Encapsulated Aromatic Alcohol Deodorant for Moisture-Triggered Release

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Solution Overview

Problem

Conventional deodorants face challenges in providing prolonged antimicrobial and deodorizing effects, as active ingredients often lose potency quickly, leading to inadequate protection against body odor development, especially when sweat builds up over the day.

Innovation Solution

Development of anhydrous deodorant compositions containing encapsulated aromatic alcohols, specifically 2-benzylheptan-1-ol, with a mixture of sodium starch octenyl succinate, mannitol, and silica, which release the active ingredient only when moisture is present, ensuring effective antimicrobial action when needed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If deodorant active ingredients are applied immediately after cleansing, then initial deodorizing effect is achieved, but the active ingredient loses activity before sweat builds up and body odor develops

Engineering Contradiction:

Improveduration of deodorizing effectVSAvoidreliability of antimicrobial protection

Core Design Contradiction:

Duration of action of moving objectVSReliability

Solution Approach 1:

The deodorant composition is applied in advance during cleansing, but the active ingredient is held in an encapsulated inactive state. The capsule shell prevents premature release, allowing the product to be applied before sweat accumulation while ensuring the antimicrobial agent remains intact until actually needed when perspiration begins.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The invention changes the physical state and release parameters of the active ingredient by encapsulating it. The capsule shell creates a moisture-responsive release mechanism that transforms the delivery timing from immediate release to conditional release based on sweat presence, thereby extending effective duration and maintaining reliability.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If antimicrobial substances are used to prevent body odor, then deodorizing effect is improved, but the active ingredient may affect non-odor-producing skin microflora

Engineering Contradiction:

Improveselectivity of antimicrobial actionVSAvoidimpact on skin microflora balance

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The encapsulation technology enables spatial and temporal differentiation of antimicrobial action. The active ingredient is released locally only where sweat is present, creating different microenvironments: areas with sweat receive antimicrobial protection while areas without sweat maintain their natural microflora balance, thus achieving selectivity without broad-spectrum impact.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The sweat itself triggers the release mechanism through moisture activation. The body's own perspiration serves as the trigger that activates the deodorizing protection precisely where and when it is needed, eliminating the need for the active ingredient to remain continuously present and reducing impact on non-odor-producing areas.

Inventive Principle:

Principle #25Self-service

3Duration of action of moving object

If deodorant is applied to ensure protection throughout the day, then initial deodorizing effect is achieved, but by evening there is insufficient active ingredient remaining to prevent body odor

Engineering Contradiction:

Improveduration of antimicrobial protectionVSAvoidamount of active ingredient remaining

Core Design Contradiction:

Duration of action of moving objectVSQuantity of substance

Solution Approach 1:

Instead of relying on continuous presence of the active ingredient, the invention implements periodic on-demand release triggered by sweat events throughout the day. Each perspiration episode activates a new release cycle, effectively renewing the antimicrobial protection periodically rather than depleting a fixed initial dose, thereby extending effective duration without requiring large initial quantities.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The encapsulated formulation ensures continuous availability of the active ingredient in a protected state throughout the day. The moisture-responsive release mechanism maintains the potential for action continuously, activating protection whenever sweat occurs, thus providing uninterrupted deodorizing coverage from morning application through evening without depletion.

Inventive Principle:

Principle #20Continuity of useful action

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 encapsulated deodorant composition provides a prolonged and 'on-demand' deodorizing effect, maintaining antimicrobial protection throughout the day without immediate release on dry skin, thus effectively preventing body odor.

Implementation Method 1

Under the influence of moisture, the water-soluble capsule material opens a certain time after application and the previously encapsulated deodorizing active ingredient is released

Methodology Applied

Scientific EffectHygroscopy: Absorption (physical)

Data Source

PatentEP2349185B1More effective anhydrous deodorant compositions applied as an aerosol

Publication Date: 2018.01.24 HENKEL KGAA

AI summary

The invention relates to more effective anhydrous deodorant compositions which are applied as a spray and contain encapsulated aromatic alcohols.