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Acrylic modified epoxy resin emulsion and preparation method thereof

An epoxy resin emulsion, epoxy resin technology, applied in the direction of coating, can solve problems such as ecological environment damage, and achieve the effects of low cost, good water resistance, and good emulsion stability

Inactive Publication Date: 2010-12-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of some reactive emulsifiers containing APEO groups will cause damage to the ecological environment, so it is particularly important to seek a reactive emulsifier that does not contain APEO groups and has good emulsifying ability.

Method used

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  • Acrylic modified epoxy resin emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: Preparation of reactive anionic nonionic epoxy resin emulsifier

[0032] (1) Take 0.1mol epoxy resin E-51, 0.1mol fatty alcohol polyoxyethylene ether C 12 h 25 (CH 2 CH 2 O) 7 H and 0.44 g of triphenylphosphine were placed in a four-necked flask, reacted at 90° C. for 1 h, and then heated to 100° C. to continue the reaction for 3 h to obtain polyoxyethylene ether monoester of epoxy resin.

[0033] (2) Cool down the epoxy resin polyoxyethylene ether monoester obtained in (1) to 70°C, weigh 0.1 mol of taurine and slowly add it dropwise into a four-necked flask, and continue the reaction for 3 hours after the addition is completed, and then finish the reaction by adding 27g of NaOH aqueous solution with a mass concentration of 15% was neutralized and dispersed to obtain a reactive anion-nonionic epoxy resin emulsifier.

Embodiment 2

[0034] Embodiment 2: Preparation of reactive anionic nonionic epoxy resin emulsifier

[0035] (1) Take 0.1mol epoxy resin E-44, 0.1mol fatty alcohol polyoxyethylene ether C 12 h 25 (CH 2 CH 2 O) 9 H and 1.02 g of triphenylphosphine were placed in a four-necked flask, reacted at 90°C for 1 hour, and then heated to 110°C to continue the reaction for 3 hours to obtain polyoxyethylene ether monoester of epoxy resin.

[0036] (2) Cool down the epoxy resin polyoxyethylene ether monoester obtained in (1) to 70°C, weigh 0.1 mol of N-methyl taurine and slowly drop it into a four-necked flask, and continue the reaction for 3 hours after the addition is completed. After finishing the reaction, 20g of NaOH solution with a mass concentration of 20% was neutralized and dispersed to obtain a reactive anion-nonionic epoxy resin emulsifier.

Embodiment 3

[0037] Embodiment 3: the preparation of reactive anionic nonionic epoxy resin emulsifier

[0038] (1) Take 0.1mol epoxy resin E-44, 0.1mol fatty alcohol polyoxyethylene ether C 12 h 25 (CH 2 CH 2 O) 15 H and 1.28 g of triphenylphosphine were placed in a four-necked flask, and reacted at 110° C. for 4 hours to obtain polyoxyethylene ether monoester of epoxy resin.

[0039] (2) Cool down the epoxy resin polyoxyethylene ether monoester obtained in (1) to 90° C., weigh 0.1 mol of N-methyl taurine and slowly drop it into a four-necked flask, and continue the reaction for 2 hours after the addition is completed. After finishing the reaction, 20g of NaOH solution with a mass concentration of 20% was neutralized and dispersed to obtain a reactive anion-nonionic epoxy resin emulsifier.

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Abstract

The invention discloses an acrylic modified epoxy resin emulsion and a preparation method thereof. The preparation method comprises the following steps of: mixing epoxy resin, fatty alcohol-polyoxyethylene ether and triphenylphosphine and reacting the mixture at the temperature of between 90 and 110 DEG C for 3 to 5 hours to obtain epoxy resin polyethenoxy ether monoester; controlling the temperature of the obtained epoxy resin polyethenoxy ether monoester within a range from 70 to 90 DEG C; adding sulfamic acid into the epoxy resin polyethenoxy ether monoester, reacting the two materials for 2 to 4 hours, adding aqueous solution of NaOH into the mixture for neutralizing and dispersing, and adjusting the pH to be 7 to 8 after the dispersion to obtain a reactive type anionic and nonionic epoxy resin emulsifier; and polymerizing the emulsifier with epoxy resin and acrylic acid series monomer emulsion to obtain stable environment-friendly acrylic grafted epoxy resin emulsion. The method avoids the influence of the emulsifier on storage stability and later-stage filming of the emulsion; and compared with pure acrylic emulsion, the obtained product has the advantages that the film has more superior wear resistance, adhesion and chemical resistance, and can be applied to metal corrosion-resistant paint, road mark paint, indoor and outdoor floor paint and the like.

Description

technical field [0001] The invention relates to an epoxy resin emulsion, in particular to an acrylic modified epoxy resin emulsion and a preparation method thereof. Background technique [0002] Epoxy resin has excellent adhesion, thermal stability, chemical resistance, insulation and mechanical strength, and is widely used in coatings, adhesives and composite materials. However, commonly used epoxy resins are non-water-soluble, and are only soluble in organic solvents such as aromatic hydrocarbons, alcohols and ketones, which will cause pollution to the environment. With the increasing awareness of global environmental protection, governments of various countries pay more and more attention to the pollution of volatile organic compounds (VOC) to the environment. Our country also implemented the coating environmental protection standard on July 1, 2004. Therefore, the water-based epoxy resin has become a hot research topic at home and abroad. [0003] The water-based meth...

Claims

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Application Information

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IPC IPC(8): C08F283/10C08F2/30C08F2/26C08G59/14C09D151/08
Inventor 王锋张洪彬涂伟萍胡剑青
Owner SOUTH CHINA UNIV OF TECH
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