Antiperspirant Fragrance Delivery via Segmented Boiling Points

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing antiperspirant and deodorant compositions fail to provide a consistent and prolonged fragrance release, especially in high-boiling point components, and do not effectively respond to sweat events and body movements, leading to inadequate odor control and fragrance intensity over time.

Innovation Solution

A composition combining a non-encapsulated fragrance rich in high-boiling point components (>250°C) with an encapsulated fragrance lean in these components, using shear-sensitive, water-insoluble microcapsules that release fragrance upon physical contact or movement, ensuring prolonged fragrance delivery and enhanced odor control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If a fragrance rich in high-boiling point components is used, then prolonged fragrance release is achieved, but initial fragrance intensity is reduced

Engineering Contradiction:

Improvefragrance release durationVSAvoidfragrance intensity

Core Design Contradiction:

Duration of action of moving objectVSIllumination intensity

Solution Approach 1:

The fragrance is divided into two segments: an encapsulated portion rich in low-boiling point components for initial intensity, and a non-encapsulated portion rich in high-boiling point components for prolonged release. This segmentation allows each fragment to serve its specific function optimally.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention changes the physical state parameter of the fragrance components by encapsulating some in microcapsules while leaving others free. This parameter change enables different release kinetics - the encapsulated portion releases quickly upon application while the non-encapsulated portion provides sustained release over time.

Inventive Principle:

Principle #35Parameter changes

2Duration of action of moving object

If encapsulated fragrance is used, then fragrance release is controlled and prolonged, but response to sweat events and body movements is reduced

Engineering Contradiction:

Improvefragrance release durationVSAvoidresponse to sweat and movement

Core Design Contradiction:

Duration of action of moving objectVSAdaptability or versatility

Solution Approach 1:

The invention creates a dynamic fragrance release system where the non-encapsulated portion responds dynamically to sweat events and body movements, while the encapsulated portion provides controlled prolonged release. This dynamic combination allows the fragrance to adapt to different physiological conditions.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention merges two fragrance delivery mechanisms - encapsulated and non-encapsulated - into a single composition. The encapsulated fragrance provides controlled release while the non-encapsulated fragrance provides immediate response to environmental triggers, creating a synergistic effect.

Inventive Principle:

Principle #5Merging (Combining)

3Duration of action of moving object

If non-encapsulated fragrance rich in high-boiling point components is used, then prolonged fragrance perception is achieved, but initial burst release is insufficient

Engineering Contradiction:

Improvefragrance perception durationVSAvoidinitial fragrance release speed

Core Design Contradiction:

Duration of action of moving objectVSSpeed

Solution Approach 1:

The fragrance composition is segmented into encapsulated and non-encapsulated portions, each with different boiling point component profiles. The encapsulated portion contains low-boiling point components for rapid initial release, while the non-encapsulated portion contains high-boiling point components for prolonged perception.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention changes the physical state and composition parameters of the fragrance by selectively encapsulating certain components while leaving others free. This creates a dual-phase release system that addresses both the need for initial burst and prolonged perception.

Inventive Principle:

Principle #35Parameter changes

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 composition achieves a consistent fragrance perception over extended periods, providing a fragrance boost during exercise and improved odor control, maintaining intensity and effectiveness for several hours after application.

Implementation Method 1

a water-insoluble shear-sensitive encapsulating material

Methodology Applied

Scientific EffectShear stress: Shear Stress

Implementation Method 2

being rich in fragrance components having a boiling point of higher than 250°C at 1 bar pressure

Methodology Applied

Scientific EffectEvaporation: Evaporation

Data Source

PatentEP2461788B1Fragrance-containing compositions

Publication Date: 2016.05.04 UNILEVER PLC

AI summary

An antiperspirant or deodorant composition comprising i) an antiperspirant or deodorant active, ii) a liquid carrier for the antiperspirant or deodorant active, and iii) fragrance in which the fragrance comprises a mixture of first and second fragrances, respectively (iiia) and (iiib), the first fragrance (iiia) being free from encapsulation and comprising fragrance components having a boiling point of higher than 250°C at 1 bar pressure in a weight proportion of greater than 65% and the second fragrance (iiib) being encapsulated in a water-insoluble shear- sensitive encapsulating material and comprising fragrance components having a boiling point of greater than 250°C at 1 bar pressure in a weight proportion of less than 65%.