Fluorescent tracer for water-soluble films, related methods, and related articles
US9150782B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2014 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Dec 5, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/6439
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed herein are fluorescent tracer compositions and water-soluble polymer compositions containing fluorescent compounds for tracing one or more components in the polymer compositions. More particularly, the disclosure relates to fluorescent tracer compositions including a fluorophore and a bitterant aversive component to be incorporated into a water-soluble polymer composition such as a water-soluble film. An aversive compound such as a bitterant is desirably incorporated into the polymer composition as a deterrent to ingestion of the polymer composition (or an article made therefrom). Qualitative or quantitative detection of the fluorophore in the polymer composition can be correlated to a qualitative or quantitative detection of a corresponding traced material in the polymer composition, for example the bitterant aversive component. Related articles and methods for making and using the polymer compositions are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.