New fragrance compositions and air care devices
Publication Date: 2015-Feb-03
The IP.com Prior Art Database
A new fragrance composition comprising a fragrance compound and a solvent or carrier, wherein at least 10% by weight based on the total weight of solvent and carrier of the fragrance composition is one or more specific low vapor pressure volatile organic compound (VOC). The new fragrance composition is particularly well adapted to air care devices like wicking or electrical systems (plug-in, reed diffusers…).
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New Fragrance compositions and air care devices
A new fragrance composition comprising a fragrance compound and a solvent or carrier, wherein at least 10% by weight based on the total weight of solvent and carrier of the fragrance composition is one or more specific low vapor pressure volatile organic compound (VOC). The new fragrance composition is
A problem in the area of air care devices is the uncontrolled "distillation" of fragrance components of differing volatilities, resulting in a variable fragrance profile over time, as perceived by the consumer. The use of carriers or solvents in fragrances aids in the uniform distribution or evaporation of these fragrance components and leads to a more homogeneous fragrance profile.
Many materials are used as carriers in air care devices including glycol ethers, isoparaffinic solvents (e.g., Isopar® solvents commercially available from ExxonMobil) and various branched esters. One problem associated with these materials is that many are classified as VOCs (volatile organic compounds). VOC's are increasingly of environmental and regulatory concern. There is one class of VOCs, low vapor pressure VOC's (LVP‐VOCs), which are not as harmful to the atmosphere and are generally allowed
some devices, like reed diffusers, the odor of the solvent could be an issue since this can compete with the fragrance. Concerning the very low evaporation rate of Dowanol, it is also an issue in reed diffusers since the weight loss of the fragrance composition must be between 2.0‐3.0g/day to have a good spread in the environment.
Alkyl‐4‐hydroxymethyl‐1,3‐dioxolane molecules are known to be used in many different applications like
particularly well adapted to air care devices like wicking or electrical systems (plug‐in, reed diffusers…).
A new fragrance composition containing low vapor pressure VOCs, as solvents and/or carriers, notably for use in air care devices.
under even the most stringent environmental regulations. This class of VOC has lower vapor pressure than regular VOCs as defined by standard definitions (e.g., <0.1 mm Hg at 20° C.).
The use of Dowanol DPMA (dipropylene glycol methyl ether acetate) has low vapor pressure VOC in fragrance composition is known from US 8603963. However, it presents a very low evaporation rate (1.5, n‐butyl acetate = 100), it comes from petrochemical source and also presents a non‐pleasure odor. In