Aqueous synthetic resin dispersion

US5185387A · kind A · utility

Assignee

• Rohm Co., Ltd. · JP

Inventors

• Wolfgang Klesse · Mainz, DE
• Wilhelm Elser · Riedlingen, DE
• Theodor Mager
• Juergen Christner · Emmelshausen, DE
• Hertha Kraus · Pfungstadt, DE
• Peter Rossberg · Seeheim-Jugenheim, DE
• Marliese Weber · Rödermark, DE

Key dates

• Filing date: Sep 16, 1991
• Grant date: Feb 9, 1993
• Expiry date: Sep 16, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S525/902
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

An aqueous synthetic resin dispersion having a minimum film forming temperature below 50.degree. C., containing an emulsion polymer having a core/shell structure consisting of PA0 A) 65-90 percent by weight of a weakly crosslinked core polymer having a glass transition temperature, T.sub.g, below 0.degree. C. and an extensibility of at least 150 percent, and PA0 B) 10-35 percent by weight of an essentially non-crosslinked shell polymer having a T.sub.g below 60.degree. C. the T.sub.g of the core polymer being at least 10 Centigrade degrees below that of the shell polymer.