METHOD FOR PREPARING POLY AMINOAMIDE-EPICHLOROHYDRIN (PAE) RESIN FOR PAPERMAKING WITH 1,000 PPM DCP OR LOWER IN RESPONSE TO REGULATION ON HAZARDOUS CHEMICALS

摘要

The present invention relates to a method for preparing a PAE resin with a DCP content of 1,000 ppm or lower and a bearing capacity enhancer comprising the same. The method comprises the steps of: (a) preparing a protein hydrolysate solution by extracting and purifying an organic waste resource generated from a shaving scrap process for leather through an alkali material and enzyme mixing process; and (b) making water-soluble polyamino amide by reacting the prepared protein hydrolysate solution with dicarboxylic acid containing two carboxyl groups as well as multi-amine and alkylating secondary amine included therein with epichlorohydrin.;COPYRIGHT KIPO 2020