Betz Paperchem, Inc.

Betz Laboratories, Inc.

Thomas E Taggart

Michael A Schuster

Alan J Schellhamer

Mary Beth Letscher

John C Harrington, Iv

Frank J Sutman

Irenee J Philippe

The present invention is directed to a method for increasing the retention on a washing/thickening device in an aqueous papermaking system. The method generally comprises adding to the furnish solids of the system an effective amount of a cationic polyacrylamide polymer.

Use of polymers in the recycled fiber washing/deinking process

The present invention is directed to a paper having improved properties, a process of producing the paper, and compositions used in the process of producing the paper. The invention generally comprises using a cationic starch in combination with a naturally anionic polysaccharide gum.

Papermaking using cationic starch and naturally anionic polysacchride

A process of making paper by forming a paper furnish comprised of cellulosic fibers or cellulosic fibers and mineral filler material suspended in water, depositing the furnish on a papermaking wire, and forming a sheet out of the solid components of the furnish while carried on the wire, the improvement wherein there is mixed into the furnish, prior to its being deposited on the wire, about 0.50 to 5 percent of cationic starch (based on the dry weight of total solids in the furnish) followed by about 5 to 20 percent of a water soluble carboxymethyl) cellulose (based on the weight of the cationic starch).

Papermaking using cationic starch and carboxymethyl cellulose or its

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Jacksonville, FL, United States of America

Thomas E Taggart