Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1995-10-17
1997-07-22
Mulcahy, Peter D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524558, 524567, 25230121, 25230122, 25230123, 25230124, 25230127, C08K 534
Patent
active
056504551
ABSTRACT:
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.
REFERENCES:
patent: 4137208 (1979-01-01), Elliott
patent: 4741860 (1988-05-01), Hartmann
patent: 4911830 (1990-03-01), Bromley et al.
Atkins Douglas G.
Gose William C.
Parsons, III Theron E.
Eastman Chemical Company
Graves, Jr. Bernard J.
Gwinnell Harry J.
Mulcahy Peter D.
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