Colgate-Palmolive Company
Synthesis of zinc-lysine complex from zinc chloride

Abstract:

The disclosure provides an improved synthesis for a zinc-lysine complex having the formula [Zn(C.sub.6H.sub.14N.sub.2O.sub.2).sub.2Cl].sup.+Cl.sup.-, in which zinc chloride is reacted with lysine, in aqueous solution. The disclosure also provides oral care and personal care compositions comprising the complex prepared by the synthesis, and methods of using these complexes and compositions.