Biologisch abbaubares, hydrophiles, vernetztes Polymer, Verfahren zu seiner Herstellung und seine Verwendung

摘要

The invention provides biodegradable crosslinked polymers, which have a chelating effect and a dispersing effect to disperse an oily substance and an inorganic substance hardly soluble in water and are excellent in dispersion into water. The crosslinked polymers comprise; an ingredient of molecular weight 5,000 or less in 50 % by weight, a bond having at least one of a group ( II ) represented by the chemical formula - CO - O - and a group ( III ) represented by the chemical formula - CO - NH - as a composition unit between main chains having a water-soluble oligomer structure having the functional group ( I ) represented by the general formula - COOM ( here, M denotes anyone of a hydrogen atom, monovalent metal, divalent metal, trivalent metal, an ammonium group and organic amine group. ), and showing a viscosity of 1,000 cP or less at 20 DEG C by a 20 % by weight aqueous solution of the crosslinked polymer.