Method for the preparation of borate-containing, dispersible, water-soluble polygalactomannans

US4645833A · kind A · utility

Assignee

• Sherex Chemical Co., Inc. · US

Inventors

• Friedrich Bayerlein · Krailling, DE
• Peter Habereder
• Nikolaos Keramaris · Eichenau, DE
• Nikolaus Kottmair · Gauting, DE
• Manfred Kuhn · Frankfurt am Main, DE

Key dates

• Filing date: Sep 21, 1982
• Grant date: Feb 24, 1987
• Expiry date: Sep 21, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08B37/0096
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Method for preparation of dispersible, water-soluble polygalactomannans and polygalactomannan derivatives by crosslinking with borate ions, in which the polygalactomannan-containing endosperm of legumes is allowed to soak in an aqueous alkaline solution of a material containing borate ions in which the concentration of the borate ions, expressed as borax, is between 0.001 and 0.09 wt % and the hydroxyl ion concentration, expressed as NaOH, is between 0.2 and 10 wt % of the polygalactomannan and after taking up the solution, the cell structure of the splits is mechanically destroyed using high shear forces in a flaking, crushing or extruder process and then the product of the process is dried and ground in known fashion.