Patent ID: 7901596

Claim:
A metal composition comprising: a) about 65 to about 95 wt %, based on the total weight of the metal composition, of a metal powder selected from the group consisting of: Ag, Cu and alloys thereof; comprising a plurality of metal particles having an average longest dimension of about 5 nm to about 1500 nm; b) about 5 to about 35 wt % of a dispersant comprising one or more resins selected from the group of nonconducting polymers consisting of: combinations of acrylic latexes with solution-based acrylic (co)polymers, combinations of acrylic latexes with styrenic-acrylic (co)polymers, combinations of styrenic-acrylic latexes with solution-based acrylics (co)polymers, combinations of styrenic-acrylic latexes with solution-based styrenic-acrylic (co)polymers, combinations thereof, and copolymers of ethylene with one or more monomers selected from the group consisting of (meth)acrylate(s), vinyl acetate, carbon monoxide and (meth)acrylic acid; and c) a near infrared dye selected from the group consisting of indocyanines, phthalocyanines, and merocyanines.