Process for preparing detergent composition containing sodium and potassium oxides
First Claim
1. A process for the production of a detergent composition, comprising:
- adding effective detergent amounts of sodium oxide and potassium oxide to a ceramic material formed primarily of silicon oxide and aluminum oxide, whereby a dry ceramic powder is obtained;
adding water to the dry ceramic powder;
kneading and forming the resulting mixture into a predetermined shape, whereby a green body is obtained;
drying the green body;
firing the thus-dried green body at 500°
C. to 700°
C.;
impregnating the resulting fired body with an effective detergent amount of an aqueous solution of sodium metaphosphate; and
firing the thus-impregnated body again at a temperature in a range of from 200°
C. to 400°
C.
1 Assignment
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Accused Products
Abstract
A detergent composition comprises a fired ceramic body, which carries as effective ingredients sodium oxide and potassium oxide thereon. Sodium metaphosphate and/or calcium oxide may also be carried as optional ingredient(s). The fired ceramic body may be made of a ceramic material formed primarily of silicon oxide and aluminum oxide. Preferably, the detergent composition may be in the form of granules and may be enclosed in a container defining apertures through a wall thereof. These apertures are dimensioned so that the granular detergent composition are prevented from being lost therethrough. A granular detergent composition can be produced, for example, by adding sodium oxide and potassium oxide to a ceramic material, adding water to the resulting dry ceramic powder, kneading and forming the resulting mixture into a green body of a predetermined shape, drying the green body, firing the thus-dried green body at 500° C. to 700° C., impregnating the resulting fired body with an aqueous solution of sodium metaphosphate, and firing the thus-impregnated body again at a temperature in a range of from 200° C. to 400° C.
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Citations
2 Claims
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1. A process for the production of a detergent composition, comprising:
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adding effective detergent amounts of sodium oxide and potassium oxide to a ceramic material formed primarily of silicon oxide and aluminum oxide, whereby a dry ceramic powder is obtained; adding water to the dry ceramic powder; kneading and forming the resulting mixture into a predetermined shape, whereby a green body is obtained; drying the green body; firing the thus-dried green body at 500°
C. to 700°
C.;impregnating the resulting fired body with an effective detergent amount of an aqueous solution of sodium metaphosphate; and firing the thus-impregnated body again at a temperature in a range of from 200°
C. to 400°
C.
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2. A process for the production of a detergent composition, comprising:
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adding effective detergent amounts of sodium oxide and potassium oxide to a ceramic material formed primarily of silicon oxide and aluminum oxide, whereby a dry ceramic powder is obtained; adding water to the dry ceramic powder; kneading and forming the resulting mixture into green granules having a granule size in a range of from 3 mm to 10 mm; drying the green granules; firing the thus-dried green granules at 500°
C. to 700°
C.;impregnating the resulting fired granules with an effective detergent amount of a 3-8% aqueous solution of sodium metaphosphate; and firing the thus-impregnated granules at a temperature in a range of from 200°
C. to 400°
C.
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Specification