カルボン酸型ビルダー溶液の物理化学性

抄録

The effects of the physico-chemical properties of the aqueous solution of 38 carboxylate builders (Table-1) on detergencies have been studied. The correlation between the building activity and molecular structure has been discussed.
The detergency tests were carried out on naturally soiled cotton fablics and the detergency powers were evaluated by Scheffe's method. Measurements were made on the surface tension, the critical micelle concentration, the emulsifying and solubilization capacities of the builder solution with DBS. The buffering and dispersing capacities for carbon black and manganese dioxide of the aqueous builder solution, and the chelate stability constants of the builders with alkaline earth metals were determined.
These results indicate that the washing efficiencies of formulations containing the carboxylate builder correlate well with their dispersing capacities for manganese dioxide (Fig.-7) and chelate stability constants with calcium ions (Fig.-8). Other physico-chemical properties of the builder solutions have no relation to their washing efficiencies.