Tanning assistant

US4888412A · kind A · utility

Assignee

• BASF SE

Inventors

• Klaus Ebel · Lampertheim, DE
• Wolfgang Reuther · Neckargemünd, DE
• Rolf Fikentscher · Ludwigshafen, DE
• Dietrich Lach
• Rolf Streicher · Worms, DE
• Ortwin Schaffer · Ludwigshafen, DE

Key dates

• Filing date: Jul 28, 1988
• Grant date: Dec 19, 1989
• Expiry date: Jul 28, 2008

Classification

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

Abstract

A tanning assistant useful in particular for tanning in combination with aluminum tanning agents is obtained by condensing melamine with glyoxal and/or glyoxylic acid and optionally with an aromatic compound which has a phenolic hydroxyl group or optionally with a condensable nitrogen compound.