Dyestuffs for printing inks

US5607502A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Karin Hassenruck · Mülheim an der Ruhr, DE
• Peter Wild · Odenthal, DE
• Martin Michna · Pulheim, DE

Key dates

• Filing date: Oct 19, 1995
• Grant date: Mar 4, 1997
• Expiry date: Oct 19, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D11/328
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process has been found for dyeing and printing pater, wood, plastic or metal, in which dyestuffs which, in the form of the free acid, correspond to the formula (I) ##STR1## wherein A denotes a phenol radical which is optionally substituted by alkyl or cycloalkyl and n represents 0 or 1, PA0 are employed.