Patent ID: 6147046
Filing Date: 2000-11-14
Classification: C11D

Abstract:
A fragrance-containing and controllably fragrance releasing solid particle produced according to the process comprising the steps of:(a) selecting a fat component selected from the group consisting of partially hydrogenated soybean oil, partially hydrogenated cotton seed oil, partially hydrogenated palm oil, and mixtures thereof;(b) heating the fat component(s) whereby a first melt is formed;(c) selecting a solid surface active agent which is a surfactant of HLB of from about 1 up to 3, defined as a mixture of components having the structures: ##STR15## wherein R is C11-C17 alkyl or alkenyl; (d) heating the surface active agent whereby a second melt is formed;(e) pre-selecting and blending at least ten fragrance components selected from the group consisting of aroma chemicals and essential oils according to an algorithm illustrated by a graph in the X-Y plane where the calculated log.sub.10 P (measured along the Y axis) for each given fragrance component .PHI..sub.i is a function of:(i) the cumulative weight percentage of all fragrance components, .SIGMA.(wt. %) (measured on the X axis) having a log.sub.10 P less than or equal to that of the given fragrance component .PHI..sub.i ;(ii) the tangent slopes to the graph of log.sub.10 P vs. .SIGMA.(wt. %) illustrating the algorithm; and(iii) the y intercept of the graph of the log.sub.10 P vs. .SIGMA.(wt. %) to form a fragrance component blend;(f) combining the first melt, the second melt and the pre-selected fragrance component blend to form a fragrance-melt blend;(g) cooling the resulting fragrance-melt blend by means of drum chilling to form solid phase flakes; and(h) forming solid particles by means of cryogenically grinding the resulting solid phase flakes, wherein said particles have an effective diameter of from about 0.3 up to about 0.8 microns, and each of said particles contains from about 1.0 up to about 20.0% by weight of said fragrance formulatio, from about 40 up to about 99% by weight of sait fat component and from about 1 up to about 60% by weight of said surfactant.