Patent ID: 8318844
Filing Date: 2012-11-27
Classification: C08G,C08K

Abstract:
1. An oil-dispersible composite of metallic nanoparticles, the composite having a particle size of about 5 to 100 nm and comprising metallic nanoparticles (or metal particles of a nano size) and polyurethane (PU); wherein the polyurethane (PU) chelates the metallic nanoparticles and serves as carriers for the metallic nanoparticles so that the metallic nanoparticles are uniformly dispersed; the metal is Au, Ag, Cu or Fe; and the polyurethane (PU) has a poly(oxyalkylene) segment and a hydroxyl group, capable of chelating the metal and has a molecular weight ranging from 2,000 to 200,000 g/mol.