Patent ID: 7297349

Claim:
A copper-containing composition comprising: divalent copper, polyphosphate residue(s), and a surfactant; wherein the polyphosphate residue is at least one member selected from the group consisting of a pyrophosphate residue, tripolyphosphate residue, tetrapolyphosphate residue, trimetaphosphate residue, and tetrametaphosphate residue; wherein the amount of the polyphosphate residues per one chemical equivalent of the divalent copper is higher than one chemical equivalent and not more than 4 chemical equivalents; wherein the surfactant is at least one member selected from the group consisting of polyoctyl polyaminoethyl glycine, alkyl polyaminoethyl glycine hydrochlorides, and 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolium betaine; or is at least one member selected from the group consisting of C 12 - 14 -alkenylsulfonate, polyoxyethylene styryl-phenyl ether, sodium naphthalene sulfonate formalin condensate, propylene glycol mono-oleate, alkyl polyaminoethyl glycine hydrochloride, and 2-alkyl-N-carboxymethyl-N-hydroxyethyl-imidazolium betaine.