| 摘要 |
PROBLEM TO BE SOLVED: To provide a new method for forgery prevention technology.SOLUTION: A resin composition is provided, which comprises a resin and inorganic fine particles 1 with noble metal fine particles 3 supported on the surfaces thereof. By compounding organic molecules having two or more atomic groups that can be bonded to the noble metal fine particles, the dispersion state of the inorganic fine particles in the resin is controlled. By controlling a dispersion or uneven distribution state of the inorganic fine particles 1 introduced as a colorant (pigment) into the resin, the resin can be characterized. By observing an enlarged image of the composition with an electron microscope or the like, authenticity can be determined.SELECTED DRAWING: Figure 1 |
