Methods and compositions related to laser sensitive pigments for laser marking of plastics
AssigneeRona/EMI Industries, Inc.
InventorGuoyi Fu
Life of this patent
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Abstract
Platelet-shaped substrates that are coated with metal oxides and that are useful in the laser marking of plastics are disclosed. The platelet-shaped substrates may be employed as an additive to plastic for laser marking of a wide variety of plastics and for use with a number of different laser types.
Claims37
A laser sensitive pigment comprising at least one platelet-shaped substrate coated with a mixed metal oxide coating, wherein the mixed metal oxide coating comprises a host component and a marking component, wherein the host component comprises at least one of TiO2 or SnO2, and wherein the marking component comprises at least one of CuO, MoO3, WO3, V2O5, Ag2O, or PbO2, and wherein the mixed metal oxide coating comprises a host component/marking component weight ratio of 1/0.1-0.4.
A laser markable plastic object comprising a plastic resin having a laser sensitive pigment incorporated therein, wherein the laser sensitive pigment comprises at least one platelet-shaped substrate coated with a metal oxide coating comprising a marking component, wherein at least one marking component comprises MoO3, V2O5, Ag2O or PbO2.
A laser markable plastic object comprising a plastic resin having a laser sensitive pigment incorporated therein, wherein the laser sensitive pigment comprises at least one platelet-shaped mica substrate coated with a metal oxide coating comprising a marking component, wherein at least one marking component comprises CuO or WO3.
A laser sensitive pigment comprising at least one platelet-shaped substrate coated with a mixed metal oxide coating, wherein the mixed metal oxide coating comprises a host component and a marking component, wherein the host component comprises at least one of TiO2 or SnO2, and wherein the marking component comprises at least one of CuO, Ag2O, or PbO2, and at least one of MoO3, WO3, or V2O5, and wherein the mixed metal oxide coating comprises a host component/marking component weight ratio of 1/0.1-0.4.
A radiation sensitive pigment comprising at least one platelet-shaped substrate coated with a mixed metal oxide coating, wherein the mixed metal oxide coating comprises a host component and a marking component, wherein the host component comprises at least one of TiO2 or SnO2, and wherein the marking component comprises at least one of MoO3, WO3, V2O5, Ag2O, or PbO2, and wherein the mixed metal oxide coating comprises a host component/marking component weight ratio of 1/0.1-0.4.
A radiation sensitive pigment comprising at least one platelet-shaped substrate coated with a mixed metal oxide coating, wherein the mixed metal oxide coating comprises a host component and a marking component, wherein the host component comprises TiO2, and wherein the marking component comprises at least one of CuO, MoO3, WO3, V2O5, Ag2O, or PbO2, and wherein the mixed metal oxide coating comprises a host component/marking component weight ratio of 1/0.1-0.4.
Dependencies are inferred from the claim text.