Gel formers having reduced gelling time and forming gels with improved melting resistance

US5709821A · kind A · utility

Assignees

• BAYER HEALTHCARE LLC · DE
• Schott Glaswerke · DE

Inventors

• Wulf von Bonin · Leverkusen, DE
• Roland Leroux · Stadecken-Elsheim, DE
• Markus Steigenberger · Bischofsheim, DE
• Thomas Karschti · Budenheim, DE
• Markus Ring · Westhofen, DE

Key dates

• Filing date: Jan 16, 1996
• Grant date: Jan 20, 1998
• Expiry date: Jan 16, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S516/927
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Gel formers comprising acid aluminum phosphate and a reaction product of boric acid and an alkanolamine, and further comprising alkali metal compounds in the aluminum: alkali metal ratio of 1:1.3-2.5 require short gelling times, and form gels having improved melting resistance.