Patent · US Expired

Use of azo pigment preparations for solvent-containing packaging intaglio and flexographic printing inks

US5352281A · kind A · utility

6Cited by

6References

15Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Joachim Weide · Kelkheim, DE
Hans Joachim Metz · Darmstadt, DE
Ruediger Jung · Kelkheim, DE
Rainer Winter · Oberursel, DE

Key dates

Filing date	Sep 1, 1993
Grant date	Oct 4, 1994
Priority date	—
Expiry date	Sep 1, 2013

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B67/0015
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Mono- and disazo pigments from the group of the acetoacetarylide, pyrazolone, .beta.-naphthol, 2-hydroxy-3-naphthanilide, 2-hydroxynaphthoic acid, benzimidazolone, diaryl yellow, diarylpyrazolone and disazobenzimidazolone pigments in whose preparation a nonionic surfactant which has a cloud point in aqueous solution was added at the latest immediately prior to the isolation, excluding pigments which have a bis(acetoacetylamino)benzene coupling component, are useful for pigmenting solvent-containing packaging intaglio and flexographic printing inks.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.