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US 12,760,191 B2Granted
Inkjet ink compositions
OwnerDavid Majewski, Zheng Xue +3inventors
InventorsDavid Majewski, Zheng Xue, Linfang Zhu, John Folkers, Hanyan Meng
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Abstract
The present invention relates to inkjet ink compositions that take advantage of solvent mixtures containing an ester, a ketone, and optionally an alcohol, in order to provide ink compositions that have suitable qualities for inkjet printing. Preferred ink compositions include a C1-C3 alkyl ester of C1-C3 carboxylic acid, a C3-C7 ketone, and optionally a C2-C3 alkyl alcohol.
Claims20
An inkjet ink composition comprising:
- a) a binder resin;
- b) a colorant;
- and
- c) a solvent mixture containing:
- 1) about 10% to about 65% by weight of a C1-C3 alkyl ester of C1-C3 carboxylic acid selected from the group consisting of methyl acetate (MeOAc), ethyl acetate (EtOAc), isopropyl acetate (iPrOAc), and n-propyl acetate (nPrOAc);
- 2) about 5% to about 60% by weight of a C3-C7 ketone selected from the group consisting of acetone, methyl ethyl ketone (MEK), diethyl ketone (DEK), methyl isopropyl ketone (MIPK), methyl n-propyl ketone (MPK), methyl isobutyl ketone (MIBK methyl n-amyl ketone (MAK), methyl isoamyl ketone (MIAK), cyclopentanone, and cyclohexanone;
- and
- 3) optionally, about 1% to about 40% by weight of a C2-C3 alkyl alcohol selected from the group consisting of ethanol (EtOH), n-propanol (nPrOH) and isopropanol iPrOH),
- wherein the ink composition does not contain a humectant.
6 more elements
An inkjet ink composition comprising:
- a) a binder resin;
- b) a colorant;
- and
- c) a solvent mixture containing:
- 1) about 10% to about 65% by weight of EtOAc or iPrOAc;
- 2) about 5% to about 60% by weight of acetone, DEK, MIPK, or MPK, and
- 3) optionally, about 1% to about 40% by weight of EtOH, nPrOH, or iPrOH
- wherein the ink composition does not contain detectable MEK and wherein the ink composition does not contain a humectant.
5 more elements
Dependencies are inferred from the claim text.