Resin solution for the impregnation of paper webs

US5306783A · kind A · utility

Assignee

• BASF SE

Inventors

• Uwe Kirchgaessner · Bischofswerda, DE
• Jakob Decher · Frankenthal (Pfalz), DE
• Christof Jaeckh · Heidelberg, DE
• Otto Wittmann · Bischofswerda, DE
• Manfred Niessner · Schifferstadt, DE
• Harro Petersen · Bischofswerda, DE

Key dates

• Filing date: Dec 4, 1992
• Grant date: Apr 26, 1994
• Expiry date: Dec 4, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L75/02
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

An aqueous resin solution for the impregnation of paper webs contains 2-40 parts by weight of a polyurea composed of urea and of a polyamine per 100 parts by weight of a melamine/formaldehyde precondensate. The impregnated paper webs are suitable for coating woodbase materials, especially chipboard.