Thermoreactive recording material having particular stability

US5292712A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Gunter Klug · Langenfeld, DE
• Heinrich Schrage · Krefeld, DE
• Pieter Ooms · Krefeld, DE
• Hans-Josef Buysch · Krefeld, DE

Key dates

• Filing date: Jul 20, 1992
• Grant date: Mar 8, 1994
• Expiry date: Jul 20, 2012

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41M5/3335
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

New thermoreactive recording materials contain at least one salt of a specially modified bisphenolcarboxylic acid and are distinguished by good stabilisation of the ink, even upon extended storage time, good light stabilities and excellent stabilities to water, plasticisers, fats and substances contained in text-marking pens.