A PROCESS FOR PREPARING ALKALI METAL SALTS OF POLYACRYLIC ACID BASED ON POLYSACCHARIDE

摘要

The present invention relates to a process for preparing alkali metal salts of polyacrylic acid based on polysaccharide. They are gained in high yield by graft reaction of acrylic monomers on to polysaccharide in the presence of redox catalyst in aqueous alcohol solution, followed by neutralization with sodium hydroxide-water solution. The products show good properties for both chelating ability for heavy metal ions and biodegradability by enzyme.