Starch intermediate product, a process for producing a starch intermediate product, and a process for further processing of a starch intermediate product

US5430140A · kind A · utility

Assignee

• EMS-Inventa AG · CH

Inventors

• Rainer Frische · Frankfurt, DE
• Bernd Best · Mörfelden, DE
• Hermann Schomann · Langen, DE
• Heinz G. Roff · Domat/Ems, CH

Key dates

• Filing date: Jul 16, 1993
• Grant date: Jul 4, 1995
• Expiry date: Jul 16, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L3/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for producing a starch intermediate product in which the reactive hydroxy groups are activated by swelling and disintegrating starch with dilute aqueous-alkali lye, precipitating the disintegrated starch from an aqueous-alkali solution by adding a precipitant which is miscible with water, separating the precipitated disintegrated starch, which exists in a highly activated form, from the filtrate producing a starch intermediate product, and drying the starch intermediate product. A starch intermediate product produced by this process results in a starch which exists in a highly activated form but which is stable in storage.