C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 11/02 (2006.01) C09D 11/00 (2006.01)
Patent
CA 2169232
The aim of the invention is to develop an ink, which is difficult to repro- duce by a counterfeiter and having colour changing properties as a function of the wavelength of the light with which it is illuminated. This aim is achieved with the aid of an ink composition comprising at least one non-photochromic pigment or dye, a photochromic pigment or dye and a solvent, the photochromic pigment or dye changing absorption spectrum under the effect of a first light emitting in a wavelength belonging to the ultra- violet range, so that when it is subsequently illuminated by a second light only emitting in a wavelength belonging to the visible range, it has a colour different from that which it had, under the illumination of said second light, prior to illumination by said first light, said colour also differing from that of the non-photochromic pigment or dye when the latter is illuminated by said second light.
de Saint-Romain Pierre
Heraud Alain
Goudreau Gage Dubuc
Imaje S.a.
LandOfFree
Ink composition for marking and authenticating objects does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ink composition for marking and authenticating objects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ink composition for marking and authenticating objects will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1559305