PROCESS FOR THE PREPARATION OF LOW-TOXIC UREA FORMALDEHYDE RESIN

摘要

A process for the preparation of low-toxic urea formaldehyde resin by condensation of carbamide with formaldehyde-containing gases of urea formaldehyde resins production at heating at first in alkaline medium, then in acid medium up to obtaining of precondensate and by aftercondensation with carbamide, by two stage addition of carbamide in the presence of catalytic agent.