INK FORMULATION

摘要

The present invention relates to an ink formulation comprising two-dimensional inorganic layered particles. The ink formulations of the present invention are for inkjet printing. The present invention also relates to a process for the preparation of these ink formulations, to the use of these ink formulations for the production of printed films and tracks comprising the inorganic material, to the films or tracks produced by the inkjet printing these ink formulations, and to devices that comprise these films or tracks.

主权项

1. An ink formulation suitable for inkjet printing, said formulation comprising a plurality of nanosheets dispersed in an aqueous vehicle;
wherein greater than 50% of the nanosheets comprise less than ten layers of an inorganic layered material and the aqueous vehicle comprises: (i) at least one water soluble polycyclic aromatic compound, (e.g. a salt thereof) or a salt thereof; wherein the or each polycyclic aromatic compound independently has a ring system which comprises from 2 to 10 fused aromatic benzene rings, the ring system being substituted with from 1 to 6 independently selected hydrophillic groups, each hydrophilic group consisting of less than 20 atoms; (ii) at least one viscosity modifier; and (iii) at least one surface tension modifier.