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US 7,160,377 B2Granted
Aqueous, colloidal gas black suspension
AssigneeDegussa AG
InventorsHeinz Zoch, Werner Kalbitz, Stephan Lüdtke, Thomas Lüthge, Ralph McIntosh, Gerd Tauber
Life of this patent
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Abstract
Aqueous, colloidal gas black suspension containing: (a) a gas black, (b) an azo compound of the formula 1 (c) and water. The aqueous, colloidal gas black suspension is produced by dispersing the gas black and the azo compound of the formula 1 in water. It can be used in the production of inks, ink-jet inks, surface coatings and colored printing inks.
Claims19
An aqueous, colloidal gas black suspension, comprising:
- a gas black,
- an azo compound of the formula 1
- wherein R1 to R12 may be the same or different and consist of hydrogen, hydrophilic or hydrophobic groups, acceptor or donor substituents or parts of aliphatic, aromatic or heteroaromatic, acyclic, cyclic or polycyclic systems having acceptor, donor, hydrophilic or hydrophobic groups, and water.
Dependencies are inferred from the claim text.