초록 ▼

This invention relates to a process of manufacturing granular sodium percarbonate and more particularly, to a process of a stable granular sodium percarbonate detergent composition having an excellent solution velocity when added to water, comprising the following steps: hydrogen peroxide solution i

This invention relates to a process of manufacturing granular sodium percarbonate and more particularly, to a process of a stable granular sodium percarbonate detergent composition having an excellent solution velocity when added to water, comprising the following steps: hydrogen peroxide solution is directly sprayed to unpurified anhydrous sodium carbonate to produce granular sodium percarbonate followed by the addition of a stabilizer having a new composition in a reactor or fluidized bed dryer, then recycling sodium percarbonate particles which are of nonuniform particle size back into the process for continuous manufacturing.

대표청구항 ▼

[ What is claimed is:] [1.] A process for manufacturing sodium percarbonate which comprises initially charging a reactor with solid sodium carbonate and at least one material selected from:(a) a sodium silicate aqueous solution expressed by the chemical formula EQU Na.sub.2 O,n(SiO.sub.2), x(H.sub.2

[ What is claimed is:] [1.] A process for manufacturing sodium percarbonate which comprises initially charging a reactor with solid sodium carbonate and at least one material selected from:(a) a sodium silicate aqueous solution expressed by the chemical formula EQU Na.sub.2 O,n(SiO.sub.2), x(H.sub.2 O)wherein, n is 1 to 4 and x is 0 to 9 or sodium silicate in granule or powder form and its aqueous solution;(b) a higher fatty acid or ester thereof with a carbohydrate or polyol or a composition where a polyoxyethylene is added to said ester;(c) a pyridine compound or its salts having one or more carboxyl groups as a substituent; or(d) an aromatic or aliphatic amine and its salts having one or more sulfonic acid groups or carboxyl groups; aying the sodium carbonate with hydrogen peroxide solution under flowing air, at a temperature from about 20.degree. C. to about 80.degree. C.; and stirring the reactants to thereby obtain sodium percarbonate; continuously drying the sodium percarbonate obtained; and wherein nonuniform particle size sodium percarbonate formed by the process is recycled for continuous manufacturing.