Cinnamyl Ether Pro-Fragrances for Week-Long Odor Release

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Solution Overview

Problem

The perfumery industry seeks compounds that can release fragrant alcohols and aldehydes over a prolonged period, particularly upon exposure to ambient oxygen, to control the timing and duration of fragrance release effectively.

Innovation Solution

The use of cinnamyl ether compounds as precursors, which are oxidized to release fragrant alcohols and aldehydes, allowing for controlled and sustained fragrance delivery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If conventional pro-fragrance compounds are used, then fragrance release can be achieved, but the release duration is short and cannot be controlled to last over a week

Engineering Contradiction:

Improvefragrance release durationVSAvoidcontrolled release timing

Core Design Contradiction:

Duration of action of moving objectVSReliability

Solution Approach 1:

The patent modifies the molecular structure of pro-fragrance compounds by introducing specific substituents (R1, R2 groups) and adjusting the chemical composition to enable prolonged oxidation and fragrance release over more than a week, transforming the temporal characteristics of fragrance delivery

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs oxidizable pro-fragrance compounds as intermediary substances that slowly transform into fragrant alcohols and aldehydes through oxidation, serving as a controlled release mechanism that extends fragrance duration while maintaining reliability through structured chemical transformation

Inventive Principle:

Principle #24Intermediary (Mediator)

2Speed

If fragrant compounds are released quickly, then immediate odor effect is achieved, but the release period is too short for prolonged fragrance delivery

Engineering Contradiction:

Improvefragrance release rateVSAvoidfragrance release duration

Core Design Contradiction:

SpeedVSDuration of action of moving object

Solution Approach 1:

The patent creates a periodic or sustained release pattern where the pro-fragrance compound undergoes gradual oxidation over time, releasing fragrant compounds in a controlled sequence rather than a single burst, thereby extending the duration while maintaining an acceptable release rate

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent uses pro-fragrance compounds that are pre-prepared in an oxidizable form, where the fragrance-releasing functional groups are already in place but require time to oxidize, enabling delayed but sustained fragrance release that balances speed and duration

Inventive Principle:

Principle #10Preliminary action

3Loss of time

If oxidizable pro-fragrances are used to control release timing, then fragrance release can be delayed, but significant discoloration of treated surfaces occurs

Engineering Contradiction:

Improvefragrance release timing controlVSAvoidsurface discoloration

Core Design Contradiction:

Loss of timeVSObject-affected harmful factors

Solution Approach 1:

The patent introduces specific local structural features (aromatic rings with ortho-substituted hydroxyl groups, specific R1 and R2 substituents) that enable oxidation at controlled locations within the molecule, allowing delayed fragrance release while minimizing harmful oxidation effects on the treated surface

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent converts the potentially harmful oxidation process into a beneficial controlled release mechanism by designing pro-fragrance compounds where oxidation is necessary for fragrance release but is confined to specific molecular regions, thereby delaying release timing while preventing widespread surface discoloration

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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 cinnamyl ether compounds provide a prolonged and controlled release of fragrances, maintaining odor intensity for over a week, even after exposure to ambient conditions, without causing significant discoloration of the treated surfaces.

Implementation Method 1

the cinnamyl ether compounds are oxidized to release fragrant alcohols and aldehydes

Methodology Applied

Scientific EffectOxidation: Oxidation

Data Source

PatentUSRE50800E1Pro-fragrance compounds

Publication Date: 2026.02.17 FIRMENICH SA

AI summary

Precursor or pro-fragrance compounds used as a precursor to deliver at least one fragrant compound that is capable of imparting an odor, in particular one which imparts an odor to a material, more particularly to a fabric or textile. The pro-fragrant compounds of the invention include fragrant alcohols (R1OH) released from a compound of Formula Ior in which Formula I is derived from (R1OH) and encompass any fragrant alcohol having more than three carbon atoms. Also, methods of generating the fragrant compounds and to improve, enhance or modify odoriferous properties of a perfuming composition or a perfumed article are also disclosed, as are the resultant perfuming compositions and articles.