Described herein are printing ink compositions suitable for printing of microwavable flexible packaging. The printed black ink exhibits low microwave energy absorption, thus minimizing the risk of charring, arcing, ignition, distortion or burning during microwave heating processes. Nitrocellulose resin, a solvent, a polyurethane resin, and a carbon black pigment having at least one of an imaginary permittivity of ≤3, preferably ≤2, and a surface oxygen content of 1 wt % to 3 wt %, preferably 1.5 wt % to 2.5 wt % are among the components of the printing ink compositions. Also described is packaging suitable for exposure to microwave energy upon which the inks have been printed.

Described herein are printing ink compositions suitable for printing of microwavable flexible packaging. The printed black ink exhibits low microwave energy absorption, thus minimizing the risk of charring, arcing, ignition, distortion or burning during microwave heating processes. Nitrocellulose resin, a solvent, a polyurethane resin, and a carbon black pigment having at least one of an imaginary permittivity of ≤3, preferably ≤2, and a surface oxygen content of 1 wt % to 3 wt %, preferably 1.5 wt % to 2.5 wt % are among the components of the printing ink compositions. Also described is packaging suitable for exposure to microwave energy upon which the inks have been printed.

A composite pigment includes first and second cholesteric liquid crystal pigments. The first cholesteric liquid crystal pigment has a center wavelength of a selective reflection band within a wavelength range of 400 nm or more and 800 nm or less and a selective reflection bandwidth of 150 nm or less. The second cholesteric liquid crystal pigment has a selective reflection bandwidth of 200 nm or more within a wavelength range of 400 nm or more and 800 nm or less. The selective reflection band of the first cholesteric liquid crystal pigment and a selective reflection band of the second cholesteric liquid crystal pigment at least partially overlap with each other. A containing amount of the first cholesteric liquid crystal pigment relative to a total amount of the first and second cholesteric liquid crystal pigments is more than 0% by weight and 30% by weight or less.

A composite pigment includes first and second cholesteric liquid crystal pigments. The first cholesteric liquid crystal pigment has a center wavelength of a selective reflection band within a wavelength range of 400 nm or more and 800 nm or less and a selective reflection bandwidth of 150 nm or less. The second cholesteric liquid crystal pigment has a selective reflection bandwidth of 200 nm or more within a wavelength range of 400 nm or more and 800 nm or less. The selective reflection band of the first cholesteric liquid crystal pigment and a selective reflection band of the second cholesteric liquid crystal pigment at least partially overlap with each other. A containing amount of the first cholesteric liquid crystal pigment relative to a total amount of the first and second cholesteric liquid crystal pigments is more than 0% by weight and 30% by weight or less.

Provide herein is an ink that can be coated onto a substrate such as a glass slide. The use of at least two distinct wax treated silica powders with different porosities provides the multipurpose functionality of thermal and inkjet printing onto an ink coated substrate for purposed, for example, of labeling.

Provide herein is an ink that can be coated onto a substrate such as a glass slide. The use of at least two distinct wax treated silica powders with different porosities provides the multipurpose functionality of thermal and inkjet printing onto an ink coated substrate for purposed, for example, of labeling.

A press-through packaging material is disclosed including, in sequence, a substrate, an opaque underlayer laminated on at least a part of the surface of the substrate, and a printing layer that contains a colored metal pigment, and that is formed on at least a part of the surface of the opaque underlayer. The colored metal pigment includes a metal pigment, an amorphous silicon oxide film layer formed on the surface of the metal pigment, and metal particles supported on a part of or on the entire surface of the amorphous silicon oxide film layer, the opaque underlayer having a mass per unit area of 0.5 g/m.sup.2 or more and 3.0 g/m.sup.2 or less, and the printing layer having a mass per unit area of 1.0 g/m.sup.2 or more and 3.5 g/m.sup.2 or less.

The present application provides a polycarbonate-based coating resin composition which exhibits high adhesiveness. The above are achieved by a polycarbonate resin composition which contains (A) a polycarbonate resin that contains a constituent unit represented by general formula (1) and a terminal structure represented by general formula (2) and (B) a polyisocyanate compound, wherein 0.1% by mass or more of the polyisocyanate compound (B) is contained on the basis of the total mass of the polycarbonate resin (A) and the polyisocyanate compound (B). (In formula (1) and formula (2), R.sub.1 to R.sub.3, X, m and n are as defined in the description.)

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Additive manufacturing processes, such as powder bed fusion of thermoplastic particulates, may be employed to form printed objects in a range of shapes. Formation of printed objects having various colors may sometimes be desirable. Thermoplastic particulates incorporating a color-changing material capable of forming different colors under specified activation conditions may impart different colors to a printed object. Such particulate compositions may comprise a plurality of thermoplastic particulates comprising a thermoplastic polymer and a color-changing material associated with the thermoplastic particulates, wherein the color-changing material is photochromic and thermochromic. Conjugated diynes, such as 10,12-pentacosadiynoic acid or a derivative thereof, may be particularly suitable color-changing materials having photochromic and thermochromic properties for forming a range of colors upon a printed object. Nanoparticles, particularly silica nanoparticles, associated with an outer surface of the thermoplastic particulates may enhance the brightness of the color obtained under various activation conditions and afford coloration permanence.

Additive manufacturing processes, such as powder bed fusion of thermoplastic particulates, may be employed to form printed objects in a range of shapes. Formation of printed objects having various colors may sometimes be desirable. Thermoplastic particulates incorporating a color-changing material capable of forming different colors under specified activation conditions may impart different colors to a printed object. Such particulate compositions may comprise a plurality of thermoplastic particulates comprising a thermoplastic polymer and a color-changing material associated with the thermoplastic particulates, wherein the color-changing material is photochromic and thermochromic. Conjugated diynes, such as 10,12-pentacosadiynoic acid or a derivative thereof, may be particularly suitable color-changing materials having photochromic and thermochromic properties for forming a range of colors upon a printed object. Nanoparticles, particularly silica nanoparticles, associated with an outer surface of the thermoplastic particulates may enhance the brightness of the color obtained under various activation conditions and afford coloration permanence.