Use of particulate polymers as filter aids for aqueous liquids

US6733680B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Helmut Witteler · Monsheim, DE
• Christian Drohmann · Schifferstadt, DE
• Axel Sanner · Bischofswerda, DE
• Loni Schweikert · Kaiseraugst, CH
• Karl Kolter · Ludwigshafen am Rhein, DE

Key dates

• Filing date: Dec 19, 2001
• Grant date: May 11, 2004
• Expiry date: Dec 19, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C12H1/0424
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The description is given of the use of particulate water-insoluble polymer preparations comprising at least one polymer P that is essentially made up of hydrophilic polymer segments and hydrophobic polymer segments as filter aids for filtering aqueous liquids.