Colored fluorescent polymer emulsions for marker pens: graft copolymers and fluorescent dyes in aqueous phase

US5131916A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Herbert Eichenauer · Dormagen, DE
• Artur Haus · Leverkusen, DE

Key dates

• Filing date: Feb 22, 1991
• Grant date: Jul 21, 1992
• Expiry date: Feb 22, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/919
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Aqueous emulsions based on certain graft polymers are outstandingly suitable for the production of colored inks for so-called marker pens. They are distinguished, for example, by a high storage stability.