PROCESS FOR PREPARING CALCIUM SALTS OF HEPARINS WITH LOW MOLECULA WEIGHT BY ELECTRODIALYSIS

摘要

(57) EXTRACT The present invention relates to a process for the preparation of calcium salts of heparin calcium salt or of heparin derivatives having a molecular weight of 2000 to 20 000 using the corresponding sodium salt and water-alkaline salt as the starting material. The process of this invention are conducted in solution containing hőgyheparin sodium salt solution or a low molecular weight heparinszármazéknátriűmsóját water soluble calcium űmsóőldattalösszekevernek and this mixture an electrodialysis berendezéscelláinak set for anions alternately disposed permeable átjárhatómembránők and cation membranes stone there áramőltatjákát then flowing above cells solution of heparin or a heparin derivative calcium salt is obtained by using membrane membranes having a molecular weight of less than about 500 songs. ŕ