Deinking agent for reproduction of printed waste papers

摘要

The present invention relates to an deinking agent used for reproduction of printed waste papers such as newspapers, magazines, leaflets and the like, and mainly contains one or more additives selected from the group comprising (a) additives made by adding one or more selected from alkylene oxides to at least one selected from dimer acids and polymer acids of higher unsaturated fatty acids having a carbon number of 16-20; (b) additives made by adding one or more selected from alkylene oxides to at least one selected from partial esters which are made of an alcohol having a carbon number of 1-18 and dimer acids and polymer acids of higher unsaturted fatty acids having a carbon number of 16-20; (c) additives made by adding one or more selected from alkylene oxides to one or more selected from dicarboxylic acids or dicarboxylic acid monoesters.