Abstract: The cationic／nonionic waterborne epoxy esters were synthesized from epoxy， tall oil fatty acid， polyether amine M2070， N，N-dimethyl-1，3-propanediamine （DMPDA） and diethanolamine （DEA）. The effects of the cationic／nonionic hydrophilic monomer on the basic properties， particle size and distribution of the emulsion and the properties of the coating were studied. The results showed that the emulsion exhibited optimal performance， meanwhile， its film showed high hardness up to H，adhesion 1， water resistance 168 h， acid resistance 36 h， alkali resistance 36 h and impact resistance up to 50 cm when the cation content was 32 mmol／100 g and the nonionic content was 3.5％.
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