Thermoplastic polymer composition having admixed therein one or more monomeric near-infrared fluorescing compounds

• Main Authors: KRUTAK, JAMES J., SR, CUSHMAN, MICHAEL R, PARHAM, WILLIAM W, COATES, CLARENCE A., JR, WEAVER, MAX A, PATONAY, GABOR
• Format: Patent
• Language: English; French; German
• Published: 13.03.1996
• Edition: 6
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DYES; HETEROCYCLIC COMPOUNDS; LAKES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MORDANTS; NATURAL RESINS; ORGANIC CHEMISTRY; ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PERFORMING OPERATIONS; POLISHES; POSTAL SORTING; SEPARATING SOLIDS FROM SOLIDS; SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTEDPIECE-MEAL, e.g. BY PICKING; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

Provided are compounds effective in a method for "marking" or "tagging" a thermoplastic polymeric material by incorporating one or more thermally stable, near infrared fluorescing compounds therein by admixing or copolymerizing or by blending with certain condensation polymers containing one or more near infrared fluorescing compounds copolymerized or admixed therein and a method for separating or sorting a mixture of thermoplastic containers such as bottles. In particular, provided are thermoplastic polymer compositions tagged with such compounds or residues.