Patent ID: 6858574
Filing Date: 2005-02-22
Classification: A61K,A61Q

Abstract:
1. A process for selecting a composition yielding a maximum fragrance burst of one or more of the fragrance components of at least 20%, when it is diluted, wherein said composition is defined by perfume burst index PBI: wherein Ø=oil/water partition coefficient of a selected perfume or perfume components in a mixture; CMC=critical micellization concentration (wt./wt.) of selected surfactant systems or mixture of surfactant systems in diluent or continuous phase; K=volatility constant of selected perfume from said continuous phase or diluent (atmospheres); wherein said process comprises selecting a first perfume or at least one component of a first perfume mixture and selecting a first surfactant system or mixture of surfactant systems such that the above-noted variables are calculated to provide a PBI that is greater than about 3; wherein by maximum fragrance burst of at least 20% is meant that the perfume concentration in the headspace above said fragrance or fragrance components increases at least 20%, when it is diluted, relative to the perfume concentration in the headspace of a second composition, differing in perfume properties, surfactant concentration and/or CMC of a surfactant system with a PBI less than that of the first composition, both compositions measured as the compositions comprising said fragrance or fragrance components are diluted below the critical micelle concentration (CMC) of the fragrance, surfactant and water system.