PRODUCT CONTAINING AN ANIONIC CELLULOSE DERIVATIVE AND ITS USE IN PAPER INDUSTRY

摘要

The present invention relates to a product comprising: - a microfibrillated cellulose composition, - a starch derivative, and - an anionic cellulose derivative having a number average molecular weight comprised between 300000 g/mol and 800000 g/mol, and a degree of substitution comprised between 0.3 and 0.65, as a combined preparation for simultaneous or separate use. The present invention also relates to the use of this product, as a strength additive for increasing the initial wet web strength and/or dry tensile strength of a paper sheet.