Hand Dishwashing Composition with Cyclic Polyamine

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Solution Overview

Problem

Existing hand dishwashing compositions face challenges in maintaining a consistent and long-lasting suds profile, particularly in terms of volume and whiteness, while also effectively cleaning grease and preventing its re-deposition, especially under varying dilution conditions and consumer washing habits.

Innovation Solution

A hand dishwashing cleaning composition comprising a surfactant system with a highly branched anionic surfactant and a specific cyclic polyamine, which enhances suds stabilization, consistency, and whiteness, along with improved grease cleaning and emulsification capabilities, allowing for sustained performance across different washing conditions and habits.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If conventional surfactant systems are used in hand dishwashing compositions, then basic cleaning function is provided, but suds volume, consistency, and whiteness deteriorate during the washing process

Engineering Contradiction:

Improvesuds profile stabilityVSAvoidsuds volume

Core Design Contradiction:

Stability of the object's compositionVSQuantity of substance

Solution Approach 1:

The patent changes the chemical parameters of the surfactant system by introducing a specific cyclic polyamine (Formula I) with defined structural characteristics (n=1-3, specific R groups) and combining it with anionic surfactants in optimized ratios. This parameter change transforms the surfactant system's ability to stabilize suds, maintaining suds volume, consistency, and whiteness throughout the washing process without the typical deterioration seen in conventional systems.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite surfactant system combining cyclic polyamine (a new component) with anionic surfactants. This composite material approach synergistically enhances suds stabilization properties, where the cyclic polyamine complements the anionic surfactant's cleaning ability while specifically addressing suds profile stability, consistency, and whiteness retention during washing.

Inventive Principle:

Principle #40Composite materials

2Reliability

If dishwashing detergent is designed for strong grease cleaning, then cleaning performance is improved, but re-dosing frequency increases due to suds profile degradation

Engineering Contradiction:

Improvecleaning performanceVSAvoidre-dosing frequency

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The cyclic polyamine-containing surfactant system maintains continuous effective action throughout the washing process by preventing suds profile degradation. The system sustains cleaning performance, suds volume, and suds whiteness from start to finish of the wash cycle, eliminating the typical mid-cycle performance drop that would trigger re-dosing, thereby enabling continuous useful action without interruption.

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The surfactant system performs self-service by automatically maintaining its own effectiveness throughout the washing process. The cyclic polyamine-anionic surfactant combination self-regulates to prevent suds collapse and maintain cleaning activity, reducing the need for external intervention (re-dosing) to restore performance during the wash cycle.

Inventive Principle:

Principle #25Self-service

3Adaptability or versatility

If dishwashing composition is formulated for sink full of water washing, then washing capacity is increased, but performance under running water conditions deteriorates

Engineering Contradiction:

Improvewashing condition adaptabilityVSAvoidcleaning consistency

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The surfactant system with cyclic polyamine achieves universality by delivering consistent cleaning performance across multiple washing scenarios. The formulation maintains effective suds stabilization and grease cleaning whether used in sink-full-water conditions or under running water, making it adaptable to different consumer washing habits without sacrificing reliability in any specific condition.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 long-lasting, dense, and white suds, enhanced grease removal, and reduced grease re-deposition, providing improved cleaning performance and consumer satisfaction while minimizing re-dosing frequency and environmental impact.

Implementation Method 1

a surfactant system comprising a highly branched anionic surfactant and a specific cyclic polyamine

Methodology Applied

Scientific EffectSurface tension reduction: Surface Tension

Implementation Method 2

enhanced suds stabilization, enhanced suds consistency and enhanced suds whiteness

Methodology Applied

Scientific EffectFoam formation and stabilization: Foam

Implementation Method 3

enhanced grease emulsification under a wide range of dilutions

Methodology Applied

Scientific EffectEmulsification: Emulsion

Data Source

PatentUS11072763B2Cleaning composition

Publication Date: 2021.07.27 PROCTER & GAMBLE CO

AI summary

The present invention relates to a hand dishwashing cleaning composition. In particular, the composition includes a surfactant system, the surfactant system includes an anionic surfactant having a weight average degree of alkyl branching between 41% and 50% and a primary co-surfactant selected from the group consisting of amphoteric surfactant, zwitterionic surfactant and mixtures thereof, and wherein the composition further includes a specific cyclic polyamine.