Hand Dishwashing Composition with Amine for Grease Removal

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Solution Overview

Problem

Hand dishwashing compositions face challenges in effectively removing polymerized grease and maintaining stable suds, especially under direct application conditions and in the presence of acidifying soils, which can lower the pH and impact foaming performance.

Innovation Solution

A hand dishwashing cleaning composition comprising a surfactant system and specific amines such as N-methyl amino propane diol, N,N-dimethyl amino propane 1,2-diol, and N-hydroxyethylglucamine, combined with anionic, amphoteric, and non-ionic surfactants, along with a divalent cation like magnesium, to enhance grease removal and stabilize suds across varying pH levels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional soaking and mechanical rubbing methods are used to remove polymerized grease, then cleaning effectiveness is improved, but manual effort increases and dishware safety may be compromised

Engineering Contradiction:

Improvecleaning effectivenessVSAvoidmanual effort

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces mechanical rubbing action with chemical action by incorporating specific surfactant systems and amines that can chemically interact with and emulsify polymerized grease, allowing removal through gentle wiping rather than vigorous rubbing

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent modifies the chemical parameters of the cleaning composition by adjusting pH levels and incorporating specific amines to enhance the ability to break down polymerized grease at lower mechanical energy input

Inventive Principle:

Principle #35Parameter changes

2Reliability

If acidifying soils are present during dishwashing, then cleaning of fatty soils is achieved, but suds stability deteriorates due to pH lowering

Engineering Contradiction:

Improvecleaning performanceVSAvoidsuds stability

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent introduces specific amines as intermediary substances that buffer the pH changes caused by acidifying soils, maintaining an optimal pH range for suds stability while still allowing effective cleaning of fatty soils

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent adjusts and controls the pH parameter of the cleaning composition through amine addition, creating a buffer system that maintains stable suds formation even in the presence of acidifying soils

Inventive Principle:

Principle #35Parameter changes

3Quantity of substance

If direct application method is used instead of sink washing, then water efficiency is improved, but cleaning performance on polymerized grease may be compromised

Engineering Contradiction:

Improvewater consumptionVSAvoidcleaning performance

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

The patent optimizes the concentration and formulation parameters of the cleaning composition specifically for direct application, adjusting surfactant ratios and amine concentrations to ensure effective polymerized grease removal in the reduced water environment of direct application

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite cleaning system combining multiple surfactants and amines that work synergistically to enhance cleaning performance on polymerized grease under direct application conditions with minimal water

Inventive Principle:

Principle #40Composite materials

4Ease of operation

If foam generation is prioritized as an indicator of cleaning performance, then user satisfaction is improved, but actual cleaning effectiveness may be reduced due to excessive detergent dosing

Engineering Contradiction:

Improveuser satisfactionVSAvoidcleaning effectiveness

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent optimizes the foam generation parameters of the cleaning composition to provide adequate but not excessive foam, adjusting surfactant concentrations to achieve a balance between user-perceived performance and actual cleaning effectiveness

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 excellent removal of polymerized grease and long-lasting suds even in acidic conditions, reducing the need for frequent detergent dosing and improving the overall cleaning performance and user satisfaction.

Implementation Method 1

the compounds providing reduced dynamic and equilibrium surface tension

Methodology Applied

Scientific EffectSurface tension reduction: Surface Tension

Implementation Method 2

a surfactant system comprising an anionic surfactant and a co-surfactant selected from the group consisting of amphoteric surfactant, zwitteronic surfactant and mixtures thereof

Methodology Applied

Scientific EffectMicelle formation: Surfactant

Data Source

PatentEP3284810B1Cleaning composition

Publication Date: 2022.07.27 PROCTER & GAMBLE CO

AI summary

A hand dishwashing cleaning composition comprising a surfactant system and an amine of Formula (I): R1-N-R2R3 (I) wherein: R1 is an acyclic or cyclic polyhydroxyhydrocarbyl; and R2 and R3 are independently selected from: i) hydrogen, wherein R2 and R3 are not both hydrogen; ii) substituted or unsubstituted C1 to C3 hydrocarbyl; and iii) acyclic or cyclic polyhydroxyhydrocarbyl as defined for R1.