Process for sintering nanoparticles at low temperatures for patterns on glass, paper, or plastic substrates.


A process is disclosed for low temp. sintering of a pattern on a substrate. The substrate is precoated with a film of said nanoparticles and subsequently treated with said at least one sintering agent. The nanoparticles and at least one sintering agent are pre-formulated in an aq. dispersion, said dispersion being applied onto the substrate and allowed to dry at 5-150°. Nanoparticles comprising at least one metal silver, copper, gold, indium, tin, iron, cobalt, platinum, titanium, titanium oxide, silicon, silicon oxide or any oxide or alloy thereof. Said sintering agent contains chloride, e.g., poly(diallyldimethylammonium chloride) (PDAC). Said polymer is selected amongst polyimides and polypyrroles. A dispersant is selected from polycarboxylic acid esters, unsatd. polyamides, polycarboxylic acids, alkylamine salts of polycarboxylic acids, polyacrylate dispersants, polyethyleneimine dispersants and polyurethane dispersants. Said substrate is selected from glass, polymeric films, plain paper, porous paper, nonporous paper, coated paper, flexible paper, copier paper, photo paper, glossy photopaper, semi-glossy photopaper, heavy wt. matte paper, billboard paper, vinyl paper, high gloss polymeric films, transparent conductive materials, and plastics: polyethylene terephthalate PET, polyacrylates (PA), polyethylene naphthalate (PEN), polyethersulfone (PES), polyethylene (PE), polyimide (PI), polypropylene (PP) and polycarbonate (PC). [on SciFinder(R)]


CAPLUS AN 2010:1226806(Patent)