Water epoxy resin coating and preparing process thereof
A water-based epoxy resin and epoxy resin technology, used in epoxy resin coatings, coatings, latex paints, etc., can solve the problems of high cost, few reports on curing agents, and slow commercialization of water-based epoxy anti-corrosion coatings. , to achieve the effect of moderate response speed and guaranteed pot life
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Embodiment 1
[0050] (1) Synthesis of water-based epoxy curing agent
[0051] (a) capping
[0052] Equip the four-necked bottle with a stirring device, a thermometer and a reflux device. First add 145g triethylenetetramine (TETA, 1 mole), then add 130g butyl glycidyl ether in batches, control the reaction temperature to 60°C, and the reaction time is 2 hours, the product is light yellow viscous liquid.
[0053] (b) addition
[0054] Add 42g of 601 epoxy resin into the four-neck bottle, then add 30g of ethylene glycol monoethyl ether, and heat to 80°C to completely dissolve the resin. Cool the resin solution to about 40°C, then add 23g of the above-mentioned end-capped product, slowly raise the temperature, control and maintain the reaction temperature at about 90°C, and react for 2 hours.
[0055] (c) into salt
[0056] Add 5g of acetic acid into the reactant, maintain the temperature at about 90°C, and react for another hour.
[0057] (d) dissolve
[0058] Add 175g of water at 90°C a...
Embodiment 2
[0073] (1) Synthesis of water-based epoxy curing agent
[0074] (a) capped
[0075] Equip the four-necked bottle with a stirring device, a thermometer and a reflux device. First add 145g triethylenetetramine (TETA, 1 mole), then add 150g phenyl glycidyl ether in batches, control the reaction temperature to 55°C, and the reaction time is 150 minutes, the product is a light yellow viscous liquid.
[0076] (b) addition
[0077] Add 42g of 601 epoxy resin into the four-neck bottle, then add 30g of ethylene glycol monoethyl ether, and heat to 80°C to completely dissolve the resin. Cool the resin solution to about 40°C, then add 24.7g of the above-mentioned capped product, slowly raise the temperature, control and maintain the reaction temperature at about 90°C, and react for 2 hours.
[0078] (c) into salt
[0079] Add 10 g of acetic acid to the reactant, maintain the temperature at about 90° C., and react for another hour.
[0080] (d) dissolve
[0081] Add 150 g of water at...
Embodiment 3
[0096] (1) Synthesis of water-based epoxy curing agent
[0097] (a) capping
[0098] Equip the four-necked bottle with a stirring device, a thermometer and a reflux device. First add 145g triethylenetetramine (TETA, 1 mole), then add 306g alkyl glycidyl ether in batches, control the reaction temperature to 65°C, and the reaction time is 100 minutes, the product is light yellow viscous liquid.
[0099] (b) addition
[0100] Add 16g of 618 epoxy resin into the three-necked bottle, then add 8g of ethylene glycol monoethyl ether, and heat to 80°C to completely dissolve the resin. Cool the resin solution to about 40°C, then add 38g of the above-mentioned capped product, slowly raise the temperature, control and maintain the reaction temperature at about 95°C, and react for 1.5 hours.
[0101] (c) into salt
[0102] 5g of acetic acid was added to the reactant, the temperature was maintained at 95°C, and the reaction was continued for 50 minutes.
[0103] (d) dissolve
[0104] ...
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