ABSTRACT

The total solids content of a latex is the percentage by mass of the whole, which is nonvolatile at 105°C for 2 hours in an open atmosphere oven. A quantity of latex is weighed in a flat-bottomed glass dish (m

) and dried in an oven at 105 ± 5°C to the constant weight in 2 hours, and the remaining polymer film is weighed again to find the quantity of the weight of the residue (m). The ratio of the remaining solids over the total initial weight (100m/m

) gives the total solids content.