The invention relates to an emulsion coating resin of an amine-based / epoxy room-temperature curing system and a synthesis method, belonging to the emulsion coating technology. Background technique [0002] US Patent (Patent No.: 4,696,975) proposes a two-component room temperature curing resin formulation, which is suitable for coatings, adhesives and sealants. The resin comprises component (A) and component (B), wherein component (A) is a polymer with carboxyl and tertiary amino groups, which is the reaction product of (a1) and (a2), (a1) is A vinyl polymer containing carboxylic anhydride and carboxylic acid groups; (a2) a compound containing at least one active hydrogen capable of reacting with the carboxylic anhydride in (a1) and a tertiary amino group; (B) is a polyepoxy compound. (A) component and (B) component can be cross-linked at room temperature after mixing. Because the (a1) component of this patent has a carboxy...

Claims

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Application Information

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IPC IPC(8): C09D4/00C09D5/02
Inventor 王艳君曾建国袁才登曹同玉
Owner TIANJIN UNIV
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