Method for synthesis and purification of poly(methacrylic acid) copolymers from their salts

摘要

the object of the application is the way the synthesis and purification of poly (acrylic acid (met)) with their salt, which is thatthe copolymer (met) acrylic acid in the form of the sodium or potassium salts soluble in water zdejonizowanej concentration from 50% to 1% m / m, preferably 10% m / mthen the obtained solution is odsoleniu method elektromebranową with initial current density from 50 to 350 a / m2, preferably 250 a / m2 until the ph of the solution diuluatu,in which dissolved copolymer is determined below 4.8, favourable ph is equal to 3, after which the water vaporized at a temperature of 20 - 90°c, preferably 105 under pressure 40 - 70 mbar.advantageously 60 mbar.