| 摘要 |
The invention relates to combinations of 1-aza-3,7-dioxabicyclo[3.3.0]octane compounds with silicic acid esters, methods for producing same, the use of same as pro-fragrances, as well as washing and cleaning agents, fabric softeners and cosmetics that contain same. The invention also relates to a method for prolonging the perception of fragrance in such agents. |
| 主权项 |
1. A composition for providing the delayed release of scent comprising:
(a) a 1-aza-3,7-dioxabicyclo[3.3.0]octane compound of the general formula (I) whereinR1, R2, R3, R4 mutually independently denote residues that, in a compound of the general formula R1—C(═O)—R2 or R3—C(═O)—R4, yield a scent aldehyde having at least six carbon atoms or a scent ketone having at least six carbon atoms,R5, R6, R7 mutually independently denote H or a hydrocarbon residue that can be acyclic or cyclic, substituted or unsubstituted, branched or unbranched as well as saturated or unsaturated,or mixtures of said compounds, and (b) a silicic acid ester of the general formula (II) whereinn assumes values in the range from 2 to 100, andall R are selected mutually independently from the group of hydrogen, straight-chain or branched, saturated or unsaturated, substituted or unsubstituted C1-6 hydrocarbon residues and scent alcohol residues, with the provision that at least one R denotes a scent alcohol residue,or mixtures of said compounds. |
