Inkjet ink set for preparing conductive layers or patterns

Abstract

An inkjet ink set including a silver inkjet ink and a flushing liquid, characterized in that the flushing liquid comprises at least 25 wt % of 2-phenoxy ethanol based on the total weight of the flushing liquid.

1 - 15 . (canceled) 
     
     
         16 . An inkjet ink set comprising:
 a silver inkjet ink; and   a flushing liquid; wherein   the flushing liquid includes at least 25 wt % of 2-phenoxy ethanol based on a total weight of the flushing liquid.   
     
     
         17 . The inkjet ink set according to  claim 16 , wherein the flushing liquid further includes a solvent selected from the group consisting of propylene carbonate, n-butanol, and 2-pyrrolidone. 
     
     
         18 . The inkjet ink set according to  claim 16 , wherein the flushing liquid further includes between 5 and 20 wt % of n-butanol based on the total weight of the flushing liquid. 
     
     
         19 . The inkjet ink set according to  claim 16 , wherein a viscosity of the flushing liquid is lower than 15 mPa·s, measured at 25° C. at a shear rate of 1000 s −1 . 
     
     
         20 . The inkjet ink set according to  claim 16 , wherein the silver inkjet ink includes silver nanoparticles 
     
     
         21 . The inkjet ink set according to  claim 16 , wherein the silver inkjet ink includes a liquid carrier 
     
     
         22 . The inkjet ink set according to  claim 21 , wherein the liquid carrier is a high boiling solvent selected from the group consisting of 2-phenoxy ethanol, 4-methyl-1,3-dioxolan-2-one, n-butanol, 1,2 propanediol, 4-hydroxy-4-methyl pentan-2-one, pentan-3-one, 2-butoxy-ethanol, 1-methoxy-2-propanol and mixtures thereof. 
     
     
         23 . The inkjet ink set according to  claim 21 , wherein the liquid carrier includes at least 25 wt % of 2-phenoxyethanol and between 5 and 20 wt % of n-butanol. 
     
     
         24 . An inkjet printing method of preparing a conductive layer or pattern comprising the steps of:
 providing an inkjet ink set including the silver inkjet ink and the flushing liquid as defined in  claim 16 ;   cleaning a printhead with the flushing liquid;   jetting the silver inkjet ink on a support to form a silver layer or a pattern on the support; and   curing the silver layer or the pattern to form the conductive layer or the pattern.   
     
     
         25 . The inkjet printing method according to  claim 24 , wherein the step of curing is performed at a temperature below 150° C. 
     
     
         26 . The inkjet printing method according to  claim 24 , wherein the step of curing has a curing time of less than 30 minutes. 
     
     
         27 . The inkjet printing method according to  claim 24 , wherein the step of curing is performed with near infrared radiation.