| abstract |
(57) [Summary]nIt contains a solvent, a fluorescent colorant, a binder resin, and a plasticizer having a vapor pressure at 240 ° C. of about 15 mmHg or less. Suitable jet ink compositions are disclosed. Examples of suitable binder resins include acrylic resins, toluenesulfonamide resins and sulfonamide-formaldehyde resins. An example of a suitable plasticizer is o-butylbenzyl phthalate. The mark indicates brushing resistance when exposed to water above 66 ° C. (150 ° F.) for 5 minutes. Also disclosed is an improved method of object identification, the improvement comprising providing a brushing resistant identification mark using the jet ink composition of the present invention. A system for identifying an object with an identification mark having brushing resistance is also disclosed. |