Processes for preparing sodium percarbonate

Details Processes for preparing sodium percarbonate Processes for preparing sodium percarbonate

1978-01-11

1980-02-26

Thomas, Earl C.

Chemistry of inorganic compounds

Carbon or compound thereof

Oxygen containing

C01B 1510

Patent

active

041906357

ABSTRACT:
Improved processes for preparing sodium percarbonate, 2Na.sub.2 CO.sub.3.3H.sub.2 O.sub.2, which can have an apparent density of 0.6 to 1 g/cm.sup.3 and a mean particle diameter of 210 to 610 microns, which processes comprise treating a sodium carbonate monohydrate or hydrate having 75 to 90% of Na.sub.2 CO.sub.3 and having a density equal to or even greater than 1.2 g/cm.sup.3 with 60 to 80% aqueous hydrogen peroxide, the reaction mixture containing a small quantity of nonionic surfactant stable in hydrogen peroxide and alkaline solutions, the percarbonate formed being well adapted for use in detergent compositions.

REFERENCES:
patent: 4018874 (1977-04-01), Mollard
patent: 4022874 (1977-05-01), Mollard et al.
patent: 4025609 (1977-05-01), Matsunaga

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