C - Chemistry – Metallurgy – 01 – G
Patent
C - Chemistry, Metallurgy
01
G
C01G 25/00 (2006.01) D21H 17/66 (2006.01) D21H 19/12 (2006.01) D21H 19/64 (2006.01) D21H 21/20 (2006.01)
Patent
CA 2682167
The invention relates to a process for the preparation of an aqueous composition of zirconium carbonate and an alkali metal salt in which a zirconium compound and an alkali metal bicarbonate are reacted, in the aqueous phase, with a bicarbonate to zirconium molar ratio equal to or greater than 4:1. The invention also relates to the use of the said aqueous composition of zirconium carbonate and an alkali metal salt as insolubilizing agent in a coating bath for paper or board.
L'invention concerne un processus destiné à la préparation d'une composition aqueuse de carbonate de zirconium et d'un sel métallique alcalin, ledit processus consistant à faire réagir un composé du zirconium et un carbonate de métal alcalin, dans la phase aqueuse, avec un rapport molaire bicarbonate sur zirconium égal ou supérieur à 4:1. L'invention concerne également l'utilisation de ladite composition aqueuse de carbonate de zirconium et d'un sel métallique alcalin en tant qu'agent insolubilisant dans un bain de revêtement pour papier ou carton.
Clariant Finance (bvi) Limited
Fetherstonhaugh & Co.
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