Tagging materials for polymers, methods, and articles made thereby
First Claim
1. A method for identifying a polycarbonate polymer, comprising providing in the a polycarbonate polymer at least one and a tagging material wherein the tagging material comprises at least one organic fluorophore dye, or at least one inorganic fluorophore, or at least one organometallic fluorophore, or at least one semi-conducting luminescent nanoparticle, or a combination thereof, wherein the tagging material has a temperature stability of at least about 350°
- C. and is present in a sufficient quantity such that the tagging material is detectible via a spectrofluorometer at an excitation wavelength in a range between about 100 nanometers and about 1100 546 nanometers, and wherein the tagging material is uniformly dispersed throughout the polycarbonate polymer or dispersed in a portion of the polycarbonate polymer by means of an extruder or injection molder during melt polymerization of the polycarbonate polymer whereby a sample of the polymer composition can be identified or distinguished from samples of other polymers containing no or different tagging materials, and identifying the polymer based on the detected tagging material.
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Abstract
A polymer comprising a tagging material is provided wherein the tagging material comprises at least one organic fluorophore dye, or at least one inorganic fluorophore, or at least one organometallic fluorophore, or at least one semi-conducting luminescent nanoparticle, or combination thereof, wherein the tagging material has a temperature stability of at least about 350° C. and is present in a sufficient quantity such that the tagging material is detectible via a spectrofluorometer at an excitation wavelength in a range between about 100 nanometers and about 1100 nanometers. Further embodiments of the present invention include a method for identifying a polymer and an article comprising a polymer wherein the polymer contains the aforementioned tagging material.
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Citations
72 Claims
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1. A method for identifying a polycarbonate polymer, comprising providing in the a polycarbonate polymer at least one and a tagging material wherein the tagging material comprises at least one organic fluorophore dye, or at least one inorganic fluorophore, or at least one organometallic fluorophore, or at least one semi-conducting luminescent nanoparticle, or a combination thereof, wherein the tagging material has a temperature stability of at least about 350°
- C. and is present in a sufficient quantity such that the tagging material is detectible via a spectrofluorometer at an excitation wavelength in a range between about 100 nanometers and about 1100 546 nanometers, and wherein the tagging material is uniformly dispersed throughout the polycarbonate polymer or dispersed in a portion of the polycarbonate polymer by means of an extruder or injection molder during melt polymerization of the polycarbonate polymer whereby a sample of the polymer composition can be identified or distinguished from samples of other polymers containing no or different tagging materials, and identifying the polymer based on the detected tagging material.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 70)
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23. A method for identifying a polycarbonate, comprising providing in the polycarbonate at least one tagging material wherein the tagging material comprises a perylene, wherein the perylene has a temperature stability of at least about 350°
- C., is present in a range between about 10−
18 percent by weight and about 2 percent by weight of the total polycarbonate and is detectable via a spectrofluorometer at an excitation wavelength in a range between about 100 nanometers and about 1100 546 nanometers.
- C., is present in a range between about 10−
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24. A polymer composition comprising
(a) a polycarbonate polymer, and (b) a tagging material wherein the tagging material comprises at least one organic fluorophore dye, or at least one inorganic or organometallic fluorophore, or at least one semi-conducting luminescent nanoparticle, or combination thereof, wherein the tagging material has a temperature stability of at least about 350° - C. and is present in a sufficient quantity such that the tagging material is detectable via a spectrofluorometer at an excitation wavelength in a range between about 100 nanometers and about 1100 546 nanometers, wherein the tagging material is uniformly dispersed throughout the polycarbonate polymer or dispersed on a portion of the polycarbonate polymer by means of an extruder or injection molding during melt polymerization of the polycarbonate polymer, whereby a sample of the polymer composition can be identified or distinguished from samples of other polymers containing no or different tagging materials.
- View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 71)
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46. A polycarbonate comprising a perylene, wherein the perylene has a temperature stability of at least about 350°
- C. and is present in a range between about 10−
18 percent by weight and about 2 percent by weight of the total polycarbonate and is detectible via a spectrofluorometer at an excitation wavelength in a range between about 100 nanometers and about 1100 nanometers.
- C. and is present in a range between about 10−
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47. An article comprising a polymer composition wherein the polymer composition comprises
(a) a polycarbonate polymer, and (b) a at least one tagging material wherein the tagging material comprises at least one organic fluorophore dye, or at least one semi-conducting luminescent nanoparticle, or combination thereof, wherein the tagging material has a temperature stability of at least about 350° - C. and is present in a sufficient quantity such that the tagging material is detectible via a spectrofluorometer at an excitation wavelength in a range between about 100 nanometers and about 1100 546 nanometers, wherein the tagging material is uniformly dispersed throughout the polycarbonate polymer or dispersed on a portion of the polycarbonate polymer by means of an extruder or injection molder during melt polymerization of the polycarbonate polymer, whereby a sample of the polymer composition can be identified or distinguished from samples of other polymers containing no or different tagging materials.
- View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 72)
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69. A storage medium for data comprising a polycarbonate wherein the polycarbonate comprises a perylene wherein the perylene has a temperature stability of at least about 350°
- C., is present in a range between about 10−
18 percent by weight and about 2 percent by weight of the total polycarbonate, and is detectabile via a spectrofluorometer at an excitation wavelength in a range between about 100 nanometers and about 1100 nanometers.
- C., is present in a range between about 10−
Specification