Pre-formed super absorbers with high swelling capacity

US6156848A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Gunter Sackmann · Leverkusen, DE
• Sergej Schapowalow · Neunburg vorm Wald, DE
• Siegfried Korte · Odenthal, DE
• Rolf-Volker Meyer · Krefeld, DE

Key dates

• Filing date: Nov 4, 1997
• Grant date: Dec 5, 2000
• Expiry date: Nov 4, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2810/20
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Super-absorbent polymer in the form of pre-formed spherical particles obtainable by alkaline hydrolysis of aqueous emulsions of crosslinked and/or un-crosslinked homopolymers and/or copolymers of acrylonitrile in water/alcohol mixtures and the use of the polymer in hygiene products, as a water-storing material in agriculture and for the sheathing of electrical cables.