Synergistic Antimicrobial Combinations for Personal Care

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing personal care products face challenges in maintaining antimicrobial efficacy while minimizing the concentration of antimicrobial agents to avoid side effects such as skin irritation and allergic reactions.

Innovation Solution

The use of a mixture comprising 3-hydroxypropyl caprylate and 3-hydroxypropyl undecylenate, in combination with other antimicrobial agents like piroctone olamine, climbazole, and zinc pyrithione, to enhance antimicrobial activity while reducing the overall concentration of these agents.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the concentration of antimicrobial agents is increased to improve antimicrobial efficacy, then protection against pathogenic microorganisms is enhanced, but skin irritation and allergic reactions increase

Engineering Contradiction:
Improveantimicrobial efficacyVSAvoidskin irritation and allergic reactions
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical parameters by introducing novel compounds (3-hydroxypropyl caprylate and 3-hydroxypropyl undecylenate) with modified molecular structures that alter the antimicrobial mechanism, achieving effective protection at lower concentrations thereby reducing skin irritation and allergic reactions

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates composite antimicrobial systems by combining multiple agents (3-hydroxypropyl caprylate, 3-hydroxypropyl undecylenate, and other antimicrobial compounds) that work synergistically to enhance efficacy while allowing each component to be used at reduced concentrations, minimizing harmful side effects

Inventive Principle:
Principle #40Composite materials

2Object-affected harmful factors

If the concentration of antimicrobial agents is reduced to minimize side effects, then skin safety is improved, but antimicrobial efficacy decreases

Engineering Contradiction:
Improveskin irritation and allergic reactionsVSAvoidantimicrobial efficacy
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent modifies the concentration parameter by achieving effective antimicrobial protection at lower concentrations (0.01-5% w/w) through the use of novel compounds with enhanced activity, thereby reducing skin irritation while maintaining efficacy

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent employs composite formulations combining multiple antimicrobial agents at optimized low concentrations that work synergistically to maintain high efficacy while minimizing total active ingredient content and associated side effects

Inventive Principle:
Principle #40Composite materials

3Reliability

If common antimicrobial agents are used to ensure product safety, then protection against microorganisms is achieved, but undesirable side effects occur

Engineering Contradiction:
Improveproduct safetyVSAvoidundesirable side effects
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical composition parameters by replacing common antimicrobial agents with novel compounds (3-hydroxypropyl caprylate and 3-hydroxypropyl undecylenate) that have different mechanisms of action, achieving product safety without the undesirable side effects associated with traditional agents

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent introduces new antimicrobial compounds that can be used at lower concentrations and potentially replaced more frequently or in combination, achieving sustained protection with reduced individual agent exposure and minimized cumulative side effects

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

Data Source

PatentUS20250041179A1Antimicrobial combinations
Publication Date: 2025.02.06 SYMRISE GMBH & CO KG
  • US20250041179A1 patent drawing

AI summary

The present invention primarily relates to the use of use of one or more compound(s) selected from the group as defined herein in constituent (i) to improve the antimicrobial effect of one or more compound(s) selected from the group as defined herein in constituent (ii) and/or the use of one or more compound(s) selected from the group as defined herein in constituent (ii) to improve the antimicrobial effect of one or more compound(s) selected from the group as defined herein in constituent (i). Moreover, the present invention relates to the use of a mixture comprising or consisting of constituents (i) and (ii) as defined herein for providing an antimicrobial effect, preferably to a solid or liquid personal care product or to a semi-finished product. The present invention further relates to a process for improving the antimicrobial effect of one or more compound(s) as defined in step a) and/or of one or more compound(s) as defined in step b) and a process for antimicrobial stablilisation of a personal care product or a semi-finished product as defined herein. It also relates to a mixture comprising or consisting of constituents (i) and (ii) as defined herein, preferably wherein the total amounts of constituents (i) and (ii), respectively, contained in the mixture are such that constituent (i) synergistically improves the antimicrobial effect of constituent (ii) and/or that constituent (ii) synergistically improve(s) the antimicrobial effect of constituent (i).