The present invention relates to a process for producing a water－absorbent polysaccharide comprising the process steps:－the bringing into contact of an uncrosslinked polysaccharide with a polyphosphate or a polyphosphoric acid as crosslinking agent in the presence of water to form a polysaccharide gel；－crosslinking of the polysaccharide gel.The invention further relates to a water－absorbent polysaccharide obtainable by this process, a water－absorbent polysaccharide, a composite, a process for producing a composite, a composite produced by this process, the use of the water－absorbent polysaccharides or of the composites as well as the use of polyphosphates.本發明係關於一種生產吸水性多醣之方法，包括下述之加工步驟：－使一未交聯多醣與作為交聯劑之多磷酸鹽(酯)或多磷酸在水的存在下接觸，以形成多醣凝膠；－交聯該多醣凝膠。本發明更進一步係關於一種藉由此方法所獲得之吸水性多醣、一種吸水性多醣、一種複合物、一種生產複合物之方法、藉由此方法生產的複合物、該等吸水性多醣或複合物之用途，以及多磷酸鹽(酯)的用途。
