Fiber coating composition having an invisible marker and process for making same
US6217794A · kind A · utility
10Cited by
78References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1999 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Apr 30, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12875
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.