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Patent Pick: Not So Fast, Fragrance

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Dear fragrance, What's the big rush? You're quick to drift into the ether, leaving barely a trace of you behind. We'd love for you to stick around, as this patent from Firmenich suggests you could. Consider this traditional cosmetic emollient.

Perfuming composition to prolong release
U.S. Patent 9296978
Publication date: March 29, 2016
Assignee: Firmenich SA

This patent describes a composition capable of prolonging the release of perfume from products applied to the skin or hair. When used with high amounts of ethanol, neopentyl glycol diethylhexanoate reduces fragrance evaporation, extending its duration.

Previous inventions disclose the use of fixatives for similar effects; however, this invention provides a different and selective approach in that neopentyl glycol diethylhexanoate is used with defined amounts of perfume ingredients having specific vapor pressures. Further, the present technology does not affect the stability of the fragrance even after two months of storage at 45°C.

According to the inventors, neopentyl glycol diethylhexanoate is a known cosmetic emollient, recommended for light moisturizing creams, lotions, toners, etc. Here, for the first time, they suggest its use in retarding the evaporation of perfume ingredients. This brings a novel solution to challenge of prolonging fragrances.

Patent accessed April 4, 2016.

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