Perfume precursor
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Solution Overview
Problem
Conventional fragrance compositions and deodorants face challenges in providing long-lasting scent longevity and effective deodorization, as they often result in uneven scent release, volatility issues, and potential skin flora imbalance due to antimicrobial use, leading to unpleasant sensations and inadequate malodor control.
Innovation Solution
A fragrance precursor that releases a phenol or phenol derivative through the action of a hydrolase or microorganism, such as Staphylococcus aureus, to enhance scent longevity and deodorization timing, while maintaining skin health by using specific compounds like geranyl benzoate and citronellyl phenylacetate in products like deodorants and laundry care items.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If conventional compounded fragrances or fragrance capsules are used to enhance scent longevity, then the scent may last longer, but the fragrance components are washed away into water during cleaning or require physical breaking of the capsule to release scent, resulting in mismatch between scent emission timing and need
Solution Approach 1:
The fragrance is converted into a precursor form (e.g., acetal, hemiacetal, orthoester, or carbamate derivative) before application. This precursor is stable during cleaning and storage, then converts to the active fragrance form under specific conditions (water contact, humidity, or microbial action), ensuring scent release occurs precisely when needed without premature emission or washing away
Solution Approach 2:
The invention changes the chemical state of the fragrance from its original form to a modified precursor form with different stability and reactivity parameters. This allows the fragrance to maintain stability during cleaning (resisting washing away) while enabling controlled activation later through hydrolysis or microbial degradation, achieving both longevity and timing control
2Duration of action of moving object
If fragrance components with extremely low volatility are used to enhance lingering scent, then the scent may last longer, but the palatability deteriorates and unpleasant sensation is caused
Solution Approach 1:
The desirable fragrance components are prepared in advance as stable precursors that do not挥发 (volatilize) prematurely. These precursors maintain freshness and palatability during storage and cleaning, then convert to the active aromatic forms only when triggered by water, humidity, or microbial action, ensuring pleasant scent release at the appropriate time without the unpleasant effects of premature low-volatility component exposure
3Object-generated harmful factors
If antimicrobial agents are used to deodorize malodors caused by microorganisms, then the deodorizing effect is enhanced, but skin-resident bacteria are killed along with malodor-causing bacteria, disrupting skin flora balance
Solution Approach 1:
Instead of using antimicrobial agents that kill both harmful and beneficial bacteria, the invention utilizes the natural metabolic activity of skin microorganisms to convert the applied fragrance precursors into active aromatic compounds. This approach leverages microbial presence (rather than eliminating it) to generate pleasant scents while simultaneously degrading malodors, thereby maintaining skin flora balance while achieving effective deodorization
Solution Approach 2:
The fragrance precursor acts as an intermediary substance that mediates between the application and the final scent release. It remains stable during application and cleaning, then serves as a substrate for microbial transformation into active fragrance components. This intermediary approach enables deodorization through microbial metabolism rather than direct antimicrobial action, preserving skin health
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The fragrance precursor ensures continuous fresh scent emission and effective deodorization synchronized with microorganism proliferation, improving scent longevity and skin health by using specific compounds like geranyl benzoate and citronellyl phenylacetate in products like deodorants and laundry care items.
Implementation Method 1
a fragrance precursor which releases a fragrance alcohol, a phenol or a phenol derivative by the action of a hydrolase or microorganism
Data Source
AI summary
A fragrance precursor represented by formula (1):wherein R1 represents a hydrogen atom, an alkyl group having a carbon number of 1 to 12, a hydroxy group, a methoxy group or an ethoxy group R2 represents a single bond, an alkylene group having a carbon number of 1 to 2, which may have a substituent, or a vinylene group which may have a substituent; and R3 represents a residue resulting from removal of one hydrogen atom of a hydroxy group from a fragrance alcohol having a carbon number of 5 to 20 or a phenol which may have a substituent.