ALDEHYDGRUPPENHALTIGES POLYMERMATERIAL UND SEIN HERSTELLUNGSVERFAHREN

The invention relates to polymeric materials containing variable amounts of aldehyde groups and comprising the chain units where R1, R2 and R3 are H, C1 - C5 alkyl, aryl, furyl, halogen, nitrile group or hydroxyl and R4 is C1 - C20 alkylene, arylene, -COO(CH2)n-, -O-(CH2)n-, -COO(CH2)nCH(OH)CH2OCO(CH2)m- or -(CH2)nOCOR5COO(CH2)m- (n and m are integers 0 - 20 and R5 is the single bond, C1 - C20 alkylene or hydroxyalkylene or arylene). The material may be in the form of globules with a measurable specific surface area and is suitable for bonding of biologically active compounds containing primary amino groups or other amines to produce polymeric chelating agents. The invention further relates to the method for preparation the above materials which consists in treatment of the polymeric materials comprising units of the general formula where R1, R2, R3 and R4 have the aforesaid meaning and R6 is H, C1- C20 alkyl or aryl, with the aqueous solution of periodic acid at 0 DEG - 200 DEG C and the pressure 1 Pa to 20 MPa.