METHOD TO PREPARE ANIONITES IN ANION-EXCHANGING MEMBRANES PRODUCTION Russian patent published in 1996 - IPC

FIELD: economic and drinking water supply systems. SUBSTANCE: preparation of anionites in anion-exchanging membranes production is exercised using their treatment with electrolytes solutions. As electrolytes solutions they use alkaline solution with concentration of no more than 0.3 mass % and/or water with mass ratio of electrolyte and anionite of 1.3 - 115 : 1. In the case molar ratio of alkaline in alkaline solution and anon-exchanging groups in anionite is of no more than 0.35 : 1. EFFECT: method allows to increase quality of anion-exchanging membranes. 2 cl, 1 tbl