E.i. Dupont De Nemours and Company

Timothy Aaron Snyder

Ken Stephen Schermacher

Anthony Joseph Martino

Larry Eugene Steenhoek

Robert E Bucher

Robert Averitt

Allan Blase Joseph Rodrigues

Douglas Eric Spahr

An apparatus for inspection of fluids having a fluid analysis cell with a cavity therein enclosed by two light transmitting windows and having a spacer member fixedly positioned therebetween which provides a fluid analysis chamber of fixed pathlength where fluid flows by the windows and preferably wherein the flow laminar and at a uniform shear to provide accurate color measurements. Light transmitting and receiving probes are positioned adjacent to the viewing windows and wherein the faces of each probe are contiguous and flush with the viewing windows but are separated from the flow by the viewing windows, so that transmission measurements can be taken orthogonal to the direction of flow. The apparatus is particularly useful in the manufacture of dispersions and tints used in the manufacture of paints, so that the color of material being made can be accurately matched to a standard color in the wet state with confidence that the color will match in the dry state.

Method and apparatus for measuring the color properties of fluids

A rapid process for making transparent tints that match the color and tinting strength of a standard tint. The process involves the use of a faster and more accurate shading technique that utilizes the light transmittance properties of the tints in the wet over the visible spectrum and calculates therefrom the amount of components required to bring the tint within an acceptable match to the standard.

Process for manufacturing transparent tints

Growing community of inventors

Wilmington, DE, United States of America

Timothy Aaron Snyder