Use of naphthalenesulfonic acid-formaldehyde condensates products as drying aids

US6762221B1 · kind B1 · 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 22, 1999
• Grant date: Jul 13, 2004
• Expiry date: Jan 22, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2103/0057
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

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