Patent ID: 11866595
Assignee: TECGLASS SL
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 8:
9. A process for manufacturing the digital ceramik inks for glass according to claim 1, wherein the process comprises the following steps:
A. Preparing a glass frit paste (FP) by milling and grinding frit powder in the presence of a dispersant agent and a solvent to achieve a pigment volume particle size distribution Dv90 of less than 1.5 μm;
B. Preparing an inorganic pigment paste (PP) by milling and grinding pigment particles in the presence of a dispersant agent and a solvent to achieve a pigment volume particle size distribution Dv90 of less than 1 μm;
C. Mixing the frit paste of step (A) and pigment paste of step (B) in a high shear mixer or bead mixer;
D. Add a thinner constituting of mixture of solvents and additives to the concentrated ink of step (C) to achieve specific final formulations in the let-down medium, having a final solid content 30-60 wt. % on the total weight of the mixture and desired ink properties; and
E. Filtering the mixture of step (D) through a micrometer pore size filter, thereby obtaining a ceramic inkjet ink having a viscosity of 6-20 mPa·s at jetting temperature and jetting conditions.