Modification of paper coating rheology
OwnerHoward Dungworth, David Petty +1inventors
InventorsHoward Dungworth, David Petty, Olli Jokinen
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Abstract
Thickener compositions for addition to paper coating compositions in order to obtain low high shear viscosity and good water retention. The thickener compositions comprise an associative thickener with an associative content below 10%, a molecular weight below one million and an acid content of at least 10% by weight.
Claims20
A thickener composition for modifying the rheology of paper coatings comprising an associative thickener characterised in that the associative content is below 10%, the molecular weight of the thickener is below about 1 million and the acid content is at least 10% by weight.
Dependencies are inferred from the claim text.