Conductive ink composition and article of manufacture made therefrom

An ink composition, comprising:

• a thermoplastic polyurethane;
• particles comprising silver, the dry weight ratio of thermoplastic polyurethane to the particles ranges from about 1:30 to about 1:1;
• and
• at least one diluent liquid, the thermoplastic polyurethane and the at least one diluent liquid together being in the form of an emulsion,
• wherein the thermoplastic polyurethane has the property of exhibiting an elongation at break ranging from about 200% to about 1500% at 23° C. when in pure polymer form,
• wherein the thermoplastic polyurethane is a linear polyurethane with an activation temperature ranging from about 50° C. to about 100° C.

A method of forming an article of manufacture, the method comprising:

• applying an ink composition to a flexible substrate, the ink composition comprising:
• a thermoplastic polyurethane;
• particles comprising silver;
• and
• at least one diluent liquid, the thermoplastic polyurethane and the at least one diluent liquid together being in the form of an emulsion;
• wherein the thermoplastic polyurethane has the property of exhibiting an elongation at break ranging from about 200% to about 1500% at 23° C. when in pure polymer form;
• drying the ink composition to form an electrically conductive ink image;
• and
• optionally bending the substrate and the electrically conductive ink image.