Marking composition
AssigneesDeutsche Institute für Textil-und Faserforschung Denkendorf, Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
InventorsHeinz Greisiger, Thadeus Schauer, Marc Entenmann, Henry Lehman, Reinhold Schneider
Life of this patent
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Abstract
The invention relates to a marking composition, by means of which better protection of goods than hitherto available can be achieved independently of the coloring of the goods. The marking composition comprises an infrared-absorbing particulate component and carbon derivative, wherein the weight ratio of infrared-absorbing component to carbon derivative is in the range of approx. 10:1 to approx. 10,000:1.
Claims14
A marking composition comprising an infrared-absorbing particulate component and a carbon derivative, wherein the marking composition comprises a finely dispersed particulate mixture of the infrared-absorbing particulate component and the carbon derivative, wherein the characteristic value of the particle size d50 of the infrared-absorbing particulate component in the particulate mixture is 500 nm or less, wherein the weight ratio of the infrared-absorbing particulate component to the carbon derivative is in the range of approximately 100:1 to approximately 10,000:1, wherein the composition in the form of a fluid mass comprises a solid material portion of the infrared-absorbing particulate component of approximately 0.05 to approximately 1 weight-%, and wherein the marking composition exhibits a synergistic emission in the infrared range as a result of the combination of the infrared-absorbing particulate component and the carbon derivative.
Dependencies are inferred from the claim text.