Tagged cellulose ester films
AssigneeCelanese Acetate LLC
InventorsRaymond M. Robertson, David Nyy
Life of this patent
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Abstract
Cellulose ester films may include taggants to provide for product authentication and counterfeit identification, especially in packaging applications. In some instances, a tagged cellulose ester film may include cellulose ester, a plasticizer, and a taggant, wherein the taggant comprises at least one taggant component selected from the group consisting of an elemental marker, a molecular fluorophore, a particulate fluorophore, and any combination thereof.
Claims20
A tagged cellulose ester film comprising cellulose ester, a plasticizer, and a taggant, wherein the taggant comprises one or more taggant components selected from the group consisting of elemental markers, molecular fluorophores, particulate fluorophores, and any combination thereof.
A method comprising:
- preparing a dope that comprises cellulose ester, a plasticizer, a solvent, and a taggant, wherein the taggant comprises one or more taggant components selected from the group consisting of elemental markers, molecular fluorophores, particulate fluorophores, and any combination thereof;
- and
- casting the dope into a tagged cellulose ester film.
A method comprising:
- preparing a dope that comprises cellulose ester, plasticizer, and a solvent;
- casting the dope into a cellulose ester film;
- and
- applying a taggant to the cellulose ester film to yield a tagged cellulose ester film, wherein the taggant comprises one or more taggant components selected from the group consisting of elemental markers, molecular fluorophores, particulate fluorophores, and any combination thereof.
Dependencies are inferred from the claim text.