Aromatic condensation products

US5310855A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Klaus Walz
• Udo-Winfried Hendricks · Odenthal, DE
• Hans-Albert Ehlert · Leverkusen, DE
• Fritz Lesszinsky · Wittlich, DE

Key dates

• Filing date: Nov 13, 1992
• Grant date: May 10, 1994
• Expiry date: Nov 13, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C14C3/18
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The aromatic formaldehyde condensation products, which are substantially colorless and water-soluble and contain sulphonate and/or carboxylate groups, are obtainable by adding agents which have a reducing action during and/or after the condensation reaction, and are suitable for the treatment of textiles and leather.