HYDROLYTICALLY STABLE ISOELECTRIC HYDROGEL COMPOSITIONS

摘要

An hydrolytically stable isoelectric hydrogel material comprising a single isoelectric compound having a defined pI value from I to 12 being incorporated into a hydrogel formed by reacting an oligo- or polyhydroxy compound with the single isoelectric compound and a difunctional or oligofunctional crosslinker, wherein after incorporation of the sinlge isoelectric compound into the hydrogel, the hydrogel material becbme' s an ampholytic material.