It is low, as it circulates the production manner of alkaline water glass and the production mannered null water

摘要

PROBLEM TO BE SOLVED: To provide a method for producing low-alkali water glass by a simple production process giving the water glass with sufficient bonding power and stability while highly concentrated/lowly alkalized to a satisfactory extent.;SOLUTION: This method for producing the low-alkali water glass comprises a step of making water glass into low alkalinity by a weakly acidic cation-exchange resin 14, thereby making SiO₂ concentration to 10-15 mass% and SiO₂/Na₂O molar ratio to 8 or higher but lower than 20.;COPYRIGHT: (C)2006,JPO&NCIPI