Sweaty, smelly socks and mildewy, damp laundry could become long forgotten with pro-scent solutions such as this invention.
1-Aza-3,7-dioxabicyclo[3.3.0]octane compounds and silicic acid esters as pro-scents
U.S. Patent 9321986
Publication date: April 26, 2016
Assignee: Henkel AG & Co. KGaA
Washing and cleaning agents, fabric softeners and cosmetics often are enhanced with the addition of scents or pro-scents. And like pro-drugs, pro-scents are chemical derivatives of scents that, for example, decrease the volatility of a scent to permit its time-delayed release under ambient conditions.
According to these inventors, by derivatizing scents such as aldehydes, ketones or scent alcohols, it is possible to lower the vapor pressure of these compounds.
The object of this invention was therefore to improve scent precursor forms, so-called pro-scents, that can sustainably cover bad odors even over a period of several days. Combinations of 1-aza-3,7-dioxabicyclo[3.3.0]octane compounds with silicic acid esters were found to achieve this objective.
Patent accessed May 13, 2016.