Abstract: The present invention is directed to a shear-thinning gel composition for producing a dry, water-stable and electronically conductive ink, comprising (a) dispersed electrically conductive graphite flake particles and (b) at least one further type of electronically conductive particles selected from carbon black and conductive pyrolyzed plant carbon components in a specific ratio of (a) to (b) as well as (c) a dissolved binder based on or consisting of shellac dissolved in a suitable solvent, where-in the ratio of the total of the electrically conductive particles (a)+(b) and the dissolved binder (c) and the weight proportion of the electrically conductive particles in the composition are specified.

Abstract: A fibrous substrate material for producing a porous coating base paper or prepreg comprises a planar impregnatable structure made of cellulose fibers, which contains at least one pigment species and optionally contains further additives conventional for paper. The cellulose fibers contain a proportion of 1 to 20 wt.-% of nanofibrillated cellulose (NFC). A method for producing the fibrous substrate material comprises the steps of: providing an aqueous suspension containing a cellulose containing material and an admixture of said pigment species and, optionally, further additives conventional for paper, sheet forming, drying. The cellulose containing material contains a proportion of 1 to 20 wt.-% of NFC with a specific surface (SSA) of at least 125 m2/g.

Abstract: A fibrous substrate material for producing a porous coating base paper or prepreg comprises a planar impregnatable structure made of cellulose fibers, which contains at least one pigment species and optionally contains further additives conventional for paper. The cellulose fibers contain a proportion of 1 to 20 wt.-% of nanofibrillated cellulose (NFC). A method for producing the fibrous substrate material comprises the steps of: providing an aqueous suspension containing a cellulose containing material and an admixture of said pigment species and, optionally, further additives conventional for paper, sheet forming, drying. The cellulose containing material contains a proportion of 1 to 20 wt.-% of NFC with a specific surface (SSA) of at least 125 m2/g.