Multiple phase synthetic resin dispersion

US5306743A · kind A · utility

Assignee

• Rohm Co., Ltd. · JP

Inventors

• Wolfgang Klesse · Mainz, DE
• Gerhard Markert · Ober-Ramstadt, DE
• Marliese Weber · Rödermark, DE

Key dates

• Filing date: Apr 8, 1991
• Grant date: Apr 26, 1994
• Expiry date: Apr 8, 2011

Classification

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

Abstract

Aqueous synthetic resin dispersions comprising latex particles having an average particle diameter below 140 nanometers, consisting of PA0 a) 5 to 45 weight percent of a core material having a dynamic glass transition temperature above 60.degree. C. and PA0 b) 95 to 55 weight percent of a shell material having a dynamic glass transition temperature below 80.degree. C., whereby the dynamic glass transition temperature of the shell is at least 20 K. below that of the core, which dispersions have a low minimum film forming temperature and give films of low tackiness and high block point.