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BERCHEM® 4811 is an effective pigment dispersant based on the chemistry of sodium hexametaphosphate. BERCHEM® 4811 can be used in both calcium carbonate and koalin clay based coating formulations. Several advantages with BERCHEM® 4811 are improved runnability, while significantly lowering the number of scratches, weeping and wiskering at the point of coating application on the paper / paperboard sheet.
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