Cellulosic materials internally sized with ammoniated acid copolymers and epihalohydrin/alkylamine reaction products

摘要

Cellulosic materials such as paper are internally sized by treating fibers of the cellulosic material, e.g., paper pulp, with a copolymer of an alpha , beta -ethylenically unsaturated hydrophobic monomer and an ammoniated alpha , beta -ethylenically unsaturated carboxylic acid and a reaction product of epihalohydrin and alkylamine. Internal sizing of the cellulosic material by this method can be carried out over complete range of pH and is not adversely affected by the presence of contaminants such as alum.