Use of phenolsulfonic acid-formaldehyde condensation products as drying aids

US6028167A · kind A · utility

Assignee

• BASF SE

Inventors

• Joachim Pakusch · Ludwigshafen, DE
• Maximilian Angel · Mutterstadt, DE
• Joachim Roser · Dessel, BE
• Andree Dragon · Speyer, DE
• Heinrich Sack · Haßloch, DE

Key dates

• Filing date: Jan 20, 1999
• Grant date: Feb 22, 2000
• Expiry date: Jan 20, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J3/122
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Phenolsulfonic acid-formaldehyde condensates are used as assistants in the drying of aqueous polymer dispersions. Also described are a process for preparing polymer powders by drying, using these condensates; the polymer powders obtainable by the process; and their use as binders.