Abstract: A novel opacifying composition for use with alkaline paper which does not react with alkyl succinic anhydride, is provided. The opacifier comprises a mixture of an aromatic polymer, preferably a styrene acrylic polymer, and a stearamide which preferably comprises either a mono-stearamide or a di-stearamide of amino ethyl ethanol amine or both a mono-stearamide or a di-stearamide of amino ethyl ethanol amine. The opacifying composition comprises the opacifier and water. The water is preferably present in an effective amount to provide the opacifying composition in a liquid, emulsion form. Preferably the opacifier comprises from 5% to 60%, more preferably from 15% to 50% , most preferably from 30% to 40% aromatic polymer and preferably from 40% to 95%, more preferably from 50% to 85%, most preferably from 60% to 70% of the stearamide. A base is preferably present in an effective amount to provide the opacifying composition with a pH of from 7.5 to 11.0.

Abstract: A novel method of opacifying paper, and a novel opacifier and opacifying composition which opacify as well as brighten paper, is provided. The novel opacifier comprises at least one diglyceride and at least one amino-ester compound. The opacifying composition comprises: solids and preferably water. The solids comprise opacifier and surfactant. Preferably, the opacifying composition is an emulsion of the solids in water.

Abstract: A chemical composition for use in the papermaking process to produce a paper having enhanced opaqueness is provided. The process using the composition to make the paper and the paper made therefrom are also provided by the present invention. The composition contains an alkyl bis (alkyl amido alkyl)-2-hydroxy alkyl ammonium alkyl salt.