Abstract
We report on the experiment that sodium perborate polycompounds (surface active agent P. C. B) is used 0, 1, 2 % for assistant in 15 % caustic soda cooking to “ Kozo Kuro kawa” of Yaguchi Prefecture growth.
As the results of the experiments, we recognized that the addition of 1 % P. C. B was especially fine and, yield of bleaching pulp and paper was each increased by 5.5 % and 3 %. respectively. From the result of chemical analysis, the increase of yield consists in pentosan ond wax.
In the addition of P. C. B 2 %, strength, quality, stiffness of paper and yield were decreased.
