PAPER-COATING COMPOSITION COMPRISING AN AQUEOUS BINDER; A WATER-SOLUBLE RESIN OBTAINED FROM AT LEAST ALKYLAMINE AND UREA; AND AN AMINE OR A QUATERNARY AMMONIUM SALT OR A POLYAMIDE

摘要

A paper coating composition comprises (I) a pigment, (II) an aqueous binder, and (III) a water-soluble resin obtained by the reaction of at least (a) an alkylenediamine or a polyalkylenepolyamine, (b) a urea compound, and (c) a compound selected from aldehydes, epihalohydrins, and is further improved by incorporating therein (IV) a compound selected from (f) amines selected from monoamines, diamines and their salts each having at least 4 carbon atoms, (g) quaternary organic ammonium salts, and (h) polyamides obtained by the reaction between a dibasic carboxylic compound and a polyamine. The water-soluble resin of the component (III) may be further allowed to react with a dibasic carboxylic compound, and alicyclic amine and/or an alicyclic epoxy compound in addition to the above three ingredients (a)-(c). Paper coated by using the above composition has excellent ink-receptivity and water-resistance.