Patent ID: 8584591

Claim:
A multiple-part marking system that comprises at least one first part comprising at least one oxalate ester, at least one fluorescer, and at least one inorganic salt; and at least one second part comprising at least one peroxide and at least one catalyst chosen from sodium salicylate, lithium salicylate, 5-chlorolithium salicylate, triazoles, substituted triazoles, imidazoles, and substituted imidazoles; wherein light and heat are emitted when the two parts interact; wherein the at least one inorganic salt is chosen from sodium thiosulphate, potassium thiosulphate, cobalt acetate, copper acetate, lead acetate, cupric chloride, ferric chloride, calcium iodide, potassium iodide, and silver nitrate, and wherein the at least one inorganic salt is present in an amount ranging from 0.1 percent to 30 percent by weight based on the total weight of the two-part composition.