Abstract: A thermoplastic composition comprises a polycarbonate, and an aromatic sulfonate compound of formula (Y)m—Ar—(Z—S(O)2—X)n wherein each X is independently a substituted or unsubstituted C1-C20 alkyl, substituted or unsubstituted C1-C20 arylalkyl, substituted or unsubstituted C6-C20 aryl, or substituted or unsubstituted C7-C40 alkylaryl; Z is —O—, or substituted or unsubstituted —(O—C1-20—)w—O—, wherein w is 1 to 20; Ar is a C6-C62 aromatic group; m is 0-3 and n is 3-6; and each Y is independently C1-C20 alkyl, substituted C1-C20 alkyl, C6-C20 aryl, C1-C8 alkyl-substituted C6-C20 aryl, halogen, nitro, C1-C20 alkoxycarbonyl, C1-C20 alkoxy, or C1-C20 acyl, and further wherein a molded article having a thickness of 3.2±0.

Abstract: Plastic articles, and in particular polycarbonate articles, provide an appealing aesthetic look in the form of a colored glow at locations defined by cuts and/or protrusions in the surface of the article as a result of incorporation of a photoluminescent material in the polycarbonate from which the article is formed. The cuts and/or protrusions define a graphic image, for example one or more letters (i.e., an initial or name), an abstract design, a drawing or a trademark or logo. Ambient light entering the plastic body results in luminescence from the photoluminescent material which is conducted as a result of internal reflectance within the plastic body to the edges of the cuts in the bodies surface.

Abstract: The packaged medical article can comprise the medical article and a protective layer capable of inhibiting exposure of the medical article to a color change activator prior to use of the medical article. The medical article comprises a plastic portion and an active color changing specie, wherein the color changing specie is capable of changing color after exposure to a color change activator. The method for producing a medical article can comprise: combining thermoplastic resin with a blocked color changing specie to form a resin mixture and manufacture processing the resin mixture to form a packaged medical article. This manufacturing processing comprises forming the resin mixture into the medical article and packaging the medical article to form a packaged medical article. The color changing specie will not affect the structural integrity of the medical article when it changes color.

Abstract: A thermoplastic composition comprising a polycarbonate, and an aromatic sulfonate compound of formula: Ar1—S(O)2—O—L—O—S(O)2—Ar1 wherein each Ar1 is each independently a substituted or unsubstituted C6-20 aryl group, and L is a branched, substituted or unsubstituted divalent aliphatic hydrocarbon, wherein a molded article having a thickness of 3.2±0.12 millimeters and consisting of the polycarbonate, the aromatic sulfonate compound, and an effective amount of each of an aliphatic diol, a mold release agent, and an antioxidant has, after exposure to a total gamma radiation dose of 83 kGy and when measured according to ASTM D1925-70, an increase in yellowness index (dYI) of less than or equal to 45, when compared to the unexposed molded article. Methods of making the thermoplastic composition, and articles prepared therefrom, are also disclosed.

Abstract: A polycarbonate composition comprising a polycarbonate-polysiloxane copolymer resin and a glass flake additive wherein the polycarbonate-polysiloxane copolymer resin has a silicone content in the range of from 3.5 weight % to 7 weight % based on the total weight of the polycarbonate composition and wherein the polycarbonate-polysiloxane copolymer has a haze of less than 10% and wherein the glass flake additive is present in the range of 0.025 weight % to 0.70 weight % based on the total weight of the polycarbonate composition.

Abstract: 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.

Abstract: 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.

Abstract: A three-dimensional structure of monodispersed particles, wherein the particles are formed from an emulsion polymerization comprising both hydrophobic and hydrophilic monomers.

Abstract: 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.

Abstract: A pearlescent pigment and a process for enhancing the magnetic properties of a pearlescent pigment. The pearlescent pigment has a layer with regions of ?-Fe2O3 and regions of ?-Fe2O3. The magnetic properties of a pearlescent pigment may be enhanced by the steps of: providing a platelet pigment with a layer of Fe2O3, with a magnetic susceptibility less than 0.1×10?5 m3/kg; reducing some or all of the Fe2O3 to Fe3O4; and oxidizing some or all of the Fe3O4 to ?-Fe2O3. The color difference (?E*) between the provided pigment and the resultant pigment is not more than about 5.

Abstract: An authenticatable article can comprise a polymer layer comprising a first taggant, and a second taggant disposed adjacent to the first taggant. The relative relationship of the first taggant and the second taggant can be such that at least one of the first taggant and the second taggant can cause an alteration in an emission from the other of the first taggant and the second taggant. One method of authenticating an article comprises illuminating an article and determining if an altered emission is within a selected emission range. The article comprises a polymer layer and a coating disposed on a side of the polymer layer. The polymer layer comprises a first taggant, and the coating causes a predetermined alteration in an emission from the taggant to form the altered emission.

Abstract: An orange pearlescent pigment comprising a substrate and a first layer containing FeOOH, and a second layer containing Fe2O3 located between the substrate and the first layer. The color of the pigment is such that a homogeneous coating of the pigment, measured over a white background, has a CIELAB hue angle, hab, from about 40 to about 60 degrees, and the chroma value is greater than 50. The pigment may be used in a cosmetic, coating, or ink composition.

Abstract: A pearlescent pigment, wherein the pigment is an inorganic material and the color of a homogeneous coating of the pigment, measured over a black background has a CIELAB hue angle, hab, from about 40 to about 320 degrees, wherein L* is from about 35 to about 80, and the chroma value is less than 5. A substrate is coated with iron oxide by oxidizing an iron salt to form a pigment. The pigment may be made by a process of coating iron oxide on a substrate by oxidizing an iron salt. During the coating of the iron oxide, the pH of the mixture is increased. The coating formed has a Fe(III)/Fe(II) ratio of greater than 2. The pigments may be used in a variety of applications including coating, ink, plastic, and cosmetic compositions.

Abstract: A thermoplastic composition comprises a polycarbonate, an ionizing radiation stabilizing additive, and a poly-substituted aromatic compound of formula: wherein X is an aryl group; Y is a non-hydrogen substituent group, a is 1 to 4, b is 0 to 4, a+b is less than or equal to 4, and c is 0 or 1; and wherein the amounts and identities of the polycarbonate, ionizing radiation stabilizing additive, and poly-substituted aromatic compound are selected such that a molded article having a thickness of 3.18 millimeters and comprising the thermoplastic composition has, after exposure to gamma radiation at 83 kGy and when measured according to ASTM D1925-70, an increase in yellowness index (dYI) of less than or equal to 50, when compared to the unexposed thermoplastic composition.

Abstract: A pearlescent pigment comprising a substrate and a first layer, wherein the first layer comprises iron oxide, wherein the iron has from about 1% to about 30% Fe(II) and from about 70% to about 99% Fe(III). A process for making these pearlescent pigment, comprise reducing a metal oxide substrate with a hydrogen source in the presence of a noble metal catalyst in a liquid medium. The pigments may be used in a variety of applications including cosmetics, plastics, automotive or architectural coatings.

Abstract: 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.

Abstract: Disclosed are methods for using color inconstancy pigments and/or dyes, such as rare earth doped color inconstancy pigments, in security applications including semi-overt and covert security application.

Abstract: 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.

Abstract: A light diffusing film for a back light display is described. The light diffusing film includes a unitary film consisting essentially of polycarbonate and a uniformly dispersed anti-static material in an amount sufficient to impart anti-static properties to the film. The anti-static material may comprise a fluorinated phosphonium sulfonate. The film may additionally include at least one textured surface for the low scattering of light. Alternatively, the film may additionally include a uniformly dispersed acrylic bulk scattering additive of particles having a mean particle size of from about 3 to about 10 microns and present in an amount from about 2 to about 7 percent by weight percent for the high scattering of light.

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.