Process for fluorimetric monitoring of functional coatings and compositions and fluorescent agents therefor
Abstract
Abstract A method for monitoring the coating weight, uniformity, defects or markings present in a coating of a composition applied to a substrate comprises the steps: (a) providing a substrate with a functional coating of a composition comprising an effective amount of uvescer that absorbs radiant energy, i.e., has excitation energy, of wavelength λ 1 and emits radiant energy of wavelength λ 2 ; (b) scanning the coating with radiant energy having a wavelength within wavelength λ 1 ; (c) detecting the radiant energy of wavelength λ 2 emitted by the coating; and (d) optionally, correlating the emitted radiant energy to independently measured standard coating weights or thicknesses, of the coating so as to measure coating weight, thickness, uniformity, defects, or markings. The invention also provides novel siloxane polymers containing fluorene uvaphores which are useful in the coating comopsition of the invention.
Inventors
- 👤 Kurt C. Melancon
- 👤 George V. D. Tiers
Bibliographic Details
Claims Analysis
Total Claims: 6References Cited (Backward Citations)
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