National Starch and Chemical Investment Holding Corporation

National Starch and Chemical Corporation

Other

Walter Maliczyszyn

Emil D Mazzarella

John J Tsai

Jeffrey G Atkinson

Paul A Altieri

Christopher L Kulp

David C Rawlins

Leonard J Wood, Jr

Henry R Hernandez

Wolfgang Bindzus

Leroy R Peek

Maria Tolchinsky

Teresa A Capitani

Paul Gregory

Michel D L&eacute;tourneau

Paper having improved retention properties made by the addition to the papermaking system of a combination of cationic starch and starch phosphate, the starch combination having a select net zeta potential.

Starch polymer combinations used in papermaking

A one-pass, non-tolerance dependent method for preparing paper size emulsions comprising an aqueous emulsion of a substituted cyclic dicarboxylic anhydride, a colloidal stabilizer, and a surfactant wherein the emulsion after one-pass through a dispersion system has an average particle size of less than 2 microns.

One-pass method for preparing paper size emulsions

A method for preparing hydrophobic starch derivatives wherein starch and an anhydride are reacted in a slurry with the anhydride reagent being added to the slurry in pre-emulsified form to provide a significantly faster and more efficient reaction.

Method for preparing hydrophobic starch derivatives

An expanded shaped product with improved flexural compressibility and surface properties comprising starch and a hydrophobically modified acid anhydride or its acid hydrolyzed counterpart and the method of preparing such product by extrusion.

Starchfoam products with improved flexibility/compressibility and the

Starch foam products with improved flexibility/compressibility and the

The method of making paper wherein the use of a selected ether or ester modified, cationic starch as an additive in the papermaking wet end provides significantly improves retention and drainage properties particularly in alkaline microparticle containing systems.

Method of papermaking using modified cationic starch

A paper size composition comprising an aqueous dispersion of:

Method of paper sizing using modified cationic starch

The invention involves the method of sizing paper products using a size composition comprising an aqueous dispersion of:

A method of preparing high solids liquid starch is provided using a modified two step batch cooking procedure.

High solids liquid starch prepared by batch cooking

This invention presents a series of blends of ASA-treated and cationic starches for use as external sizes of paper and paperboard products. The blends contain at least 30% (by wt) of the ASA-treated starch, which is a monoester of the starch and an alkyl or alkenyl succinate and, optionally, from about 0.5 to about 5% (by weight based on the starch) of an Al.sup.3+ salt.

Starch blends useful as external paper sizes

A shelf stable paper size is prepared from a mixture of a substituted cyclic dicarboxylic acid anhydride and an ethoxylated castor oil.

Storage stable paper size composition containing ethoxylated castor oil

A shelf stable paper size is prepared from a mixture of a substituted cyclic dicarboxylic acid anhydride and an ethoxylated lanolin.

Storage stable paper size composition containing ethoxylated lanolin

A size mixture comprising a higher organic ketene dimer and polyoxyalkylene alkyl or alkyl-aryl ether or the corresponding mono- or di-ester is used to size paper products. In accordance with a preferred embodiment the liquid size mixture is added directly to the paper stock system without prior emulsification.

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Somerville, NJ, United States of America

Walter Maliczyszyn