Hard Surface Cleaning Composition with Polymer Complex and Low Essential Oil

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Solution Overview

Problem

Current hard surface cleaning compositions with anti-microbial properties often rely on high concentrations of essential oils, which are expensive and can cause unpleasant odors, while also providing short-lived hygiene benefits against both gram-positive and gram-negative bacteria.

Innovation Solution

A hard surface cleaning composition comprising a polymer complex of carboxylic acid homopolymers or copolymers and alkylene oxide, vinyl pyrrolidone, or vinyl alcohol homopolymers or copolymers, combined with a low amount of essential oils and a quaternary ammonium biocide, maintaining a pH between 2 and 6, to achieve long-lasting anti-microbial effects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If high concentrations of essential oils are used for anti-microbial effect, then anti-microbial activity is improved, but cost and unpleasant odor increase

Engineering Contradiction:
Improveanti-microbial activityVSAvoidunpleasant odor
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent changes the concentration parameter of essential oils from high to low levels, and compensates for the reduced anti-microbial activity by introducing quaternary ammonium biocide and optimizing the polymer complex formulation, thereby maintaining effectiveness while reducing unpleasant odor

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite anti-microbial system combining essential oils with quaternary ammonium biocide and polymer complex, where the components work synergistically to provide effective anti-microbial activity at lower essential oil concentrations, thus reducing unpleasant odor

Inventive Principle:
Principle #40Composite materials

2Reliability

If high concentrations of essential oils are used for anti-microbial effect, then anti-microbial activity is improved, but cost increases

Engineering Contradiction:
Improveanti-microbial activityVSAvoidcost
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent reduces the concentration parameter of expensive essential oils while maintaining anti-microbial effectiveness through the synergistic combination with quaternary ammonium biocide and polymer complex, thereby reducing overall formulation cost

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent introduces quaternary ammonium biocide and polymer complex as intermediary substances that enhance or substitute the anti-microbial action of essential oils, allowing reduced essential oil usage while maintaining effectiveness

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If conventional disinfectants like hypochlorite are used, then anti-microbial effect is achieved, but skin irritation and fabric damage occur

Engineering Contradiction:
Improveanti-microbial effectVSAvoidskin irritation
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the pH parameter of the composition to be between 2 and 6, which is significantly milder than conventional hypochlorite disinfectants, thereby reducing skin irritation while maintaining anti-microbial effectiveness through the polymer complex and biocide combination

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent uses a biodegradable polymer complex that provides temporary adhesion and sustained release of anti-microbial agents, creating a gentle yet effective alternative to harsh conventional disinfectants

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

4Object-generated harmful factors

If low amounts of essential oil are used, then cost and odor are improved, but anti-microbial effectiveness decreases

Engineering Contradiction:
Improveunpleasant odorVSAvoidanti-microbial effectiveness
Core Design Contradiction:
Object-generated harmful factorsVSReliability

Solution Approach 1:

The patent merges essential oils with quaternary ammonium biocide and polymer complex into a unified formulation where the components work synergistically, allowing low essential oil concentrations to maintain effective anti-microbial activity through the combined action of all ingredients

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent creates a composite system where the polymer complex forms a matrix that entraps and releases anti-microbial agents, enabling sustained effectiveness at low essential oil concentrations while minimizing unpleasant odor

Inventive Principle:
Principle #40Composite materials

Data Source

PatentEP2576747B1Hard surface treatment composition
Publication Date: 2014.04.23 UNILEVER NV

AI summary

The invention is in the field of hard surface cleaning, especially hard surface treatment for obtaining a lasting anti-microbial benefit. It remains to be desired to prepare hard surface cleaning compositions having a high anti-microbial effect, even after longer time, with a low dosage of anti-microbial essential oils. It is therefore an object of the invention to provide a hard surface treatment composition, having good anti-microbial properties, at low levels of essential oil. Surprisingly it has been found that composition comprising a low amount of essential oil and a polymer complex provides improved anti-microbial efficacy.