Leveling agent for cationic electrodeposition coatings
A cationic electrodeposition and leveling agent technology, which is applied in the field of leveling agents, can solve the problems of electrophoresis tank damage voltage drop, cycle stability deterioration, paint film leveling deterioration, etc., to achieve excellent substrate wetting ability, Improved stability and excellent binding force
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Embodiment 1
[0024]
[0025]
[0026] The molecular formula of polyglycolamine H-163 is H 2 N-(CH 2 ) 3 -(O-CH 2 -CH 2 ) 2 -OH, available from Union Corbide;
[0027] In a reaction flask equipped with a thermometer, a stirrer and a reflux condenser, sequentially add the prescribed amount of neopentyl glycol diglycidyl ether, bisphenol A, and ethylene glycol monobutyl ether. After heating up to 100°C, add the dimethylbenzylamine catalyst. After the addition, first raise the temperature to 150-170°C to react for 120 minutes. When the epoxy equivalent of the system reaches 850-950, the temperature reaches 70-75°C, quickly add the amine, and finish adding Afterwards, the temperature was raised to 110-120°C for 2 hours. After the reaction, cool down to 60-65°C, add lactic acid, react at 50-60°C for 30 minutes, add pure water and cool down to below 25°C, and finally prepare a leveling agent with a solid content of 33-34%.
Embodiment 2
[0029]
[0030] The molecular formula of polyetheramine M-600 is H 2 N-(CHCH 3 -CH 2 -O) 9 -CH 2 -CH 2 -O-CH 3 , JEFFAMINE;
[0031] In a reaction flask equipped with a thermometer, a stirrer and a reflux condenser, sequentially add the prescribed amount of neopentyl glycol diglycidyl ether, bisphenol A, and ethylene glycol monobutyl ether. After heating up to 100°C, add the dimethylbenzylamine catalyst. After the addition, first raise the temperature to 150-170°C to react for 120 minutes. When the epoxy equivalent of the system reaches 850-950, the temperature reaches 70-75°C, quickly add the amine, and finish adding Afterwards, the temperature was raised to 110-120°C for 2 hours. After the reaction, cool down to 60-65°C, add lactic acid, react at 50-60°C for 30 minutes, add pure water and cool down to below 25°C, and finally prepare a leveling agent with a solid content of 33-34%.
Embodiment 3
[0033]
[0034] The molecular formula of polyetheramine M-600 is H 2 N-(CHCH 3 -CH 2 -O) 9 -CH 2 -CH 2 -O-CH 3 , JEFFAMINE;
[0035] In the reaction flask equipped with a thermometer, a stirrer and a reflux condenser, sequentially add the formula amount of polyethylene glycol diglycidyl ether, bisphenol A, and ethylene glycol monobutyl ether. After heating up to 100°C, add the dimethylbenzylamine catalyst. After the addition, first raise the temperature to 150-170°C to react for 120 minutes. When the epoxy equivalent of the system reaches 1050-1150, the temperature reaches 70-75°C, quickly add the amine, and finish adding Afterwards, the temperature was raised to 110-120°C for 2 hours. After the reaction, cool down to 60-65°C, add lactic acid, react at 50-60°C for 30 minutes, add pure water and cool down to below 25°C, and finally prepare a leveling agent with a solid content of 33-34%.
[0036] Second, the preparation of amino-modified novolak epoxy resin
[0037]...
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