Process for preparing perfumed detergent products
AssigneeUnilever Patent Holdings B.V.
InventorsJohn M. Behan, Jeremy N. Ness, Keith D. Perring, William M. Smith
Life of this patent
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Abstract
The invention concerns a process for incorporating a perfume into a detergent product, wherein the perfume is first combined with one or more non-ionic emulsifiers and an aqueous phase to form a structured emulsion containing liquid crystal structures, which surround the dispersed perfume, and thereafter this structured emulsion is dispersed into a detergent composition. The invention also concerns the detergent products thus obtained. The structured emulsion comprises 1-30% by weight of non-ionic emulsifiers, 1-50% by weight of a perfume and 20-98% by weight of an aqueous phase. The detergent product comprises at least 4% by weight of surfactant.
Claims16
A process for incorporating a perfume into a detergent product comprising the steps of:
- combining a dispersed perfume with one or more non-ionic emulsifiers at a temperature sufficient to form a homogeneous non-aqueous liquid phase;
- heating an aqueous phase, consisting essentially of water, to a temperature substantially the same as the non-aqueous liquid phase;
- mixing the aqueous phase and non-aqueous phase under shear conditions such that an emulsion containing liquid crystal structures, which surround the dispersed perfume is formed;
- dispersing the structured emulsion into a detergent composition.
Dependencies are inferred from the claim text.