Laser Absorbing Compounds
AssigneeFerro Corporation
InventorsTerry J. Detrie, George E. Sakoske, Stephen Rozwood, Joseph E. Sarver
Life of this patent
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Abstract
Various laser marking compositions and related methods are described. The laser marking compositions include a molybdenum metal complex, a tungsten metal complex, or combinations thereof. Marks or other indicia formed on a substrate using the compositions and methods exhibit increased contrast and improved substrate bonding.
Claims21
1-90. (canceled)
A marking composition for forming a mark on a substrate upon being irradiated with a laser, the composition comprising:
- a vehicle;
- and
- a laser absorber comprising a metal complex selected from the group consisting of a molybdenum metal complex, a tungsten metal complex, and combinations thereof.
A method of forming a mark on a substrate, the method comprising:
- applying a marking composition to a substrate, the marking composition including:
- a vehicle;
- and
- a laser absorber comprising a metal complex selected from the group consisting of a molybdenum metal complex, a tungsten metal complex, and combinations thereof;
- and
- exposing the marking composition to a laser such that at least a portion of the marking composition increases in temperature, adheres to the substrate, and forms a mark on the substrate that has a luminance, color, and/or degree of opacity that contrasts from the substrate.
A substrate having a mark that is formed by lasing a marking composition disposed on the substrate, wherein the marking composition comprises:
- a vehicle;
- and
- a laser absorber comprising a metal complex selected from the group consisting of a molybdenum metal complex, a tungsten metal complex, and combinations thereof.
Dependencies are inferred from the claim text.