Authenticatable media and method of authenticating

One method for playing a disk, comprises illuminating a first portion of the optical article with a first laser to obtain a first optical signal, wherein the first laser has a first wavelength, illuminating a second portion with a second laser to obtain a second optical signal, wherein the second laser has a second wavelength that is different from the first wavelength, and determining if the optical article is authentic by comparing the first optical signal and the second optical signal.

Chemical compositions for authenticatable polymers and articles, and authentication methods thereof

Disclosed are compositions comprising at least one [benzo[4,5]imidazo(heterocycle)] compound, said [benzo[4,5]imidazo(heterocycle)] compound selected from the group consisting of structures I and II, wherein R¹ and R² are independently selected from the group consisting of a hydrogen atom, electron withdrawing group, organic group, divalent 1,2-cycloalkylidene group, or combinations thereof; "q" is independently an integer from 1-4, L is a linking group, and "r" is independently 0 or 1; said at least one [benzo[4,5]imidazo(heterocycle)] compound being present at a concentration sufficient to cause said composition to exhibit upon exposure to an excitation radiation having a wavelength of from about 330 nanometers to about 390 nanometers, a maximum fluorescence emission wavelength of greater than or equal to about 470 nanometers; and a Stokes shift of greater than or equal to about 80 nanometers; wherein the wavelengths are measured in bisphenol A polycarbonate matrix ...

POLYETHERIMIDE POWDERS FOR ADDITIVE MANUFACTURING

Provided are amorphous and at least partially crystalline polyetherimide compositions having a comparatively narrow particle size distribution and are particularly suited for additive manufacturing processes. The compositions comprise a population of polyetherimide particulates are characterized as having a zero-shear viscosity sufficiently low so as to achieve a coalescence of at least 0.5, and preferably of about 1.0, as characterized by the Frenkel model at a temperature less than 450° C. 1. A composition , comprising: 'a) a Dv50 value, for equivalent spherical sizes of the population of polyetherimide particulates, of between about 10 and about 100 micrometers;', 'a population of polyetherimide particulates having'}b) a Dv10 value, for equivalent spherical sizes of the population of polyetherimide particulates above about 1 micrometer, andc) a Dv90 value, for equivalent spherical sizes of the population of polyetherimide particulates, below about 250 micrometers,the population of polyetherimide particulates optionally being essentially free of particulates less than about 1 micrometer in diameter, based on the equivalent spherical size of the polyetherimide particulates,the composition optionally comprising one or more tillers, stabilizers, pigments, reinforcing agents, flame retardants, anti-drip agents, or any combination thereof, andthe composition being characterized as having a zero-shear viscosity sufficiently low so as to achieve a coalescence of at least 0.5.2. The composition of claim 1 , w-herein the polyetherimide particulates have a sphericity of greater than 0.8.3. The composition of claim 1 , wherein the population of polyetherimide particulates are amorphous claim 1 , at least partially crystalline claim 1 , or a mixture thereof.4. The composition of claim 1 , wherein the composition further comprises a flow promoter in particulate form and wherein the flow promoter is present at from about 0.025 wt % to about 1.0 wt % in weight with respect to ...

COPOLYCARBONATE COMPOSITIONS

A copolycarbonate composition is provided comprising a blend of a polycarbonate-polysiloxane copolymer and a terephthalate polymer. The blend has a combination of good melt volume rate, good fatigue resistance, and high ductility at low temperatures.

High reflectance polycarbonate

In an embodiment, a polycarbonate composition comprises: polycarbonate; 7 wt % to 20 wt % titanium dioxide, based upon a total weight of the polycarbonate composition; an optional flame retardant; and an optional UV stabilizer. A plaque formed from the polycarbonate composition has a reflectance of greater than or equal to 95%, as determined by reflectance measurements using a Gretag Macbeth Coloreye spectrophotometer (D65 light source, 10 degree observer, UV included) made at a wavelength of 680 nm. In an embodiment, a polycarbonate composition comprises: a polycarbonate; 7 to 20 wt % titanium dioxide; a flame retardant; and an optional UV stabilizer; wherein the polycarbonate composition has a maximum reflectance of greater than or equal to 95%. The melt volume rate as determined at 300° C. using a 1.2 kilogram weight, in accordance with ASTM D1238-04 is from 5 to 30 grams per 10 minutes.

Method of authenticating tagged polymers

Disclosed is a method of authenticating that a test polymer is a tagged polymer comprising a substrate polymer, a compound comprising a forensic authentication marker, and a dynamic response authentication marker, said forensic authentication marker being present in the tagged polymer in an amount sufficient to be detected by a forensic analytical technique and said dynamic response authentication marker being present in the tagged polymer in an amount sufficient to be detected by a dynamic response analytical technique, said method of authenticating comprising testing the test polymer for the forensic authentication marker using a forensic analytical technique, testing the test polymer for the dynamic response authentication marker using a dynamic response analytical technique, and authenticating that a test polymer is a tagged polymer if the forensic authentication marker and dynamic authentication marker are detected.

Chemical compositions for authenticatable polymers and articles, and authentication methods thereof

Disclosed are compositions comprising at least one [benzo[4,5]imidazo(heterocycle)] compound, said [benzo[4,5]imidazo(heterocycle)] compound selected from the group consisting of structures I and II, wherein R1 and R2 are independently selected from the group consisting of a hydrogen atom, electron withdrawing group, organic group, divalent 1,2-cycloalkylidene group, or combinations thereof; “q” is independently an integer from 1-4, L is a linking group, and “r” is independently 0 or 1; said at least one [benzo[4,5]imidazo(heterocycle)] compound being present at a concentration sufficient to cause said composition to exhibit upon exposure to an excitation radiation having a wavelength of from about 330 nanometers to about 390 nanometers, a maximum fluorescence emission wavelength of greater than or equal to about 470 nanometers; and a Stokes shift of greater than or equal to about 80 nanometers; wherein the wavelengths are measured in bisphenol A polycarbonate matrix.

High reflectance polycarbonate

In an embodiment, a polycarbonate composition comprises: polycarbonate; 7 wt % to 20 wt % titanium dioxide, based upon a total weight of the polycarbonate composition; an optional flame retardant; and an optional UV stabilizer. A plaque formed from the polycarbonate composition has a reflectance of greater than or equal to 95%, as determined by reflectance measurements using a Gretag Macbeth Coloreye spectrophotometer (D65 light source, 10 degree observer, UV included) made at a wavelength of 680 nm. In an embodiment, a polycarbonate composition comprises: a polycarbonate; 7 to 20 wt % titanium dioxide; a flame retardant; and an optional UV stabilizer; wherein the polycarbonate composition has a maximum reflectance of greater than or equal to 95%. The melt volume rate as determined at 300° C. using a 1.2 kilogram weight, in accordance with ASTM D1238-04 is from 5 to 30 grams per 10 minutes.

Colored optical discs and methods for making the same

Embodiments of optical discs and methods for making the same are disclosed. In one embodiment, the optical disc comprises: at least two plastic substrates comprising a bonding layer and a data layer disposed therebetween, wherein at least one of the substrates is a read side substrate comprising greater than or equal to about 0.05 wt % colorant, based upon the total weight of the read side substrate, and wherein the read side substrate has a UV Bonding Index of greater than or equal to about 0.5. One method for making the optical disc comprises: forming a first plastic substrate comprising greater than or equal to about 0.05 wt % colorant, based upon the total weight of the first plastic substrate, wherein a UV Bonding Index of the first plastic substrate is controlled to be greater than or equal to about 0.5, disposing a data layer between the first plastic substrate and a second substrate, bonding the first plastic substrate to the second plastic substrate with a bonding layer, and curing ...

Marked article and method of making the same

A method of marking a thermoplastic article can comprise: combining a thermoplastic with a light-marking additive to form a composition, forming the composition into an article having a maximum optical absorption wavelength; and illuminating, at a marking wavelength, at least a portion of the article with a device having a power of less than or equal to about 200 mW, to form a light-mark. The light-mark can have a size, as measured along a major axis, of greater than or equal to about 10 micrometers. The light-mark can also have a mark absorption wavelength that is greater than or equal to about ±100 nm of the maximum optical absorption wavelength, and can have a spectral absorption curve.

Marked article and method of making the same

A method of marking a thermoplastic article can comprise: combining a thermoplastic with a light-marking additive to form a composition, forming the composition into an article having a maximum optical absorption wavelength; and illuminating, at a marking wavelength, at least a portion of the article with a device having a power of less than or equal to about 200 mW, to form a light-mark. The light-mark can have a size, as measured along a major axis, of greater than or equal to about 10 micrometers. The light-mark can also have a mark absorption wavelength that is greater than or equal to about ±100 nm of the maximum optical absorption wavelength, and can have a spectral absorption curve.

OPTICAL ARTICLE HAVING ANTI-THEFT FEATURE AND A SYSTEM AND METHOD FOR INHIBITING THEFT OF SAME

A system for altering a functionality of an optical article from a pre-activated state to an activated state, comprising an optical article comprising an optical data layer for storing data, an external radiation source for generating an external stimulus adapted to interact with the optical article, such interaction causing a change in optical accessibility of optically stored data, a directing material, wherein said directing material is for directing the external stimulus to selective portions of the optical article, thereby altering the functionality of the optical article from a pre-activated state to an activated state; a convertible element capable of responding to the external stimulus to irreversibly alter the optical article from the pre-activated state of functionality to the activated state of functionality, wherein said convertible element comprises a color-shift dye, a magnetic material, a thermo-chromic material, a magneto-optical material, a light scattering material, a ...

AUTHENTICATABLE ARTICLES AND METHODS THEREFOR

An article comprising the compound of Formula (I): wherein R 1 is selected from the group consisting of an aliphatic functionality having 1 to 12 carbons, an aromatic functionality having 3 to 20 carbons, and a cycloaliphatic functionality having 3 to 20 carbons; R 2 and R 3 are independently selected from the group consisting of a hydroxyl group, a halogen atom, an aliphatic functionality having 1 to 12 carbons, an aromatic functionality having 3 to 20 carbons, and a cycloaliphatic functionality having 3 to 20 carbons; Y is either an oxygen atom or a sulfur atom; “n” has a value of 0 to 4; and “m” has a value of 0 to 3.

Colored optical discs and methods for making the same

Embodiments of optical discs and methods for making the same are disclosed. In one embodiment, the optical disc comprises: at least two plastic substrates comprising a bonding layer and a data layer disposed therebetween, wherein at least one of the substrates is a read side substrate comprising greater than or equal to about 0.01 wt % colorant, based upon the total weight of the read side substrate, and wherein the read side substrate has a UV Bonding Index of greater than or equal to about 0.5. One method for making the optical disc comprises: forming a first plastic substrate comprising greater than or equal to about 0.01 wt % colorant, based upon the total weight of the first plastic substrate, wherein a UV Bonding Index of the first plastic substrate is controlled to be greater than or equal to about 0.5, disposing a data layer between the first plastic substrate and a second substrate, bonding the first plastic substrate to the second plastic substrate with a bonding layer, and curing ...

COMPOSITION, MULTILAYER SHEETS MADE THEREFROM, AND METHODS FOR MAKING AND USING THE SAME

In an embodiment, a photovoltaic module, comprises a transparent superstrate; a backsheet, wherein the backsheet comprises a core layer comprising a core composition formed from a first polycarbonate comprising dimethyl bisphenol cyclohexane carbonate repeat units and bishpenol-A, wherein the first polycarbonate has the structure 2. The photovoltaic module of claim 1 , further comprising a first cap layer disposed on a surface of the core layer claim 1 , wherein the first cap layer comprises polycarbonate and a UV light absorbing stabilizer.3. The photovoltaic module of claim 2 , wherein the first cap layer comprises a resorcinol polyarylate carbonate copolymer.4. The photovoltaic module of claim 2 , further comprising a second cap layer claim 2 , wherein the core layer is disposed between the first cap layer and the second cap layer claim 2 , wherein the second cap layer comprises a member selected from the group consisting of polycarbonate claim 2 , ethylene vinyl acetate copolymer with a vinyl acetate content of 2 wt. % to 10 wt. % claim 2 , polyethylene claim 2 , polypropylene claim 2 , cyclic olefin copolymer claim 2 , and combinations comprising at least one of the foregoing.5. The photovoltaic module of claim 4 , wherein the second cap layer comprises a cyclic olefin polymer and wherein an adhesive layer is disposed between the second cap layer and the core layer.7. The multilayer sheet of claim 6 , wherein the second polycarbonate is present in an amount of 20 wt. % to 50 wt. % claim 6 , and the third polycarbonate is present in an amount of 10 wt. % to 50 wt. % claim 6 , based on a total weight of the composition of 100 wt. %.8. The multilayer sheet of claim 7 , wherein second polycarbonate is present in an amount of 40 wt. % to 50 wt. % claim 7 , and the third polycarbonate is present in an amount of 10 wt. % to 25 wt. % claim 7 , based on a total weight of the composition of 100 wt. %.9. The multilayer sheet of claim 6 , wherein the thermal shrinkage is ...

Reduced density article

A reduced density article of manufacture, and process for making same, made from a thermoplastic polycarbonate composition. The reduced density article of manufacture has (1) a certain density and (2) a certain micro structure containing from 1% to 20% by volume of voids wherein at least 80% of the voids are high aspect voids and less than 20% of the voids are spherical voids with a diameter of 10 to 100 microns. The polycarbonate thermoplastic composition comprises at least 50 mole % of a certain bisphenol A. The reduced density article of manufacture is made by a monofilament additive manufacturing technique.

Optical article having anti-theft feature and a system and method for inhibiting theft of same

An optical article for being transformed from a pre-activated state of functionality to an activated state of functionality is provided. The optical article includes a convertible element disposed in or proximate to the optical article and being responsive to an external stimulus. The convertible element for irreversibly altering the optical article from the pre-activated state of functionality to the activated state of functionality upon interaction with the external stimulus.

Authenticatable articles and methods therefor

An article comprising the compound of Formula (I): wherein R1 is selected from the group consisting of an aliphatic functionality having 1 to 12 carbons, an aromatic functionality having 3 to 20 carbons, and a cycloaliphatic functionality having 3 to 20 carbons; R2 and R3 are independently selected from the group consisting of a hydroxyl group, a halogen atom, an aliphatic functionality having 1 to 12 carbons, an aromatic functionality having 3 to 20 carbons, and a cycloaliphatic functionality having 3 to 20 carbons; Y is either an oxygen atom or a sulfur atom; n has a value of 0 to 4; and m has a value of 0 to 3.

PROCESSES FOR PREPARING POLYCARBONATES WITH ENHANCED OPTICAL PROPERTIES

Processes for preparing high purity polycarbonates having high light transmission, low yellowness, and color stability are disclosed herein. High purity starting ingredients are used to form a polycarbonate powder. The polycarbonate powder can be subsequently melt extruded at an optimum shear rate to minimize yellowness and the need to add colorant to overcome the yellowness. The lower amount of colorant increases the light transmission of the resulting polycarbonate resin. 1. A process for making a polycarbonate powder , comprising:combining a dihydric phenol reactant, a water immiscible solvent, water, a catalyst, a chelant, and a base to form a reaction mixture;reacting the reaction mixture by addition of a carbonate precursor and an endcapping agent to form a polycarbonate-containing solution; andpurifying the polycarbonate-containing solution using high purity water to obtain polycarbonate powder;wherein the dihydric phenol reactant has a purity of at least 99.7%;wherein the water immiscible solvent contains less than 10 ppm of calcium, less than 1 ppm of iron, less than 0.5% salt, and less than 0.1% degraded polymer;wherein the high purity water has a conductivity of less than 10 micro-siemens/cm;wherein the base contains less than 10 ppm of impurities; andwherein the carbonate precursor contains less than 100 ppm of free chlorine.2. The process of claim 1 , wherein the pH of the reaction mixture is maintained at a pH of from about 9.5 to about 10.0 during the reaction.3. The process of claim 1 , wherein the polycarbonate-containing solution is purified by a process comprising:discharging the polycarbonate-containing solution into a first purifying stage that removes brine;feeding the polycarbonate-containing solution from the first purifying stage into a second purifying stage that removes the catalyst by extraction with an acid; andfeeding the polycarbonate-containing solution from the second purifying stage into a third purifying stage that washes the ...

Optical article having anti-theft feature and a system and method for inhibiting theft of same

A system for altering a functionality of an optical article from a pre-activated state to an activated state, comprising an optical article comprising an optical data layer for storing data, an external radiation source for generating an external stimulus adapted to interact with the optical article, such interaction causing a change in optical accessibility of optically stored data, a directing material, wherein said directing material is for directing the external stimulus to selective portions of the optical article, thereby altering the functionality of the optical article from a pre-activated state to an activated state; a convertible element capable of responding to the external stimulus to irreversibly alter the optical article from the pre-activated state of functionality to the activated state of functionality, wherein said convertible element comprises a color-shift dye, a magnetic material, a thermo-chromic material, a magneto-optical material, a light scattering material, a ...

Crystalline polycarbonate powders for powder bed fusion in additive manufacturing

Provided are compositions comprising partially crystalline polycarbonate particulate having an average cross-sectional dimension of from about 1 μιη to about 200 μιτι, having from about 10% crystallinity to about 50% crystallinity, and having a weight-average molecular weight, per polystyrene standards, of from about 17,000 to about 40,000 Daltons. The composition exhibits a zero-shear viscosity of less than about 104 Pa s at the melting temperature of the partially crystalline polycarbonate. Related systems and methods for utilizing these compositions in additive manufacturing applications, including selective laser sintering (SLS) applications, are also disclosed. Also provided are additively-manufactured articles made with the disclosed compositions and according to the disclosed methods.

Composition, method of authenticating, methods of making authenticatable compositions, authenticatable articles made there from

A composition comprising compound of formula I, a process for preparing the composition comprising compound of formula I, methods of authentication for an article comprising compound of formula I or compound of formula II, authentication technology for polymer based articles comprising compound of formula I or formula II, methods of facilitating such authentication and method of making articles capable of authentication.

X-ray and/or metal detectable articles and method of making the same

An article and thermoplastic composition including polycarbonate, a polysiloxane-polycarbonate and an x-ray detectable or metal detectable agent having good magnetic permeability and/or electrical conductivity wherein the composition may be used in articles for food preparation. The thermoplastic compositions are useful in forming molds for manufacturing a food product, such as chocolate molds.

X-RAY AND/OR METAL DETECTABLE ARTICLES AND METHOD OF MAKING THE SAME

An article and thermoplastic composition including polycarbonate, a polysiloxane-polycarbonate and an x-ray detectable or metal detectable agent having good magnetic permeability and/or electrical conductivity wherein the composition may be used in articles for food preparation. The thermoplastic compositions are useful in forming molds for manufacturing a food product, such as chocolate molds.

POLYCARBONATE-POLYSILOXANE COPOLYMER COMPOSITIONS AND ARTICLES FORMED THEREFROM

A thermoplastic composition comprises a copolycarbonate comprising 25 to 100 mole percent of a first carbonate unit derived from a dihydroxy aromatic compound having the formula wherein Ra′ and Rb′ are C1-12 alkyl, T is a C5-16 cycloalkylene, a C5-16 cylcloalkylidene, a C1-5 alkylene, a C1-5 alkylidene, a C6-13 arylene, a C7-12 arylalkylene, C7-12 arylalkylidene, a C7-12 alkylarylene, or a C7-12 arylenealkyl, and r and s are each independently 1 to 4, and r and s are 1 to 4; and 0 to 75 mole percent of a second carbonate unit, wherein the first carbonate unit and second carbonate unit are not identical; a polysiloxane-polycarbonate copolymer comprising 0.15 to 30 weight percent of a polysiloxane block comprising siloxane units of the formula wherein E is on average of 4 to 60 units, and 70 to 99.85 weight percent of a third carbonate unit, wherein an article having a thickness of 3.2 mm and molded from the thermoplastic composition has a Dynatup total energy of greater than 50 Joules, as ...

AUTHENTICATABLE ARTICLES AND METHODS THEREFOR

An article comprising the compound of Formula (I): wherein R 1 is selected from the group consisting of an aliphatic functionality having 1 to 12 carbons, an aromatic functionality having 3 to 20 carbons, and a cycloaliphatic functionality having 3 to 20 carbons; R 2 and R 3 are independently selected from the group consisting of a hydroxyl group, a halogen atom, an aliphatic functionality having 1 to 12 carbons, an aromatic functionality having 3 to 20 carbons, and a cycloaliphatic functionality having 3 to 20 carbons; Y is either an oxygen atom or a sulfur atom; “n” has a value of 0 to 4; and “m” has a value of 0 to 3.

FLAME RETARDANT THERMOPLASTIC POLYMER COMPOSITION, METHOD OF MANUFACTURE, AND ARTICLES FORMED THEREFROM

A thermoplastic polymer composition comprises a cyanophenyl endcapped polycarbonate, a potassium diphenyl sulphon-3-sulphonate; and brominated polycarbonate. In some embodiments, when the thermoplastic polymer composition is in the form of a 3 mm thick extruded sheet, the sheet has a smoke density of less than 200 at an exposure period of 240 seconds in accordance with the smoke density test as set forth in ASTM E662-06, and has no burning drips on the sheet for a duration of 10 minutes in accordance with the flammability test as set forth in NF-P-92-505.

X-RAY AND/OR METAL DETECTABLE ARTICLES AND METHOD OF MAKING THE SAME

An article and thermoplastic composition including polycarbonate, a polysiloxane-polycarbonate and an x-ray detectable or metal detectable agent having good magnetic permeability and/or electrical conductivity wherein the composition may be used in articles for food preparation. The thermoplastic compositions are useful in forming molds for manufacturing a food product, such as chocolate molds.

REDUCED DENSITY ARTICLE

A reduced density article of manufacture, and process for making same, made from a thermoplastic polycarbonate composition. The reduced density article of manufacture has (1) a certain density and (2) a certain micro structure containing from 1% to 20% by volume of voids wherein at least 80% of the voids are high aspect voids and less than 20% of the voids are spherical voids with a diameter of 10 to 100 microns. The polycarbonate thermoplastic composition comprises at least 50 mole % of a certain bisphenol A. The reduced density article of manufacture is made by a monofilament additive manufacturing technique. 1. A reduced density article of manufacture comprising a thermoplastic polycarbonate composition , the reduced density article of manufacture having (1) a density as measured by ASTM D792-00 of 80% to 99% by weight of a similar solid standard injection molded article having no voids and (2) a micro structure measured by optical microscopy containing from 1% to 20% by volume of voids wherein at least 80% of the voids are high aspect voids and less than 20% of the voids are spherical voids with a diameter of 10 to 100 microns; wherein the polycarbonate thermoplastic composition comprises at least 50 mole % bisphenol A having a weight-average molecular weight (Mw) of 10 ,000 to 50 ,000 , a glass transition temperature (Tg) from 130 to 180 degrees C. , a phenolic OH end group content of less than 50 ppm , a halide group content below 100 ppm , and a diaryl carbonate content below 1% by weight; and wherein the reduced density article of manufacture is made by a monofilament additive manufacturing technique.2. The reduced density article of manufacture of wherein the reduced density article of manufacture further comprises at least 50 ppm of a triaryl phosphate having a weight average molecular weight (Mw) of at least 300.3. The reduced density article of manufacture of wherein the reduced density article of manufacture further comprises at least 100 ppm of a ...

Authenticatable media and method of authenticating

One method for playing a disk, comprises illuminating a first portion of the optical article with a first laser to obtain a first optical signal, wherein the first laser has a first wavelength, illuminating a second portion with a second laser to obtain a second optical signal, wherein the second laser has a second wavelength that is different from the first wavelength, and determining if the optical article is authentic by comparing the first optical signal and the second optical signal.

Method for making highly colored DVDs

Embodiments of highly colored optical discs and methods for making the same are disclosed. For examples, specification discloses a DVD composition that comprises a bonding layer and a data layer disposed there between, wherein at least one of the substrates is a read side substrate comprising a highly colored polycarbonate comprising an optical quality polycarbonate resin and a colorant formulation in the range of 0.1 to 0.4 wt % of the highly colored polycarbonate.

Composition, method of authenticating, methods of making authenticatable compositions, authenticatable articles made there from

A composition comprising compound of formula I, a process for preparing the composition comprising compound of formula I, methods of authentication for an article comprising compound of formula I or compound of formula II, authentication technology for polymer based articles comprising compound of formula I or formula II, methods of facilitating such authentication and method of making articles capable of authentication.

Processes for preparing polycarbonates with enhanced optical properties

Processes for preparing high purity polycarbonates having high light transmission, low yellowness, and color stability are disclosed herein. High purity starting ingredients are used to form a polycarbonate powder. The polycarbonate powder can be subsequently melt extruded at an optimum shear rate to minimize yellowness and the need to add colorant to overcome the yellowness. The lower amount of colorant increases the light transmission of the resulting polycarbonate resin.

HIGH REFLECTANCE POLYCARBONATE

In an embodiment, a polycarbonate composition comprises: polycarbonate; 7 wt % to 20 wt % titanium dioxide, based upon a total weight of the polycarbonate composition; an optional flame retardant; and an optional UV stabilizer. A plaque formed from the polycarbonate composition has a reflectance of greater than or equal to 95%, as determined by reflectance measurements using a Gretag Macbeth Coloreye spectrophotometer (D65 light source, 10 degree observer, UV included) made at a wavelength of 680 nm. In an embodiment, a polycarbonate composition comprises: a polycarbonate; 7 to 20 wt % titanium dioxide; a flame retardant; and an optional UV stabilizer; wherein the polycarbonate composition has a maximum reflectance of greater than or equal to 95%. The melt volume rate as determined at 300° C. using a 1.2 kilogram weight, in accordance with ASTM D1238-04 is from 5 to 30 grams per 10 minutes. 1. An Illumination device , comprising:an LED; polycarbonate;', '12.5 wt % to 15 wt % titanium dioxide, based upon a total weight of the polycarbonate composition; and', 'an optional UV stabilizer;, 'a reflector comprising a reflective surface, wherein the reflective surface comprises a composition comprising'}wherein a plaque consisting essentially of the polycarbonate, the titanium dioxide, and the optional UV stabilizer has a reflectance of greater than or equal to 96.5% as determined by reflectance measurements using a Gretag Macbeth Coloreye spectrophotometer (D65 light source, 10 degree observer, UV included) made at a wavelength of 680 nm; anda lens in physical contact with the reflector.2. The device of claim 1 , wherein the composition is free of a flame retardant.3. The device of claim 1 , wherein the maximum reflectance is greater than or equal to 97%.4. The device of claim 1 , wherein the composition has a melt volume rate as determined at 300° C. using a 1.2-kilogram weight claim 1 , in accordance with ASTM D1238-04 of 5 to 50 grams per 10 minutes.5. The device of ...

BENZOXAZOLE AND BENZOTHIAZOLE COMPOUNDS AND METHODS THEREFOR

A compound of Formula (I): wherein R1 is selected from the group consisting of an aliphatic functionality having 2 to 12 carbons, an aromatic functionality having 3 to 20 carbons, and a cycloaliphatic functionality having 3 to 20 carbons; with the proviso that R1 is not —C6H5 or —NH—C10H7; R2 and R3 are independently selected from the group consisting of a hydroxyl group, a halogen atom, an aliphatic functionality having 2 to 12 carbons, an aromatic functionality having 3 to 20 carbons, and a cycloaliphatic functionality having 3 to 20 carbons; X is either an oxygen atom or a sulfur atom; “n” has a value of 0 to 4; and “m” has a value of 0 to 3.

Devices and methods capable of authenticating batteries

Battery-powered devices which are capable of authenticating batteries. In one embodiment, a device comprises: a battery, an excitation source, a photodetector, and an operating system. The device is capable of at least partially being powered by the battery. The excitation source is capable of producing radiation and disposed so that the radiation can contact a surface of the battery. The photodetector is capable of detecting radiation from the battery. The operating system is capable of determining whether or not the battery is an authentic battery for that device.

Method for making highly colored DVDs

Embodiments of highly colored optical discs and methods for making the same are disclosed. For examples, specification discloses a DVD composition that comprises a bonding layer and a data layer disposed there between, wherein at least one of the substrates is a read side substrate comprising a highly colored polycarbonate comprising an optical quality polycarbonate resin and a colorant formulation in the range of 0.1 to 0.4 wt % of the highly colored polycarbonate.

HIGH REFLECTANCE POLYCARBONATE

In an embodiment, a polycarbonate composition comprises: polycarbonate; 7 wt % to 20 wt % titanium dioxide, based upon a total weight of the polycarbonate composition; an optional flame retardant; and an optional UV stabilizer. A plaque formed from the polycarbonate composition has a reflectance of greater than or equal to 95%, as determined by reflectance measurements using a Gretag Macbeth Coloreye spectrophotometer (D65 light source, 10 degree observer, UV included) made at a wavelength of 680 nm. In an embodiment, a polycarbonate composition comprises: a polycarbonate; 7 to 20 wt % titanium dioxide; a flame retardant; and an optional UV stabilizer; wherein the polycarbonate composition has a maximum reflectance of greater than or equal to 95%. The melt volume rate as determined at 300° C. using a 1.2 kilogram weight, in accordance with ASTM D1238-04 is from 5 to 30 grams per 10 minutes.

Polyetherimide powders for additive manufacturing

Provided are amorphous and at least partially crystalline polyetherimide compositions having a comparatively narrow particle size distribution and are particularly suited for additive manufacturing processes. The compositions comprise a population of polyetherimide particulates are characterized as having a zero-shear viscosity sufficiently low so as to achieve a coalescence of at least 0.5, and preferably of about 1.0, as characterized by the Frenkel model at a temperature less than 450° C.

Composition, multilayer sheets made therefrom, and methods for making and using the same

In an embodiment, a photovoltaic module, comprises a transparent superstrate; a backsheet, wherein the backsheet comprises a core layer comprising a core composition formed from a first polycarbonate comprising dimethyl bisphenol cyclohexane carbonate repeat units and bishpenol-A, wherein the first polycarbonate has the structure wherein the dimethyl bisphenol cyclohexane carbonate repeat units are present in an amount of 10 wt. % to 50 wt. %, based on the total repeat units in the core composition; and a second polycarbonate selected from the group consisting of a bisphenol-A polycarbonate homopolymer, a polyphthalate carbonate copolymer, a polycarbonate copolymer comprising 2-phenyl-3,3-bis(4-hydroxyphenyl) phthalimidine carbonate and bisphenol-A carbonate repeat units, a polycarbonate copolymer comprising bisphenol-A carbonate and tetrabromobisphenol A carbonate repeat units, and combinations comprising at least one of the foregoing; and a photovoltaic cell between the superstrate and the backsheet.

High reflectance polycarbonate

In an embodiment, a reflector comprises a polycarbonate composition, the polycarbonate composition comprises: polycarbonate; 10 wt % to 20 wt % titanium dioxide, based upon a total weight of the polycarbonate composition; an optional flame retardant; and an optional UV stabilizer. A plaque formed from the polycarbonate composition has a reflectance of greater than or equal to 95%, as determined by reflectance measurements using a Gretag Macbeth Coloreye spectrophotometer (D65 light source, 10 degree observer, UV included) made at a wavelength of 680 nm. A molded article of the polycarbonate has transmission level greater than or equal to 90.0% at 2.5 mm thickness as measured by ASTM D1003-00 and a yellow index (YI) less than or equal to 1.5 as measured by ASTM D1925.

Polycarbonate-polysiloxane copolymer compositions and articles formed therefrom

A thermoplastic composition comprises a copolycarbonate comprising 25 to 100 mole percent of a first carbonate unit derived from a dihydroxy aromatic compound having the formula wherein Ra and Rb are C1-12 alkyl, T is a C5-16 cycloalkylene, a C5-16 cylcloalkylidene, a C1-5 alkylene, a C1-5 alkylidene, a C6-13 arylene, a C7-12 arylalkylene, C7-12 arylalkylidene, a C7-12 alkylarylene, or a C7-12 arylenealkyl, and r and s are each independently 1 to 4, and r and s are 1 to 4; and 0 to 75 mole percent of a second carbonate unit, wherein the first carbonate unit and second carbonate unit are not identical; a polysiloxane-polycarbonate copolymer comprising 0.15 to 30 weight percent of a polysiloxane block comprising siloxane units of the formula wherein E is on average of 4 to 60 units, and 70 to 99.85 weight percent of a third carbonate unit, wherein an article having a thickness of 3.2 mm and molded from the thermoplastic composition has a Dynatup total energy of greater than 50 Joules, as ...

Devices and methods capable of authenticating batteries

Disclosed herein are battery-powered devices capable of authenticating batteries. In one embodiment, a device comprises: a battery, an excitation source, a photodetector, and an operating system. The device is capable of at least partially being powered by the battery. The excitation source is capable of producing radiation and disposed so that the radiation can contact a surface of the battery. The photodetector is capable of detecting radiation from the battery. The operating system is capable of determining whether or not the battery is an authentic battery for that device.

Marked article and method of making the same

A storage medium can comprise a substrate, a reflective layer disposed on a side of the substrate, and data. The substrate can comprise a thermoplastic and a light-mark formed from at least a portion of light-marking additive mixed with the thermoplastic, wherein an optical property of the light-marking additive at an optical drive read wavelength can change due to being contacted with a mark wavelength. A method for using a storage medium can comprise directing a reading device to detect an inspection area of the storage medium, and wherein the inspection area on an authentic medium has a light-mark in a substrate of the storage medium that forms an optically induced signature. The optically induced signature can be converted to a digital identification signature and the digital identification signature can be verified for authenticity.

X-ray and/or metal detectable articles and method of making the same

An article and thermoplastic composition including polycarbonate, a polysiloxane-polycarbonate and an x-ray detectable or metal detectable agent having good magnetic permeability and/or electrical conductivity wherein the composition may be used in articles for food preparation. The thermoplastic compositions are useful in forming molds for manufacturing a food product, such as chocolate molds.

Colored optical discs and methods for making the same

Embodiments of optical discs and methods for making the same are disclosed. In one embodiment, the optical disc comprises: at least two plastic substrates comprising a bonding layer and a data layer disposed therebetween, wherein at least one of the substrates is a read side substrate comprising greater than or equal to about 0.01 wt % colorant, based upon the total weight of the read side substrate, and wherein the read side substrate has a UV Bonding Index of greater than or equal to about 0.5. One method for making the optical disc comprises: forming a first plastic substrate comprising greater than or equal to about 0.01 wt % colorant, based upon the total weight of the first plastic substrate, wherein a UV Bonding Index of the first plastic substrate is controlled to be greater than or equal to about 0.5, disposing a data layer between the first plastic substrate and a second substrate, bonding the first plastic substrate to the second plastic substrate with a bonding layer, and curing ...

HIGH REFLECTANCE POLYCARBONATE

In an embodiment, a reflector comprises a polycarbonate composition, the polycarbonate composition comprises: polycarbonate; 10 wt % to 20 wt % titanium dioxide, based upon a total weight of the polycarbonate composition; an optional flame retardant; and an optional UV stabilizer. A plaque formed from the polycarbonate composition has a reflectance of greater than or equal to 95%, as determined by reflectance measurements using a Gretag Macbeth Coloreye spectrophotometer (D65 light source, 10 degree observer, UV included) made at a wavelength of 680 nm. A molded article of the polycarbonate has transmission level greater than or equal to 90.0% at 2.5 mm thickness as measured by ASTM D1003-00 and a yellow index (YI) less than or equal to 1.5 as measured by ASTM D1925. 1. A reflector comprising a polycarbonate composition , wherein the polycarbonate composition comprises:polycarbonate;10 wt % to 20 wt % titanium dioxide, based upon a total weight of the polycarbonate composition;an optional flame retardant; andan optional UV stabilizer;wherein a plaque formed from the polycarbonate composition has a reflectance of greater than or equal to 95%, as determined by reflectance measurements using a Gretag Macbeth Coloreye spectrophotometer (D65 light source, 10 degree observer, UV included) made at a wavelength of 680 nm;wherein a molded article of the polycarbonate has transmission level greater than or equal to 90.0% at 2.5 mm thickness as measured by ASTM D1003-00 and a yellow index (YI) less than or equal to 1.5 as measured by ASTM D1925.2. The reflector of claim 1 , wherein the reflectance is greater than or equal to 96%.3. The reflector of claim 1 , comprising a melt volume rate as determined at 300° C. using a 1.2-kilogram weight claim 1 , in accordance with ASTM D1238-04 of 5 to 50 grams per 10 minutes.4. The reflector of claim 1 , wherein the titanium dioxide is present in an amount of 10 wt % to 15 wt %.5. The reflector of claim 1 , wherein the titanium dioxide is ...

Method of authenticating polymers, authenticatable polymers, methods of making authenticatable polymers and authenticatable articles, and articles made there from

Disclosed is a method of authenticating that a test polymer is an authenticatable polymer, wherein the authenticatable polymer has an authentication signal and comprises a substrate polymer and an optically variable tag, the optically variable tag having a fluorescence emission whose wavelength or intensity change over time, the method comprising subjecting the test polymer to a stimulus sufficient to cause fluorescence of the optically variable tag, determining a test signal from the fluorescence of the test polymer, and authenticating that the test polymer is an authenticatable polymer if the test signal is the same as the authentication signal of the authenticatable polymer.

Colored optical discs and methods for making the same

Embodiments of optical discs and methods for making the same are disclosed. In one embodiment, the optical disc comprises: at least two plastic substrates comprising a bonding layer and a data layer disposed therebetween, wherein at least one of the substrates is a read side substrate comprising greater than or equal to about 0.05 wt % colorant, based upon the total weight of the read side substrate, and wherein the read side substrate has a UV Bonding Index of greater than or equal to about 0.5. One method for making the optical disc comprises: forming a first plastic substrate comprising greater than or equal to about 0.05 wt % colorant, based upon the total weight of the first plastic substrate, wherein a UV Bonding Index of the first plastic substrate is controlled to be greater than or equal to about 0.5, disposing a data layer between the first plastic substrate and a second substrate, bonding the first plastic substrate to the second plastic substrate with a bonding layer, and curing ...

METHOD OF AUTHENTICATING TAGGED POLYMERS

In one embodiment, a tagged polymer composition, comprises: a base polymer composition comprising a forensic polymer composition and a dynamic response authentication marker. The forensic polymer composition comprises a marked polymer having a forensic authentication marker. The forensic authentication marker is present in an amount sufficient to be detected by a forensic analytical technique. The dynamic response authentication marker is present in an amount sufficient to be detected by a dynamic response analytical technique and wherein, when tested, the dynamic response authentication marker has a change in mode.

Method of authenticating polymers, authenticatable polymers, methods of making authenticatable polymers and authenticatable articles, and articles made there from

Disclosed is a method of authenticating that a test polymer is an authenticatable polymer, wherein the authenticatable polymer has an authentication signal and comprises a substrate polymer and an optically variable tag, the optically variable tag having a fluorescence emission whose wavelength and/or intensity change over time, the method comprising subjecting the test polymer to a stimulus sufficient to cause fluorescence of the optically variable tag, determining a test signal from the fluorescence of the test polymer, and authenticating that the test polymer is an authenticatable polymer if the test signal is the same as the authentication signal of the authenticatable polymer.

Composition, method of authenticating, methods of making authenticatable compositions, authenticatable articles made there from

A composition comprising compound of formula I, a process for preparing the composition comprising compound of formula I, methods of authentication for an article comprising compound of formula I or compound of formula II, authentication technology for polymer based articles comprising compound of formula I or formula II, methods of facilitating such authentication and method of making articles capable of authentication.

CRYSTALLINE POLYCARBONATE POWDERS FOR POWDER BED FUSION IN ADDITIVE MANUFACTURING

Provided are compositions comprising partially crystalline polycarbonate particulate having an average cross-sectional dimension of from about 1 μιη to about 200 μιτι, having from about 10% crystallinity to about 50% crystallinity, and having a weight-average molecular weight, per polystyrene standards, of from about 17,000 to about 40,000 Daltons. The composition exhibits a zero-shear viscosity of less than about 104 Pa s at the melting temperature of the partially crystalline polycarbonate. Related systems and methods for utilizing these compositions in additive manufacturing applications, including selective laser sintering (SLS) applications, are also disclosed. Also provided are additively-manufactured articles made with the disclosed compositions and according to the disclosed methods. 2. A composition , comprising:a. a population of particulates that comprise an at least partially crystalline polycarbonate,b. the population of particulates having an average cross-sectional dimension of from about 1 to about 200 μm;{'sup': '4', 'c. the composition having a zero-shear viscosity of less than about 10Pa·s at the melting temperature of the population particulates; and'}d. the at least partially crystalline polycarbonate having a weight-average molecular weight, per polystyrene standards, of from about 17,000 to about 40,000 Daltons.3. The composition of claim 1 , further comprising a flow promoter.4. A composition claim 1 , comprising: a population of particulates that comprise at least partially crystalline polycarbonate claim 1 , the population of particulates having an average cross-sectional dimension of from about 1 to about 200 μm; and a flow promoter in particulate form claim 1 , the composition having a zero-shear viscosity of less than about 10Pa·s at the melting temperature of the population particulates.5. The composition of claim 3 , wherein the flow promoter is present at from about 0.025 wt % to about 0.5 wt % as measured against the weight of the ...

CRYSTALLINE POLYCARBONATE POWDERS FOR POWDER BED FUSION IN ADDITIVE MANUFACTURING

Provided are compositions including a population of particulates that comprise an at least partially crystalline polycarbonate having an average cross-sectional dimension of from about 1 to about 200 μm, and have a weight-average molecular weight, per polystyrene standards, of from about 17,000 to about 40,000 Daltons. The composition exhibits a zero-shear viscosity of less than about 10Pa·s at the melting temperature of the partially crystalline polycarbonate. Related systems and methods for utilizing these compositions in additive manufacturing applications, including selective laser sintering (SLS) applications, are also disclosed. Also provided are additively-manufactured articles made with the disclosed compositions and according to the disclosed methods. 1. A composition , comprising:a. a population of particulates that comprise an at least partially crystalline polycarbonate,b. the population of particulates having an average cross-sectional dimension of from about 1 to about 200 μm;{'sup': '4', '#text': 'c. the composition having a zero-shear viscosity of less than about 10Pa·s at the melting temperature of the population particulates; and'}d. the at least partially crystalline polycarbonate having a weight-average molecular weight, per polystyrene standards, of from about 17,000 to about 40,000 Daltons.2. The composition of claim 1 , further comprising a flow promoter.3. The composition of claim 2 , wherein the flow promoter is present at from about 0.025 wt % to about 0.5 wt % as measured against the weight of the composition.4. The composition of claim 2 , wherein the flow promoter comprises silica claim 2 , alumina claim 2 , or any combination thereof.5. The composition of claim 1 , wherein the average cross-sectional dimension is from about 10 μm to about 150 μm.6. The composition of claim 1 , wherein the at least partially crystalline polycarbonate comprises from about 10% to about 50% crystallinity based on an observed enthalpy of fusion as measured ...

ENHANCED LAYER ADHESION IN ADDITIVE MANUFACTURING BY USE OF MULTIPLE HEATING STEPS

Provided are systems and methods for additive manufacturing, which systems and methods yield parts having improved interlayer adhesion. In the disclosed technology, additional heating steps are applied on the upper surface of the already printed workpiece so as to offset the dropping temperature of that surface during part fabrication. These heating steps elevate the temperature of the surface to a value that results in a molten interface with subsequently-applied build material, leading to improved interlayer adhesion. This technology is applicable to a variety of additive manufacturing processes, including but not limited to selective laser sintering, fused filament fabrication, and large format additive manufacturing approaches. 1. An additive manufacturing system , comprising a substrate having an upper surface;a build platform having an upper surface;the build platform being moveable relative to the substrate so as to alter a distance between the upper surface of the substrate and the upper surface of the build platform;a spreader configured to transfer a quantity of particulate from at least a first loading position on the upper surface of the substrate to a first pre-build position on the upper surface of the substrate and a first pre-build energy source configured to effect a temperature at the first pre-build position that is higher than a temperature at the first loading position,the spreader further being configured to transfer a quantity of particulate from the first pre-build position to the build platform;anda first build platform energy source configured to heat material disposed atop the build platform.2. The additive manufacturing system of claim 1 , wherein the first build platform energy source and the first pre-build energy source comprise a single laser.3. The additive manufacturing system of claim 1 , wherein the spreader is moveable to a second loading position and optionally moveable to a second pre-build position.4. The additive ...

Flame retardant thermoplastic polymer composition, method of manufacture, and articles formed therefrom

A thermoplastic polymer composition comprises a cyanophenyl endcapped polycarbonate, a potassium diphenyl sulphon-3-sulphonate; and brominated polycarbonate. In some embodiments, when the thermoplastic polymer composition is in the form of a 3 mm thick extruded sheet, the sheet has a smoke density of less than 200 at an exposure period of 240 seconds in accordance with the smoke density test as set forth in ASTM E662-06, and has no burning drips on the sheet for a duration of 10 minutes in accordance with the flammability test as set forth in NF-P-92-505.

Crystalline polycarbonate powders for powder bed fusion in additive manufacturing

Marked article and method of making the same

A method of marking a thermoplastic article can comprise: combining a thermoplastic with a light-marking additive to form a composition, forming the composition into an article having a maximum optical absorption wavelength; and illuminating, at a marking wavelength, at least a portion of the article with a device having a power of less than or equal to about 200 mW, to form a light-mark. The light-mark can have a size, as measured along a major axis, of greater than or equal to about 10 micrometers. The light-mark can also have a mark absorption wavelength that is greater than or equal to about ±100 nm of the maximum optical absorption wavelength, and can have a spectral absorption curve.

Optical article having anti-theft feature and a system and method for inhibiting theft of same

Crystalline polycarbonate powders for powder bed fusion in additive manufacturing

Provided are compositions comprising partially crystalline polycarbonate particulate having an average cross-sectional dimension of from about 1 μιη to about 200 μιτι, having from about 10% crystallinity to about 50% crystallinity, and having a weight-average molecular weight, per polystyrene standards, of from about 17,000 to about 40,000 Daltons. The composition exhibits a zero-shear viscosity of less than about 104 Pa s at the melting temperature of the partially crystalline polycarbonate. Related systems and methods for utilizing these compositions in additive manufacturing applications, including selective laser sintering (SLS) applications, are also disclosed. Also provided are additively-manufactured articles made with the disclosed compositions and according to the disclosed methods.

Chemical compositions for authenticatable polymers and articles, and authentication methods thereof

Disclosed are compositions comprising at least one [benzo[4,5]imidazo(heterocycle)] compound, said [benzo[4,5]imidazo(heterocycle)] compound selected from the group consisting of structures I and II,wherein RI and R2 are independently selected from the group consisting of a hydrogen atom, electron withdrawing group, organic group, divalent 1,2­cycloalkylidene group, or combinations thereof, 'q' is independently an integer from 1 - 4, L is a linking group, and 'r' is independently 0 or 1; said at least one [benzo[4,5]imidazo(heterocycle)] compound being present at a concentration sufficient to cause said composition to exhibit upon exposure to an excitation radiation having a wavelength of from about 330 nanometers to about 390 nanometers, a maximum fluorescence emission wavelength of greater than or equal to about 470 nanometers; and a Stokes shift of greater than or equal to about 80 nanometers; wherein the wavelengths are measured in bisphenol A polycarbonate matrix.

Reduced density article

A reduced density article of manufacture, and process for making same, made from a thermoplastic polycarbonate composition. The reduced density article of manufacture has (1) a certain density and (2) a certain micro structure containing from 1% to 20% by volume of voids wherein at least 80% of the voids are high aspect voids and less than 20% of the voids are spherical voids with a diameter of 10 to 100 microns. The polycarbonate thermoplastic composition comprises at least 50 mole % of a certain bisphenol A. The reduced density article of manufacture is made by a monofilament additive manufacturing technique.

Benzoxazole and benzothiazole compounds useful as authentication compounds in polymer articles

A compound of Formula (I): wherein R1 is selected from the group consisting of an aliphatic functionality having 2 to 12 carbons, an aromatic functionality having 3 to 20 carbons, and a cycloaliphatic functionality having 3 to 20 carbons; with the proviso that R1 is not -C6H5 or -NH-C10H7; R2 and R3 are independently selected from the group consisting of a hydroxyl group, a halogen atom, an aliphatic functionality having 2 to 12 carbons, an aromatic functionality having 3 to 20 carbons, and a cycloaliphatic functionality having 3 to 20 carbons; X is either an oxygen atom or a sulfur atom; 'n' has a value of 0 to 4; and 'm' has a value of 0 to 3.

X-ray and/or metal detectable articles and method of making the same

An article and thermoplastic composition including polycarbonate, a polysiloxane-polycarbonate and an x-ray detectable or metal detectable agent having good magnetic permeability and/or electrical conductivity wherein the composition may be used in articles for food preparation. The thermoplastic compositions are useful in forming molds for manufacturing a food product, such as chocolate molds.

Marked article and method of making the same

A storage medium can comprise a substrate, a reflective layer disposed on a side of the substrate, and data. The substrate can comprise a thermoplastic and a light-mark formed from at least a portion of light-marking additive mixed with the thermoplastic, wherein an optical property of the light-marking additive at an optical drive read wavelength can change due to being contacted with a mark wavelength. A method for using a storage medium can comprise directing a reading device to detect an inspection area of the storage medium, and wherein the inspection area on an authentic medium has a light-mark in a substrate of the storage medium that forms an optically induced signature. The optically induced signature can be converted to a digital identification signature and the digital identification signature can be verified for authenticity.

Authenticatable articles and methods therefor

Verfahren zur authentifizierung markierter polymere

Polyetherimide powders for additive manufacturing

Verfahren zur authentifizierung markierter polymere

Flurescence tag based method of authenticating polymers, authenticatable polymers, methods of making authenticatable polymers and authenticatable articles, and articles made there from

Disclosed is a method of authenticating that a test polymer is in authenticatable polymer, wherein the authenticatable polymer has an authentication signal and comprises a substrate polymer and an optically variable tag having a fluorescence emission whose wavelength or intensity change over time, preferably the wavelenght and intensity of the fluorescence emission changes over time, the method comprising subjecting the testpolymer to stimulus sufficient to cause fluorescence of the optically variabletag, determining a test signal from the fluorescence of the test polymer and authenticating that the test polymer is an authenticatable polymer if the test signal is the same as the authentication signal of the authenticatable polymer. The invention paricularly relates to a nondestructive authentication technology for use in data storage media made of polycarbonate such as compact disks (CDs) and digital versatile disk (DVDs).

Authenticatable media and method of authenticating

One method for playing a disk, comprises illuminating a first portion of the optical article with a first laser to obtain a first optical signal, wherein the first laser has a first wavelength, illuminating a second portion with a second laser to obtain a second optical signal, wherein the second laser has a second wavelength that is different from the first wavelength, and determining if the optical article is authentic by comparing the first optical signal and the second optical signal.

Marked article and method of making the same

A storage medium can comprise a substrate, a reflective layer disposed on a side of the substrate, and data. The substrate can comprise a thermoplastic and a light-mark formed from at least a portion of light-marking additive mixed with the thermoplastic, wherein an optical property of the light-marking additive at an optical drive read wavelength can change due to being contacted with a mark wavelength. A method for using a storage medium can comprise directing a reading device to detect an inspection area of the storage medium, and wherein the inspection area on an authentic medium has a light-mark in a substrate of the storage medium that forms an optically induced signature. The optically induced signature can be converted to a digital identification signature and the digital identification signature can be verified for authenticity.

X-ray and/or metal detectable articles and method of making the same

An article and thermoplastic composition including polycarbonate, a polysiloxane-polycarbonate and an x-ray detectable or metal detectable agent having good magnetic permeability and/or electrical conductivity wherein the composition may be used in articles for food preparation. The thermoplastic compositions are useful in forming molds for manufacturing a food product, such as chocolate molds.

Ｘ線および／または金属の検出可能物品並びに熱可塑性組成物

【課題】金型等に使用する場合、及びプロセス内において熱可塑性樹脂におけるＸ線及び／又は金属の検出可能性を改善する方法及びその方法により生産された物品の提供。【解決手段】ポリカーボネート０〜９５重量部、ポリシロキサン−ポリカーボネート５〜１００重量部、、及び良好な透磁性及び／又は導電性を有するＸ線検出可能又は金属検出可能な原子番号が２２以上のＸ線散乱原子を含むＸ線造影剤を、ポリシロキサン−ポリカーボネート及びポリカーボネートを合わせた１００重量部を基準として、０．０１〜１０重量部含有する熱可塑性組成物を含む物品。【選択図】なし

X-ray and/or metal detectable articles and method of making the same

An article and thermoplastic composition including polycarbonate, a polysiloxane-polycarbonate and an x-ray detectable or metal detectable agent having good magnetic permeability and/or electrical conductivity wherein the composition may be used in articles for food preparation. The thermoplastic compositions are useful in forming molds for manufacturing a food product, such as chocolate molds.

Authenticatable media and method of authenticating

One method for playing a disk, comprises illuminating a first portion of the optical article with a first laser to obtain a first optical signal, wherein the first laser has a first wavelength, illuminating a second portion with a second laser to obtain a second optical signal, wherein the second laser has a second wavelength that is different from the first wavelength, and determining if the optical article is authentic by comparing the first optical signal and the second optical signal.

Colored optical discs and methods for making the same

Embodiments of optical discs and methods for making the same are disclosed. In one embodiment, the optical disc comprises: at least two plastic substrates (1) comprising a bonding layer and a data layer disposed therebetween, wherein at least one of the substrates (1) is a read side substrate comprising greater than or equal to about 0.01 wt% colorant, based upon the total weight of the read side substrate, and wherein the read side substrate has a UV Bonding Index of greater than or equal to about 0.5. One method for making the optical disc comprises: forming a first plastic substrate comprising greater than or equal to about 0.01 wt% colorant, based upon the total weight of the first plastic substrate, wherein a UV Bonding Index of the first plastic substrate is controlled to be greater than or equal to about 0.5, disposing a data layer between the first plastic substrate and a second substrate, bonding the first plastic substrate to the second plastic substrate with a bonding layer, and curing the bonding layer.

Colored optical discs and methods for making the same

Method for making highly colored DVDs

Colored optical discs and methods for making the same

METHOD FOR MAKING HIGHLY COLORED DVDs

Embodiments of highly colored optical discs and methods for making the same are disclosed. For examples, specification discloses a DVD composition that comprises a bonding layer and a data layer disposed there between, wherein at least one of the substrates is a read side substrate comprising a highly colored polycarbonate comprising an optical quality polycarbonate resin and a colorant formulation in the range of 0.l to 0.4 wt % of the highly colored polycarbonate. The range of metal impwities from the colorant formulation is specified.

METHOD FOR MAKING HIGHLY COLORED DVDs

Embodiments of highly colored optical discs and methods for making the same are disclosed. For examples, specification discloses a DVD composition that comprises a bonding layer and a data layer disposed there between, wherein at least one of the substrates is a read side substrate comprising a highly colored polycarbonate comprising an optical quality polycarbonate resin and a colorant formulation in the range of 0.l to 0.4 wt % of the highly colored polycarbonate. The range of metal impwities from the colorant formulation is specified.