Water-dilutable etherified melamine-formaldehyde resins

US6579964B2 · kind B2 · utility

Assignee

• Solutia Germany GmbH & Co. KG · DE

Inventors

• Johann Wonner · Frankfurt am Main, DE
• Frank Scholl · Schwieberdingen, DE
• Karin Schloettig · Maintal, DE
• Guenter Woelfert · Frankfurt am Main, DE

Key dates

• Filing date: Oct 31, 2001
• Grant date: Jun 17, 2003
• Expiry date: Nov 13, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G12/427
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Water-dilutable etherified melamine-formaldehyde resins obtained by reacting melamine, formaldehyde, a compound having anionic groups and an etherification alcohol in a mixing ratio of melamine:formaldehyde:compound having anionic group:etherification alcohol of 1:(1.7 to 7.0):(0.01 to 0.4):(10 to 30) in the reaction mixture, are prepared in a multistage process and are used for preparing impregnates, especially glass fiber fleece and in paper coating.