Cleansing Bar Antibacterial System with Phenoxyethanol and Piroctone Olamine

Solution Overview

Problem

There is a need for novel and effective antibacterial systems for personal cleansing applications, such as bar soaps, as existing compounds like triclocarban have limitations, and incorporating piroctone olamine into bar soap formulas is challenging due to its expense and impact on foam properties.

Innovation Solution

A cleansing composition comprising a combination of phenoxyethanol and piroctone olamine, with petrolatum, which provides excellent antibacterial efficacy and is formulated to improve the incorporation and stability of piroctone olamine, enhancing antibacterial performance while maintaining foam properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If piroctone olamine is incorporated into bar soap formulas to provide antibacterial efficacy, then antibacterial performance is improved, but foam properties deteriorate and manufacturing cost increases

Engineering Contradiction:

Improveantibacterial efficacyVSAvoidfoam properties

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent combines piroctone olamine with phenoxyethanol and petrolatum to create a synergistic antibacterial system. This merging of multiple components achieves superior antibacterial efficacy while the petrolatum and phenoxyethanol help maintain acceptable foam properties, resolving the contradiction between antibacterial performance and foam quality.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The invention uses a composite antibacterial system comprising piroctone olamine, phenoxyethanol, and petrolatum rather than relying on piroctone olamine alone. This composite approach allows the formulation to achieve enhanced antibacterial activity while the other components mitigate the negative impact on foam properties.

Inventive Principle:

Principle #40Composite materials

2Reliability

If piroctone olamine is incorporated into bar soap formulas to provide antibacterial efficacy, then antibacterial performance is improved, but manufacturing cost increases

Engineering Contradiction:

Improveantibacterial efficacyVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent combines piroctone olamine with phenoxyethanol and petrolatum to create a synergistic antibacterial system. This merging of multiple components achieves superior antibacterial efficacy while the petrolatum and phenoxyethanol help maintain acceptable foam properties, resolving the contradiction between antibacterial performance and foam quality.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The invention optimizes the concentration ratios of piroctone olamine, phenoxyethanol, and petrolatum to achieve cost-effective formulation. By adjusting these parameters, the patent formulation achieves enhanced antibacterial activity at lower overall costs compared to using higher concentrations of single antibacterial agents.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If existing antibacterial compounds like triclocarban are used in bar soaps, then antibacterial properties are provided, but novel and effective antibacterial systems are lacking

Engineering Contradiction:

Improveantibacterial propertiesVSAvoidnovelty of antibacterial system

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The invention uses a composite antibacterial system comprising piroctone olamine, phenoxyethanol, and petrolatum rather than relying on piroctone olamine alone. This composite approach allows the formulation to achieve enhanced antibacterial activity while the other components mitigate the negative impact on foam properties.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent employs a novel combination of antibacterial agents with optimized concentration ratios, representing a new generation of preservative systems. This parameter change from traditional single-agent formulations to multi-agent composite systems provides both novelty and enhanced 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 combination of phenoxyethanol and piroctone olamine with petrolatum in bar soaps demonstrates superior antibacterial efficacy and improved stability, enhancing the removal of bacteria from the skin and inhibiting bacterial growth, with the addition of petrolatum improving the antibacterial performance by one log unit.

Implementation Method 1

a combination of phenoxyethanol and piroctone, or a salt thereof such as piroctone olamine, can provide excellent antibacterial efficacy

Methodology Applied

Scientific EffectAntibacterial action:

Implementation Method 2

formulated to improve the incorporation and stability of piroctone olamine

Methodology Applied

Scientific EffectStabilization:

Data Source

PatentEP3383358B2Cleansing bars

Publication Date: 2024.07.03 COLGATE PALMOLIVE CO

AI summary

Described herein, are personal care compositions comprising a cleanser base comprising at least one cleanser selected from a soap and a surfactant; and an effective amount of an antibacterial system comprising a combination of phenoxyethanol and piroctone, or a salt thereof. Methods of making and using these compositions are also described.