Thixotropy and Dielectric Constant of Printing Inks


INVESTIGATING the electric properties of printing inks, it was observed that the dielectric constant of an ink depends on the time it stands undisturbed in the measuring condenser. For dielectric constant determinations a commercial Philips measuring bridge, a Philoscope, was used at frequencies 50 H and 1,000 H. The polarization capacity and the polarization resistance could not be measured.


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