Process for preparing an amino group-containing polyacrylonitrile polymer

摘要

Acrylonitrile polymer containing amino groups and having a porous structure containing micro-pores with an average size of from 50 to 2000 ANGSTROM and pore volume of not less than 0.2 cm3/g is prepared by reducing an acrylonitrile polymer having said porous structure in an inert non-solvent for said polymer with lithium aluminum hydride. The polymer obtained is useful as a carrier for enzymes.