Ionic coagulation in beater addition of binder latices in papermaking

Abstract From the Canadian patent

Paper-like sheets of fibers of cellulose ceramic, materials, acrylic, polyester nylon and other synthetic, textile materials and leather, cotton, wool, flax and, other naturally occurring textile materials having a surface which is essentially neutral to anionic in nature are made by the wet-laid method employing beater addition of binder latices with an ionic coagulation system. Such system employs the stepwise addition to the beater of at least three essential polymeric additions in the following order: (1) a polycationic hydrophilic, water-soluble or waterdispersible quaternary salt of a polymeric material containing polymer-bound halogen or amino quaternizing groups such as a …