A total of 470 g of an aqueous dispersion medium was prepared, which consisted of 80.5 g of colloidal silica having a solid content of 20%, 3.0 g of a 50% aqueous solution of a diethanolamine-adipic acid condensation product, 164.1 g of sodium chloride ........
50% aqueous solution of a diethanolamine-adipic acid condensation product这句到底是什么东西啊？麻烦大家了
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