Aqueous self-emulsifying epoxy resin emulsion and preparation thereof

A technology of epoxy resin emulsion and epoxy resin, which is applied in the chemical industry, can solve problems such as difficult control, complicated preparation process, and coarse particles, and achieve the effects of energy saving, simple process, and good performance

Inactive Publication Date: 2012-05-30
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

External emulsification can be divided into direct emulsification method and phase inversion method, however, the emulsion system obtained by direct emulsification is not stable, the particles are coarse, and it is difficult to control
Internal emulsification method such as US4197389, it adopts two-step method, first synthesizes emulsifier, then reacts with epoxy resin to prepare water-based epoxy resin emulsion, and the preparation process is more complicated

Method used

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  • Aqueous self-emulsifying epoxy resin emulsion and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 100g of E-51, 7.4g of polyethylene glycol 2000 (PEG-2000, molecular weight 2000), 0.4g of triphenylphosphine catalyst and 10g of n-butanol into the reaction flask, heat to 130°C, react for 2 hours, start Cool down, and when the temperature drops to 100°C, slowly add 252g of deionized water under high-speed stirring. After the water is completely added, stir for another 0.5 hour and filter to obtain a water-based self-emulsifying epoxy resin emulsion.

Embodiment 2

[0029] Add 100g E-44, 10g PEG-4000 (molecular weight 4000), 10g Bis-A, 0.6g triphenylphosphine catalyst and 10g methyl ethyl ketone into the reaction flask together, heat to 100°C, after 5 hours of reaction, start to cool down, the temperature drops When the temperature reaches 60° C., slowly add 150 g of deionized water under high-speed stirring. After the water is completely added, stir for 1 hour and filter to obtain a water-based self-emulsifying epoxy resin emulsion.

Embodiment 3

[0031] Add 100g E-44, 40g PEG-2000, 5g glycerin, 0.6g triphenylphosphine catalyst and 5g methyl ethyl ketone into the reaction flask together, heat to 120°C, after 4 hours of reaction, start to cool down, when the temperature drops to 80°C, Under high-speed stirring, slowly add 50 g of deionized water, after the water is completely added, stir for another 2 hours, and filter to obtain a water-based self-emulsifying epoxy resin emulsion.

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Abstract

The invention provides an aqueous self-emulsifying epoxide resin latex emulsion and a preparation method thereof. The invention adopts a one-step method to prepare the aqueous self-emulsifying epoxide resin latex emulsion. While the performance of the latex emulsion is maintained to be good, the preparation method has the advantages of simple operation and energy conservation, and can be widely applied to environment-friendly paint, cementing compound, etc.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a water-based self-emulsifying epoxy resin emulsion and a preparation method thereof. Background technique [0002] Traditional epoxy resins are solvent-based and powder-based, with good strength, wear resistance, chemical resistance, corrosion resistance, etc. However, the coating density of powder-type epoxy resin is poor, and the construction is difficult, and it needs some special equipment to construct; solvent-type epoxy resin will volatilize a large amount of solvent during the construction process, pollute the environment, and some toxic solvents (such as triphenyls) will also have a relatively large harmful effect on the human body. In recent years, laws and regulations on environmental pollution restrictions have been promulgated one after another, and zero-VOC or low-VOC systems have become the research direction of new materials. Water-based epoxy resin has many adv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08G59/14C08J3/03
Inventor 吕满庚兰延勋
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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