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US 6,770,331 B1Granted
Colorant preparations
AssigneeBASF SE
InventorsManfred Mielke, Friedrich-Wilhelm Raulfs, Ulrike Schlösser, Rüdiger Sens, Karl Siemensmeyer, Dieter Freyberg, Mike Freche
Life of this patent
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Abstract
The invention relates to colorant preparations containing the following main constituents: A) at least one dispersed (A1) or dissolved (A2) colorant; B) if a colorant corresponding to (A1) is used, a dispersing agent; C) a low-molecular polytetrahydurofurane (C1), optionally mixed with one or more difficult-to-evaporate, water-soluble or water-miscible organic solvents (C2); and D) water.
Claims11
Ink-jet inks comprising
- A) at least one dispersed (A1) or dissolved (A2) colorant,
- B) a dispersant in the case of a colorant (A1),
- C) a low molecular weight polytetrahydrofuran (C1), if desired in mixture with one of more high-boiling water-soluble or -miscible organic solvents (C2), and
- D) water
- as essential constituents.
2 more elements
Dependencies are inferred from the claim text.