PROCESS FOR PREPARING HIGH STRENGTH PAPER

摘要

The present invention provides a process for the preparation of an aqueous composition comprising polysilicate coated mineral particles, wherein the process comprises subjecting an aqueous composition comprising gelled polysilicate and a mineral to shear of at least 5'000 rpm for at least 30 seconds. The present invention also provides polysilicate coated mineral particles obtainable by this process as well as paper filled with these particles.