Patent ID: 6080332
Filing Date: 2000-06-27
Classification: B01J,C08F,Y02P

Abstract:
A process for anti-scaler production for coating monomer polymerization reactors, wherein said anti-scaling product is obtained by the reaction between the sodium salt of hydroxymethanesulphinic acid with naphthol, comprising mixing hydroxymethanesulphinic acid with the 1-naphthol in weight proportions of 1 to 1.5, in an aqueous solution of 10 to 40%, and bringing the temperature of the solution between 70.degree. and 95.degree. C. in a nitrogen atmosphere and alkaline environment of pH 11-13, in order to obtain a clear transparent product,the process being carried out in such a way that the resulting product is clearly transparent in absence of the oxygen contact.