Water-in-oil polymer dispersions with improved environmental compatibility

US6861469B2 · kind B2 · utility

Assignee

• Stockhausen GmbH & Co. KG · DE

Inventors

• Bernd Diener · Krefeld, DE
• Veronika Gehler · Krefeld, DE
• Erich Kuster · Krefeld, DE
• Daniel Roulands · Krefeld, DE
• Dieter Werhahn · Willich, DE

Key dates

• Filing date: Aug 8, 2001
• Grant date: Mar 1, 2005
• Expiry date: Aug 8, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S522/903
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to water-in-oil polymer dispersions consisting of a continuous organic phase and water-soluble polymers finely distributed therein, wherein said polymers have a radical monomer content of less than 1,000 ppm. The invention also relates to a method for producing the inventive polymer dispersions and to their use of flocculation auxiliary agents, thickening agents and as additives for phytosanitary and anti-erosion agents.