Delayed release of a fragrance from novel ionic liquids

Abstract

We present a new technology based on delayed release of perfume raw materials from new-to-the-world binary ionic liquid mixtures.

Modeling the Vapor–Liquid Equilibria of Ionic Liquids Containing Perfume Raw Materials

“…pi nene As previously reported, positive or negative deviations from ideality are controlled by the specific interactions between the solutes and the solvent. [6][7] As ionic liquids have negligible vapour pressure at room temperature, they have no partial vapour pressure (i.e. IL 0 = 0 in Equation 2).…”

“…The nature and the strength of the interaction between the PRM and the bistriflamide ionic liquid illustrate, as proof of principle, that repulsion of the solute by the ionic liquid result in positive deviation from Raoult's law. 5 Having considered a fragrance release technology based on the design of the cation, 7 here a similar approach is reported for the anion with an extension in terms of theoretical modelling of the system. In particular, an L-Prolinate anion was introduced in order to see the effect of the anion structure on the vapour pressure of the PRMs.…”

“…This effect has been reported elsewhere for multi-etherated alkylammonium ionic liquids. 7 Nicotinate and acesulfamate tend to follow an ideal Raoult's law trend, bis{(trifluoromethyl)sulfonyl}amide and hexafluorophosphate tend to repel the 2-phenylethanol.…”

“…As previously reported, positive or negative deviations from ideality are controlled by the specific interactions between the solutes and the solvent. 6,7 As ionic liquids have negligible vapor pressure at room temperature, they have no partial vapor pressure (i.e., p IL 0 = 0 in eq 2). The cations and anions were selected to provide insight into the driving forces of the interactions between anion, cation, and PRMs with different functionalities.…”

“…[4][5] A similar approach has been applied for studying LLE, and a wide variety of cases have been studied. [6][7] As thousands of potential perfume raw materials are known, 8 it is infeasible to study experimentally even a fraction of these in the necessary detail that is required to determine their VLE and LLE properties. In order to garner the necessary information to enable an informed decision to be made for the selection of PRMs for a specific task, it is desirable to develop a computational screening process.…”