Mechanically stable hydrogel-forming polymers

US6414214B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Friedrich Engelhardt · Frankfurt, DE
• Volker Frenz · Hochheim, DE
• Norbert Herfert · Charlotte, US
• Ulrich Riegel · Landstuhl, DE
• Matthias Weismantel · Bad Orb, DE
• Wilfried Heide · Freinsheim, DE

Key dates

• Filing date: Oct 4, 1999
• Grant date: Jul 2, 2002
• Expiry date: Oct 4, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J3/245
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Hydrogel-forming polymers which have:(i) a Saline Flow Conductivity of at least 40×10−7 cm3s/g;(ii) an AUL 0.7 psi (4826.5 Pa) of at least 20 g/g; and(iii) a Frangibility Index of at least 60%,are useful in hygienic articles such as incontinence briefs for adults and diapers for infants.