Process for reducing friability of detergent powders

Details Process for reducing friability of detergent powders Process for reducing friability of detergent powders

1980-06-13

1982-02-09

Hall, James R.

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

By extrusion spraying or gravity fall through orifice

B01J 202

Patent

active

043149537

ABSTRACT:
The friability of spray-dried detergent powder containing a relatively high level of anionic surfactant and a relatively low level of inorganic material is reduced by the use of hydrated starch. The preferred amount of hydrated starch is from 1 to 5% and the invention is particularly applicable to powders containing 5% or more of sodium silicate, 20-30% by weight of detergent active compound and an amount of phosphate builder compound of less than about 7% by weight of the spray-dried powder, calculated as phosphorus.

REFERENCES:
patent: 3347798 (1967-10-01), Baer et al.
patent: 3803285 (1974-04-01), Jensen

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