Patent GB-196839-A (GB)
Title: Improved manufacture of detergents and bleaching agents
IPC: D06L4/12
Filed: 1922-06-06
Abstract: Solid products for use as detergents and bleaching agents are obtained by causing sodium peroxide and bicarbonate to react in a solution of waterglass, preferably in presence of protective substances as for example magnesium, calcium, or other alkaline-earth silicates.  Hydrogen peroxide may be added to increase the percentage of active oxygen, soda to reduce it.  The product is preferably dried to improve its keeping power.  In an example, 1 part of peroxide was added to 3 of water-glass of 30 DEG  B<\>ae., and then 2 molecules of bicarbonate for each one of peroxide.  In a second, 200 gm. of a 30-per-cent sodium silicate solution were mixed with a solution of 200 gm. of magnesium chloride, and then added to a mixture of 500 gm. of water-glass of 1.3 sp. gr. with 330 ccs. of water.  330 gm. of sodium peroxide were then stirred in and afterwards 880 gm. of 91-per-cent bicarbonate were added and the whole well mixed and ground.  On drying, 1570 gm. of the product were obtained containing 3.7-3.8 per cent of active oxygen.ALSO:Solid products for use as detergents and bleaching agents are obtained by causing sodium peroxide and bicarbonate to react in a solution of water-glass, preferably in presence of protective substances as for example magnesium, calcium, or other alkaline-earth silicates.  Hydrogen peroxide may be added to increase the percentage of active oxygen, soda to reduce it.  The p  product is preferably dried to improve its keeping.  In an example, 1 part of peroxide is added to 3 of waterglass of 30 DEG  B<\>ae., and then 2 molecules of bicarbonate for each one of peroxide.  In a second, 200 gm. of a 30 per cent sodium silicate solution are mixed with a solution of 200 gm. of magnesium chloride, and added to a mixture of 500 gm. of water-glass of 1.3 specific gravity with 330 cc. of water. 330 gm. of sodium peroxide are then stirred in, and afterwards 880 gm. of 91 per cent bicarbonate are added, and the whole well mixed and ground.  On drying, 1570 gm. of the product are obtained containing 3.7-3.8 per cent of active oxygen.ALSO:Solid products for use as detergents and bleaching agents are obtained by causing sodium peroxide and bicarbonate to react in a solution of water-glass, preferably in presence of protective substances as for example magnesium, calcium, or other alkaline-earth silicates.  Hydrogen peroxide may be added to increase the percentage of active oxygen, soda to reduce it.  The product is preferably dried to improve its keeping power.  In an example, 1 part of peroxide was added to 3 of water glass of 30 DEG B<\>ae, and then 2 molecules of bicarbonate for each one of peroxide. In a second, 200 gm. of a 30 per cent sodium silicate solution were mixed with a solution of 200 gm. of magnesium chloride, and then added to a mixture of 500 gm. of water-glass of 1.3 sp. gr. with 330 cc. of water, 330 gm. of sodium peroxide were then stirred in and afterwards 880 gm. of 91 per cent bicarbonate were added and the whole well mixed and ground.  On drying, 1570 gm. of the product were obtained containing 3.7-3.8 per cent of active oxygen.