Staerkephosphate und Verfahren zu deren Herstellung

Die Erfindung betrifft ein Verfahren zur Herstellung von Staerkephosphaten mit geringem Carbamatgehalt, die einen hohen Substituierungsgrad hinsichtlich der Phosphatgruppen aufweisen. Ebenso betrifft die Erfindung derart hergestellte Staerkephosphate.

DE 102005004586 A1 UPAB: 20061101 NOVELTY - Preparation of highly-substituted starch phosphate comprising removing starch in a mixture of phosphatization agent that is free of dissolved urea, and water by pre-treatment, removing water from the obtained mixture and subsequently thermally converting to starch phosphate, is new. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a starch phosphate with a substitution degree at phosphate group of 0.01-2.0 and a carbamate concentration of less than or equal to 0.1. USE - The starch phosphate is useful as an additive in: mineral and dispersion-bound building material systems and pharmacy or cosmetics; as anionic component for polyelectrolyte complex and as substrate (particularly in agriculture) and for binding water (claimed). ADVANTAGE - The process is economical and simple.