AGENT D'ELIMINATION DU BORE ET PROCEDE ASSOCIE- Brevets EP1900409 (A1)

AGENT D'ELIMINATION DU BORE ET PROCEDE ASSOCIE

N° de brevet:	EP1900409 (A1)
Date de publication:	2008-03-19
Inventeur(s):	SUZUKI HIRONORI [JP];YABUSAKI KATSUMI [JP];
Demandeur(s):	KOWA CO [JP];
Classification:	B01D21/01;C02F1/58;
N° de demande:	EP20060767341 20060626
Numéro(s) de priorité:	WO2006JP312724 20060626;US20050695676P 20050630

Boron is removed from an aqueous boron solution by contacting with the aqueous boron solution with a water-soluble cationic polyelectrolyte, and at least one of polyvinyl alcohol and anionic-modified polyvinyl alcohol under an alkaline condition, and then removing the generated coagulation.