Method For Increasing The Advantages Of Starch In Pulped Cellulosic Material In The Production Of Paper And Paperboard


Ontology type: sgo:Patent     


Patent Info

DATE

2016-08-17T00:00

AUTHORS

KRAPSCH, LUDWIG , MC GREGOR, CHRISTOPHER JOHN , MALLARD DE LA VARENDE, JEAN VICTOR

ABSTRACT

The invention relates to a method for increasing the benefit from starch in pulped, preferably repulped cellulosic material at paper or paperboard manufacturing comprising the steps of (a) pulping a cellulosic material containing a starch; (b) treating the cellulosic material containing the starch with one or more biocides, preferably in the thick stock area; and (h) adding an ionic polymer and preferably, an auxiliary ionic polymer to the cellulosic material; wherein the ionic polymer and the optionally added auxiliary ionic polymer preferably have a different average molecular weight and preferably a different ionicity, wherein the tonicity Is the molar content of ionic monomer units relative to the total amount of monomer units. More... »

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