Detergent powders and processes for producing them

Details Detergent powders and processes for producing them Detergent powders and processes for producing them

C - Chemistry, Metallurgy

11

D

134/3.72

C11D 17/06 (2006.01) C11D 3/08 (2006.01) C11D 3/12 (2006.01) C11D 11/02 (2006.01)

Patent

CA 1226194

-18- ABSTRACT OF THE INVENTION The formation of poorly-dispersible material by interaction between sodium silicate and sodium aluminosilicate in a detergent powder can be reduced my acidification of the slurry prior to spray-drying. An acid in an amount equivalent to from 1.5 to 3 parts by weight of hydrogen chloride per 6 parts of sodium silicate of sodium oxide to silica ratio 1 to 1.6 is added to precipitate at least part of the silicate. Optionally, a powder-structurant is present.

465816

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