Paper coating or binding formulations and methods of making and using same

摘要

A paper coating or binding formulation comprises an aqueous polymer dispersion comprising a copolymer obtained by polymerization of an unsaturated monomer and a carbohydrate derived compound and a tetrasulfonate-based fluorescent whitening agent. The carbohydrate derived compound can be selected from the group consisting of dextrins, maltodextrins, and mixtures thereof. Methods of preparing a paper coating or binding formulation and improving the whitening properties of paper are also provided. Furthermore, paper including a copolymer obtained by polymerization of an unsaturated monomer and a carbohydrate derived compound and a tetrasulfonate-based fluorescent whitening agent is also disclosed.

主权项

1. A paper coating or binding formulation, comprising:
an aqueous polymer dispersion comprising a copolymer prepared by polymerizing monomers comprising 40% to 75% by weight of styrene, 25% to 60% by weight of butadiene, 1% to 10% by weight of itaconic and/or (meth)acrylic acid, 0% to 3% by weight of (meth)acrylamide, and 0% to 20% by weight of (meth)acrylonitrile in the presence of greater than 0% to less than 50% by weight, based on the total monomer weight, of a carbohydrate-derived compound having a dextrose equivalent (DE) of about 10 to about 35; and a tetrasulfonate-based fluorescent whitening agent, wherein the carbohydrate-derived compound is selected from the group consisting of dextrins, maltodextrins, and mixtures thereof.