Adducts based on cyclic compounds and the use thereof as tanning agents and curing agents

US7410504B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Stephan Hueffer · Ludwigshafen, DE
• Oliver Reese · Lemförde, DE
• Walter Gramlich · Edingen-Neckarhausen, DE
• Stefan Schroeder · Neuleiningen, DE
• Guenter Scherr · Ludwigshafen, DE
• Volker Bach · Neustadt, DE

Key dates

• Filing date: Jan 21, 2004
• Grant date: Aug 12, 2008
• Expiry date: Jan 21, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C14C9/02
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Adducts are obtained by reacting carbonyl compounds of the formula Iwhere R1 and R2 are as defined, with cyclic compounds of the formula IIwhere X is selected from oxygen, sulfur and N—R8, R3-R8 are as defined, and n is an integer from 1 to 4, which adducts are useful as tanning agents and preservatives.