Eastman-kodak Company

Eastman Chemical Company

Other

William C Gose

Kenneth W Hyche

Theron E Parsons, Iii

Douglas Grant Atkins

Jeffrey James Vanderbilt

James P Cleveland

This invention provides a method for rendering a water-based coating (i.e., one which contains essentially no organic solvent) fluorescent. Also provided is a method for measuring the extent of coverage and thickness of a water-based coating by incorporating therein a minor amount of an emulsion of an insoluble compound which absorbs ultraviolet light and fluoresces strongly in the visible region of the spectrum, so that the intensity of the fluorescence serves as an indication of the degree of coverage and thickness of the film. Also provided is a method for enhancing the apparent brightness of a film pigmented with light colored pigments. In the case where white pigments such as titanium dioxide are used, the effect is to increase the apparent whiteness of the film.

Method for dispersing optical brighteners in waterborne coating

Aqueous application systems for applying additives to polymeric particles, methods of preparing aqueous emulsions which include at least one processing, stabilizing or other functional polymer additive and an emulsifiable wax. Also disclosed are methods of applying additives to polymeric particles and to polymeric particles treated by such methods.

Aqueous additive systems, methods and polymeric particles

Aqueous application systems for applying additives to polymeric particles, methods of preparing aqueous emulsions which include additives having a high melting point, additives having a low melting point and an emulsifiable wax. Also disclosed are methods of applying additives to polymeric particles and to polymeric particles treated by such methods.

2-Chloropyrimidines are prepared by treating 2-mercaptopyrimidines with chlorine or sulfuryl chloride in the presence of one or more C.sub.2 -C.sub.4 carboxylic acids and in the absence of significant amounts of water.

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Kingsport, TN, United States of America

William C Gose