Abstract: A method of reducing the level of malodorous amines emitted by paper when exposed to an alkaline environment is provided, which comprises making the paper so that it does not contain ammonium groups that are bonded to any polymer contained in the paper by only one chemical bond. Laminates which emit reduced levels of amines and which are comprised of this paper are also provided. In a preferred embodiment, the paper is sized with a sizing emulsion comprised of alkenyl succinic anhydride and a cationic water-soluble polymer having ammonium groups that are attached to the polymer by at least two chemical bonds.

Abstract: This invention relates to paper sizing compositions comprised of at least one sizing agent selected from ASA, AKD and rosin where the at least one sizing agent is emulsified in water, at least one emulsion stabilizer, and from about 0.01% to about 15% by weight of at least one hydrophobic substance, based on the total weight of sizing agent present, provided that the hydrophobic substance is not highly alkoxylated. The sizing promotion efficiency of the paper sizing compositions, as determined by at least one method selected from the Cytec size testing method, the Hercules size testing method, and the Cobb size testing method, is greater than or equal to about 4. Exemplary hydrophobic substances include fatty acid esters, triglycerides, hydrocarbons, esters and/or amides derived from ASA, silicone oils, alcohols, and stearic anhydride. The invention also relates to methods for sizing paper products with these paper sizing compositions and paper or paperboard treated with these sizing compositions.