From the investigation of the electrodeposition coating mechanism occuring in the enclosed system such as the inside surface of a steel pipe, authors have reported previously that the throwing power Th determined by a pipe test is caluculated in accordance with next Th2= (a/L) σ;·E (S/I) Authors have developed the apparatus for calculating, indicating and recording automatically Th with this formula. In order to measure the throwing power Th of an electrodeposition coating solution by this apparatus, at first, the a/L is set up to the predetermined constant which is decided by the pipe dimension. Secondly, the specific conductivity σ; of the coating solution, the applied voltage E, and the surface area S of the anode are measured and these values are set up on the dial of this apparatus. Finally, the current I through the anode which has an approximately uniform current density is inducted as the only input signal which varies with the time. Then, this apparutus gives the chart on which the throwing power Th is shown versus electrodeposition time t. Comparing Th-t curves with Several applied Voltage processes, it became clear that Th-t curves are not so more influenced for the zinc phosphate treatment steel panel than the untreatment one.
Several fungicidal polymers were synthesized by the following methods. Polychloro compounds, such as pentachlorophenol, 2, 4-dichlorophenoxyacetic acid, and 4-amino-3, 5, 6-trichloropicolinic acid were adducted to the side chains of polyethylenimine and protein using triazine trichloride and acrolein. These polymers were irreversibly retained on the cellulosic fiber and the polymer treated fibers exhibited antifungus properties for a long period.
It is useful and convenient for assessing the rheological property of cosmetic products to obtain their flow characteristics by means of the cone and plate viscometer. Though the Ferranti-Shirley viscometer is the most usual among the viscometers of this kind, it has an uncertain point in detecting the torque added to the cone. The Authers noticed and improved on this point, then completed a new piece of equipment of the same kind, so the results are we introduced on this viscometer. Comparing the rheograms of Newtonian fluid acquired by this and the Ferranti-Shirley viscometer, one can recognize that it has higher fidelity than the latter. On the other hand, we showed several rheograms of various cosmetic products are Shown and the analysis of characteristics of them gave this viscometer the possibility to be used in wider range.