Aldehyde-containing urea-absorbing polysaccharides

US4041233A · kind A · utility

Inventors

• James C. Administrator of the National Aeronautics and Space Fletcher
• William A. Mueller · Glendale, US
• George C. Hsu · La Cañada Flintridge, US
• Harold E. Marsh, Jr. · Tustin, US

Key dates

• Filing date: Mar 15, 1976
• Grant date: Aug 9, 1977
• Expiry date: Mar 15, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08B15/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A novel aldehyde-containing polymer (ACP) is prepared by reaction of a polysaccharide with periodate to introduce aldehyde groups onto the C.sub.2 - C.sub.3 carbon atoms and by introduction of ether and ester groups onto the pendant primary hydroxyl to modify solubility characteristics. The ACP is utilized to absorb nitrogen bases such as urea in vitro or in vivo.