Method for making a spray dried emulsion polymer

US5017631A · kind A · utility

Assignee

• Rohm Co., Ltd. · JP

Inventors

• Hubert Rauch · Weiterstadt, DE
• Peter J. Arndt · Seeheim-Jugenheim, DE
• Wolfgang Klesse · Mainz, DE
• Wilhelm Krall · Darmstadt, DE
• Klaus Frank · Hannover, DE

Key dates

• Filing date: Dec 26, 1989
• Grant date: May 21, 1991
• Expiry date: Dec 26, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L33/12
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Powders of an emulsion polymer having reduced fines and exhibiting low dusting are made by spray drying an emulsion of a polymer having a Vicat softening temperature above 60.degree. C., said emulsion containing an external plasticizer having a boiling point of at least 150.degree. C.