Detergent builders and process for preparation thereof

Details Detergent builders and process for preparation thereof Detergent builders and process for preparation thereof

C - Chemistry, Metallurgy

11

D

252/15, 134/3

C11D 3/08 (2006.01) C11D 3/00 (2006.01) C11D 3/12 (2006.01)

Patent

CA 1087152

ABSTRACT OF THE DISCLOSURE A detergent builder consisting essentially of an inorganic fine powder composed mainly of an alkali metal aluminosilicate having an X-ray diffraction pattern substantially same as that of zeolite of the type A and having a degree of crystallization in the range of from 35 to 75%, wherein said inorganic fine powder has a primary particle size smaller than 1 µ and a secondary particle size smaller than 4 µ, said inorganic fine powder has a buffer capacity (S) of at least 132 m?/100 g. of solids, said buffer cap- acity being expressed by an amount of hydrochloric acid necessary for lower- ing the pH of a 1% aqueous dispersion of said inorganic fine powder from 9.0 to 6.75 when said dispersion is titrated with 0.4 N hydrochloric acid at a rate of 20 to 50 m?/hr., and wherein said inorganic fine powder has a calcium ion binding property (C.I,) of at least 70 mg./g. as expressed as CaO.

265939

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