CARBON BLACK IN EFFECT PIGMENTS
The present application is directed to a combination effect pigment comprising a platy substrate, an outer layer disposed above the platy substrate, and carbon black, wherein the carbon black is disposed above the substrate and is entrapped by the outer layer.
1 . A combination effect pigment comprising:
a platy substrate;
an outer layer disposed above the platy substrate; and
carbon black, wherein the carbon black is disposed above the substrate and is entrapped by the outer layer.
2 . The combination effect pigment of claim 1 , wherein the carbon black is present in a form of particles embedded within the outer layer.
3 . The combination effect pigment of claim 1 , wherein the carbon black is deposited via wet chemical deposition or chemical vapor deposition.
4 . The combination effect pigment of claim 1 , further comprising an intermediate layer disposed between the outer layer and the platy substrate.
5 . The combination effect pigment of claim 4 , wherein the carbon black is disposed as a layer between the intermediate layer and the outer layer, or disposed as a layer between the platy substrate and the intermediate layer.
6 . The combination effect pigment of claim 5 , wherein the carbon black is co-deposited with one or more of the intermediate layer or the outer layer.
7 . The combination effect pigment of claim 1 , further comprising:
a plurality of layers disposed between the platy substrate and the outer layer.
8 . The combination effect pigment of claim 7 , wherein the carbon black is present in a form of particles embedded within one or more of the plurality of layers.
9 . The combination effect pigment of claim 7 , wherein the carbon black is disposed as a layer between any adjacent pair of layers of the combination effect pigment.
10 . The combination effect pigment of claim 1 , wherein the carbon black is present in the effect pigment from about 10.00 wt. % to about 50.00 wt. % based on a total weight of the uncoated platy substrate.
11 . The combination effect pigment of claim 1 , further comprising:
a polyvalent cation selected from a group consisting of Al, Cr, Ti, Zn, Mg, Zr, Fe, Ce, and Sn, wherein the polyvalent cation is present in the combination effect pigment from about 0.01 wt. % to about 1.00 wt. % based on the total weight of the uncoated platy substrate.
12 . The combination effect pigment of claim 1 , wherein the outer layer is an optical layer comprising a metal oxide selected from a group consisting of TiO 2 , In 2 O 3 , ZrO 2 , Fe 2 O 3 , Fe 3 O 4 , Al 2 O 3 , Cr 2 O 3 ,CeO 2 , ZnO, SnO 2 , and combinations thereof.
13 . The combination effect pigment of claim 1 , wherein the platy substrate is selected from a group consisting of iron oxide, synthetic mica, natural mica, basic lead carbonate, flaky barium sulfate, SiO 2 , Al 2 O 3 , TiO 2 , glass, ZnO, ZrO 2 , SnO 2 , BiOCl, chromium oxide, BN, MgO flakes, Si 3 N 4 , graphite, aluminum, titanium, aluminum alloys, bronzes, iron, and perlite.
14 . The combination effect pigment of claim 1 , further comprising:
a plurality of layers disposed between the platy substrate and the outer layer, wherein the platy substrate, the carbon black, the plurality of intermediate layers, and the outer layer collectively define a layer structure of the effect pigment selected from a group consisting of:
platy substrate/SiO 2 /carbon black/SiO 2 ,
platy substrate/carbon black/SiO 2 ,
platy substrate/carbon black/TiO 2 ,
platy substrate/TiO 2 /carbon black/TiO 2 ,
platy substrate/carbon black/TiO 2 /SiO 2 ,
platy substrate/TiO 2 /carbon black/SiO 2 ,
platy substrate/SiO 2 /TiO 2 /carbon black/Fe 2 O 3 ,
platy substrate/TiO 2 /carbon black/SiO 2 /carbon black/TiO 2 ,
platy substrate/Fe 2 O 3 /SiO 2 /carbon black/TiO 2 /SiO 2 ,
platy substrate/SnO 2 /TiO 2 /carbon black/TiO 2 ,
platy substrate/TiO 2 /SiO 2 /carbon black/Fe 2 O 3 ,
platy substrate/TiO 2 /SiO 2 /carbon black/TiO 2 ,
platy substrate/TiO 2 /carbon black/SiO 2 /Fe 2 O 3 ,
platy substrate/TiO 2 /carbon black/SiO 2 /TiO 2 ,
platy substrate/Fe 2 O 3 /SiO 2 /carbon black/Fe 2 O 3 ,
platy substrate/Fe 2 O 3 /SiO 2 /carbon black/TiO 2 ,
platy substrate/Fe 2 O 3 /carbon black/SiO 2 /Fe 2 O 3 ,
platy substrate/Fe 2 O 3 /carbon black/SiO 2 /TiO 2 ,
platy substrate/TiO 2 /SiO 2 /carbon black/Cr 2 O 3 ,
platy substrate/carbon black/Fe 2 O 3 ,
platy substrate/TiO 2 /SiO 2 /TiO 2 /carbon black/TiO 2 , and
platy substrate/TiO 2 /SiO 2 /carbon black/TiO 2 .
15 . The combination effect pigment of claim 14 , wherein the carbon black is present as a single layer or is dispersed within one or more adjacent layers of the layer structure.
16 . The combination effect pigment of claim 1 , wherein the combination effect pigment is incorporated into a paint, ink-jet, coating, printing ink, plastic, cosmetic, glaze for ceramics, or glass, or cosmetic.
17 . A method of producing a combination effect pigment, the method comprising:
depositing carbon black on a platy substrate followed by forming an outer layer over the carbon black; or
co-depositing the carbon black and the outer layer on the platy substrate,
wherein the outer layer at least partially entraps the carbon black.
18 . The method of claim 17 , wherein the deposition or co-deposition of the carbon black on the platy substrate further comprises depositing or co-depositing a polyvalent cation.
19 . The method of claim 17 , further comprising:
depositing an intermediate layer prior to depositing the carbon black.
20 . The method of claim 17 , wherein depositing or co-depositing the carbon black comprises depositing the carbon black via wet chemical deposition or chemical vapor deposition.