Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Viscosity
Reexamination Certificate
2007-03-06
2007-03-06
Williams, Hezron (Department: 2856)
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Viscosity
C073S054280
Reexamination Certificate
active
11024912
ABSTRACT:
The present invention is directed to an apparatus and a method for monitoring the viscoelastic properties, of a liquid film (e.g. coating). The apparatus comprises a substrate supporting a liquid film, a probe to contact the liquid film, means for effecting relative movement between the probe and the substrate and means for monitoring the resistance to movement of the probe in contact with the film to obtain a measurement of the solidification properties of the liquid film. This apparatus and method are particularly useful in comparing the effects of film formers, viscosity modifiers, solvents, and minerals on the drying rate of coatings at the early stage of film formation.
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J. Polymer Science, Part C, No. 35, pp. 3-21, 1971.
Macosko, “Rheology, Principles, Measurements and Applications”, Chapter 5, VCH Publishers, Inc., 1994.
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Posey-Dowty Jessica Dee
Seo Kab Sik
Eastman Chemical Company
Graves, Jr. Bernard J.
Taylor Tammye L.
West Paul M.
Williams Hezron
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