| US 7,538,079 B2 | ||
| Spray dried powdered detergents with perfume-containing capsules | ||
| Jonathan Warr, Paris (France); Stuart Fraser, Paris (France); and Emmanuel Aussant, Paris (France) | ||
| Assigned to Takasago International Corporation, Tokyo (Japan) | ||
| Filed on Sep. 22, 2006, as Appl. No. 11/525,048. | ||
| Claims priority of application No. 05291975 (EP), filed on Sep. 23, 2005. | ||
| Prior Publication US 2007/0149423 A1, Jun. 28, 2007 | ||
| Int. Cl. C11D 17/06 (2006.01) | ||
| U.S. Cl. 510—445 [510/438; 510/452; 510/475; 510/101; 510/300; 252/132] | 18 Claims |
| 1. A process for manufacturing a spray dried detergent powder, comprising the steps of:
(a) forming a warm, stirred aqueous slurry comprising inorganic salts, binding agent and 0.001 to 20% by weight of capsules
based on the weight of spray dried powder, said capsules containing at least one benefit agent comprising perfume, and
(b) spray drying the slurry to form said spray dried detergent powder while admixing with said spray dried detergent powder
at least one member selected from the group consisting of a zeolite builder, phosphate builder, carbonate builder and a surfactant
binding agent, wherein
1) more than 40% by weight of the benefit agent remains encapsulated 60 minutes after dispersion thereof at 70° C. in the
slurry in a sealed vessel without agitation; and
2) more than 30% by weight of the benefit agent added for 15 minutes to an ambient slurry survives spray drying through a
laboratory scale spray drier.
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