Silver-containing aqueous formulation and its use to produce...

H - Electricity – 01 – B

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H01B 1/22 (2006.01) C09D 11/00 (2006.01) H05K 1/09 (2006.01)

Patent

CA 2667219

A disperse formulation which contains silver and water, and its use for production of electrically conductive and/or optically reflective coatings, are described. The formulation comprises at least a) 0.5 to 30 % by weight of silver metal particles with an effective maximum diameter of 150 nanometres, preferably at most 100 nanometres, and particularly preferably 40 to 80 nanometres, with a bimodal size distribution, b) 50 to 99.5% by weight of water and, possibly, solvent amounting to up to 30% by weight, c) 0.01 to 10% by weight of at least one, in particular polymer, dispersant aid, d) 0 to 5% by weight of film former, e) 5 to 5% by weight of additives, f) 0 to 5% by weight of conductive polymers, and has a maximum viscosity of 150 mPa >=s.

L'invention concerne une formulation dispersée contenant de l'eau et de l'argent et son utilisation pour la préparation de revêtements électriquement conducteurs et/ou optiquement réfléchissants. La formulation comprend au moins a) de 0,5 à 30 parties en poids de particules d'argent métallique dont le diamètre effectif est d'au plus 150 nm, de préférence d'au plus 100 nm et de façon particulièrement préférable de 40 à 80 nm avec une répartition granulométrique bimodale, b) de 50 à 99,5 parties en poids d'eau et éventuellement jusque 30 parties en poids de solvant, c) de 0,01 à 10 parties en poids d'au moins un adjuvant de dispersion, en particulier polymère, d) de 0 à 5 parties en poids d'un agent de formation de film, e) de 0 à 5 parties en poids d'additifs et f) de 0 à 5 parties en poids de polymères conducteurs, et elle présente une viscosité d'au plus 150 mPa.s.

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