Method of making coated granular bleach activators by spray dryi

Details Method of making coated granular bleach activators by spray dryi Method of making coated granular bleach activators by spray dryi

1982-07-07

1984-07-03

Padgett, Benjamin R.

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

252 99, 252102, 25218638, C09K 300

Patent

active

044578580

ABSTRACT:
Coated granular bleach activators and a process for their preparation comprising spray drying an aqueous slurry containing 1 to 1.7 parts by weight of water per part of a mixtue of (A) a powdery bleach activator and (B) at least one water soluble cellulose ether, starch, or starch ether in a ratio of A:B of from 99:1 to 90:10. The process utilizes a current of a drying gas having an entrance temperature of 100.degree.-200.degree. C. and an exit temperature of 40.degree.-120.degree. C.

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