Patent ID: 8980058
Filing Date: 2015-03-17
Classification: D21H

Abstract:
1. A modified filler composition, comprising: filler having negative charge; microfibrillated cellulose (MFC) having a dry weight of 0.1% to 10% of that of the filler, the microfibrillated cellulose being made by TEMPO catalytic oxidation method; and cationic polymer having a dry weight of 0.1% to 15% of that of the filler; wherein the microfibrillated cellulose has a carboxyl content of 0.06 to 1.7 mmol/g; the microfibrillated cellulose comprises water-soluble cellulose having a mass percentage on a dry solids basis of 0.1% to 50% and water-insoluble cellulose having a mass percentage on a dry solids basis of 10% to 99.9%.