Ceramic ink for inkjet digital printing
Ceramic ink for digital printing comprising a solid part provided with at least one ceramic component and a liquid part provided with at least one first vehicle, wherein said first vehicle is selected from the group comprising: esterified terephthalates, cyclohexane dicarboxylates, citrates, trimethylolpropane esters, fatty acid esters of aromatic alcohols.
1. A ceramic inkjet ink comprising a solid part provided with at least one ceramic component and a liquid part provided with at least one first vehicle and a second vehicle,
wherein said first vehicle comprises one or more esterified terephthalates, cyclohexane dicarboxylates, trimethylolpropane esters, and/or fatty acid esters of aromatic alcohols, and
wherein said second vehicle comprises one or more glycol ethers, glycol ether acetates and/or fatty acid esters, in which the first vehicle represents at least 10 wt % relative to the total weight of the ink.
2. The ink according to claim 1 , in which the esterified terephthalates have the general formula:
in which the cyclohexane dicarboxylates have the general formula:
in which the trimethylolpropane esters have the general formula:
in which the fatty acid esters of aromatic alcohols have the general formula:
and in which R, R′, R1, R2 and R3 comprise a linear or branched aliphatic group.
3. The ink according to claim 1 , in which said first vehicle has a boiling point above 250° C.
4. The ink according to claim 1 , in which the content of the second vehicle is less than 30 wt % relative to the total weight of the ink.
5. The ink according to claim 1 , comprising at least one additive, in which said additive comprises one or more dispersants, surfactants, viscosity modifiers, suspending agents, wetting agents, antifoaming agents, moistening agents, biocides, adhesion promoters, glue and/or colorants.
6. The ink according to claim 5 , in which the content of the additive is less than 5 wt % relative to the total weight of the ink.
7. The ink according to claim 1 , in which the first vehicle represents at least 30 wt % relative to the total weight of the ink.
8. The ink according to claim 1 , in which the first vehicle represents at least 50 wt % relative to the total weight of the ink.
9. The ink according to claim 1 , in which the first vehicle has a kinematic viscosity in a range of 1 cSt and 40 cSt at 40° C.
10. The ink according to claim 1 , in which the first vehicle has a kinematic viscosity in a range of 2 cSt and 30 cSt at 40° C.
11. The ink according to claim 1 , in which the first vehicle has a kinematic viscosity in a range of 3 cSt and 20 cSt at 40° C.