Printing inks for offset and/or high printing containing NIR absorbers and NIR absorbers soluble in offset and/or high printing inks

US7901494B2 · kind B2 · utility

Assignees

• BASF SE
• Flint Group Germany GmbH · DE

Inventors

• Gerhard Wagenblast · Wachenheim, DE
• Helmut Reichelt · Neustadt, DE
• Michael Büschel · Worms, DE
• Sylke Haremza · Neckargemünd, DE
• Peter Erk · Bischofswerda, DE
• Erich Frank · Biberach an der Riß, DE

Key dates

• Filing date: Mar 2, 2005
• Grant date: Mar 8, 2011
• Expiry date: Aug 14, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D11/037
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Printing inks for offset and/or letterpress printing which comprise NIR absorbers, and solubility of the NIR absorber in the printing ink is at least 0.1% by weight. NIR absorbers consisting of cyanine cation with an anion which has long-chain alkyl or aralkyl groups. Use of such printing inks for printing processes in which the curing of the printing ink is promoted by using IR lasers. NIR absorbers comprising a cyanine cation with an anion which has long-chain alkyl or aralkyl groups.