Fiber coating composition having an invisible marker and process for making same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Apr 17, 2001
Grant Date -
N/A
app pub date -
Apr 30, 1999
filing date -
Jun 1, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Fibers having at least one near-infrared fluorescing compound associated therewith are prepared by contacting the fibers with the fluorescing compound(s) dissolved in an organic solvent. Suitable organic solvents include ketones and alcohols. The fibers may subsequently be air-dried to remove any remaining volatiles. Fibers coated with the marker solution desirably have less than 1 weight percent of the marker coated thereon.
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