A method of dispersing a self-emulsifying crosslinker, the obtained crosslinker dispersion and its applicaton in e-coat having low baking temperature

A method of dispersing a self-emulsifying crosslinker comprising at least two steps:

• i) preparing an aqueous acid dispersion (I) of a self-emulsifying crosslinker, wherein the microstructure of liquid phase of said aqueous acid dispersion (I) is water-in-oil;
• wherein a solid content of said aqueous acid dispersion (I) in step i) is from 45% to 75% by weight, based on the total weight of said aqueous acid dispersion (I);
• and
• ii) adding water into said aqueous acid dispersion (I) to obtain an aqueous acid dispersion (II), wherein the microstructure of liquid phase of said aqueous acid dispersion (II) is oil-in-water;
• wherein a detected maximum temperature (Tmax) of said aqueous acid dispersion (II) in step ii) is no more than 40° C.