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US 6,779,382 B2Granted
Process for determining changes in liquid media, in particular coating agents under shear stress
AssigneeE. I. Du Pont de Nemours and Company
InventorsPaul Rupieper, Michael Höffer, Christian Voyé
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Abstract
A process for determining changes in a liquid medium, in particular a liquid coating agent or its components, caused by shear stress, in which a given volume of the medium is allowed to pass repeatedly through a shear unit under reproducible conditions.
Claims3
A process comprising:
- a) applying shear stress within a closed, deaerated pipe system to a liquid coating agent by passing a given volume of the liquid coating agent to be tested under defined, reproducible, and uniform shear stress conditions repeatedly through a shear unit comprising a determinable constriction in cross-section within the closed pipe system;
- wherein the liquid coating agent comprises a liquid and a compound selected from the group consisting of pigments, fillers, and mixtures thereof;
- and
- b) determining changes of properties in the liquid coating agent as a function of shear stress.
1 more element
Dependencies are inferred from the claim text.