Patent ID: 8158135

Claim:
A method for releasing in a controlled manner, into the surrounding space, a C 5 -C 30 volatile perfuming ingredient which method comprises the application of a variable electric field to a delivery system comprising: 1) at least one imine capable of forming a liquid crystalline phase and being of formula wherein R 1 and R 2 represent independently of each other a C 1 -C 18 linear, branched or cyclic alkyl, alkenyl or alkoxy chain or a substituent selected from the group consisting of CN, OCOX, OCOC 6 H 5 X, C 6 H 5 X, COX, COOH, H, Cl, Br, I, NO 2 , OH, CF 3 , and N(CH 3 ) 2 , wherein X is CF 3 or a C 1 -C 18 linear or branched alkyl or alkenyl chain; and R 3 is H or a linear or branched C 1 -C 8 alkyl or alkenyl chain; n and m are 0 or 1, and with the proviso that n=m=1 is excluded; and Q is selected from the group consisting of formulae i) to v), in which formulae if n=1 the dotted lines of formula i) to v) indicate the connection to R1 and the bold lines the connection to the aromatic ring of formula (I), if m=1 the dotted lines indicate the connection to the aromatic ring and the bold lines the connection to R 2 ; R 4 , R 5 and R 6 are, independently from each other, selected from the group consisting of H, Cl, OH, OCH 3 , CH 3 , CN, NO 2 , N(CH 3 ) 2 ; or R 1 and R 4 , and/or R 2 and R 5 , and/or R 1 and R 6 , and/or R 2 and R 6 taken together, respectively, form a 5 or 6 membered ring containing 2 oxygen atoms; and with the proviso that at least one of the groups of R 1 or R 2 represents a C 1 -C 18 linear or branched alkyl, alkenyl or alkoxy chain; and 2) at least one C 5 -C 30 volatile perfuming ingredient.