Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Reexamination Certificate
2005-03-29
2010-06-01
Walke, Amanda C. (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
C430S270150, C430S905000, C430S945000
Reexamination Certificate
active
07727702
ABSTRACT:
A method is provided for irreversibly coloring a coating composition containing a color former comprising the steps ofa) providing a coating composition that contains an UV curable resin, a thermosetting resin or an alkyd resin with the proviso that the coating composition contains no developer nor any additive which may function as developer;b) mixing the coating composition with the color former whereby no color is formed;c) applying the colorless composition obtained in step b) to a substrate;d) in case of a thermosetting resin curing the resin between 100 and 300° C., preferably between 100 and 150° C., whereby no color is formed, in case of alkyd resin drying of the resin at room temperature, whereby no color is formed;e) exposure to UV or high energy radiation below 400 nm whereby the color is formed.
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Benkhoff Johannes
Powell Karin
Ciba Specialty Chemicals Corp.
Suhadolnik Joseph C.
Walke Amanda C.
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