Hercules Corporation

Solenis Technologies, L.p.

Solenis Technologies Cayman, L.p.

Susan M Ehrhardt

Kyle J Bottorff

David H Dumas

Clement L Brungardt

John C Gast

Jian-Jian Zhang

D Bruce Evans

Daniel F Varnell

Cecil Coutinho

Donald Kirkbright Black

A composition and method for imparting paper and paperboard with resistance to aqueous penetrants using renewable biopolymers, and the resulting paper and paperboard, are disclosed. The renewable biopolymers when combined with water-soluble, hydroxylated polymers or water-soluble salts and applied to the surface of paper or paperboard, results in resistance to aqueous penetrants.

Biopolymer sizing agents

Method for improving the resistance of paper and paperboard to aqueous penetrants

A size press composition for improving properties of lignocellulosic material is provided herein. The size press composition includes an aluminum salt and an anionic styrene acrylate emulsion sizing agent. The aluminum salt and the anionic styrene acrylate emulsion sizing agent are substantially homogeneously dispersed within the size press composition based on visual observation utilizing a microscope at 10&#xd7; magnification. A size press composition formed by a process is also provided herein. The process includes combining a dye and a starch to form a dye mixture. The process further includes combining the dye mixture, a styrene acrylate emulsion sizing agent, and an aluminum salt to form the size press composition. The dye, the starch, the aluminum salt, and the styrene acrylate emulsion sizing agent are substantially homogeneously dispersed within the size press composition based on visual observation utilizing a microscope at 10&#xd7; magnification.

Compositions and methods for improving properties of lignocellulosic materials

This technology relates to a method of sizing paper through the use of an aqueous solution of ketene dimer and vinylamine-containing polymers. It also relates to the stability of the ketene dimer/polyvinylamine solution.

Method of sizing paper

Disclosed is a sizing composition comprising a hydrophobic paper sizing agent and a hydrophobically modified poly(aminoamide). Also disclosed is a method of making the sizing composition and a method of using the sizing composition.

Sizing compositions

A stable paper sizing composition comprising a dispersion of ketene dimer and a pH adjusted vinylamine containing polymer is disclosed. The method of preparing the stable sizing composition and the method of using the stable sizing composition is also disclosed.

Paper sizing composition

This invention teaches the stabilization a dispersion of rosin using an alkanolamine salt of the rosin. The stabilized dispersion is used as a sizing agent in papermaking processes.

Alkanolamine-stabilized dispersed rosin sizing agents and their preparation

Fine paper that is sized with a 2-oxetanone alkaline sizing agent and that does not encounter machine feed problems in high speed converting or reprographic machines, including continuous forms bond paper and adding machine paper, processes for converting the paper into envelopes, continuous forms bond paper and adding machine paper, and paper products of the processes.

2-oxetanone sizing agents and their use in paper

Discloses is a method for sizing paper at a pH of about 5.0 to about 8.5 by incorporating a sizing composition consisting essentially of (a) rosin, (b) at least one hydrocarbon resin, (c) a cationic component consisting essentially of a cationic polyamine resin at a weight ration of the rosin/hydrocarbon resin blend to cationic polyamine of about 5:1 to about 1:2, and (d) up to 0.3% alum. The cationic polyamine resin is selected from the group consisting of polyalkyleneamine-epihalohydrin resins, polyalkyleneamine-dicyandiamide-epihalohydrin resins, poly(diallylamine&bull;HCl)-epihalohydrin resins, poly(methyldiallylamine&bull;HCl)-epihalohydrin resins, epihalohydrin-modified polyethyleneimine resins, amine-modified poly(methyldiallylamine&bull;HCl)-epihalohydrin resins, and mixtures thereof.

Rosin/hydrocarbon resin size for paper

Disclosed is a method for sizing paper at a pH of about 5.0-8.5 by incorporating a sizing composition consisting essentially of (1) rosin, (2) a cationic polyamine resin at a weight ratio of rosin to cationic polyamine of about 5:1 to about 1:2, and (3) up to 0.3% alum. The cationic polyamine resin is selected from the group consisting of polyalkyleneamine-epihalohydrin resins, polyalkyleneamine-dicyandiamide-epihalohydrin resins, poly(diallylamine.HCl)-epihalohydrin resins, poly(methyldiallylamine.HCl)-epihalohydrin resins, epihalohydrin-modified polyethyleneimine resins, amine-modified poly(methyldiallylamine.HCl)-epihalohydrin resins and mixtures thereof.

Growing community of inventors

Haddonfield, NJ, United States of America

Susan M Ehrhardt