Crosslinked Guanidinyl Polymer Wipe to Reduce Microbial Re-Transfer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current disinfecting wipes often fail to effectively remove microorganisms from surfaces while minimizing re-contamination, as they can transfer microbial contaminants between surfaces due to residual antimicrobial agents or poor adhesion of the cleaning agents to the substrate.
Innovation Solution
A wipe with a cationic coating containing a crosslinked or covalently attached guanidinyl-containing polymer that is bound to the substrate, ensuring minimal residue is left on surfaces and reducing microbial transfer by at least 99% removal with no more than 0.2% re-transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If solvent or small molecule chemistry is used in wipes, then microbial removal capability is achieved, but residue is left on surfaces causing re-contamination
Solution Approach 1:
The patent changes the chemical state of the antimicrobial agent from soluble small molecules to an insoluble crosslinked polymer network. This parameter change eliminates residue formation while maintaining microbial removal capability, as the crosslinked polymer remains on the wipe substrate rather than transferring to cleaned surfaces.
Solution Approach 2:
The patent creates a composite structure combining the wipe substrate with a crosslinked polymer coating containing antimicrobial agents. This composite material integrates the structural function of the wipe with the antimicrobial function of the polymer, preventing agent transfer while maintaining effectiveness.
2Reliability
If high level disinfectants are used to eradicate resistant microorganisms, then microbial eradication is achieved, but corrosion of medical instruments and surfaces occurs
Solution Approach 1:
The patent changes the chemical parameters of the disinfectant from corrosive small molecule compounds to a crosslinked polymer matrix. This structural modification reduces corrosiveness while maintaining antimicrobial efficacy, as the polymer network provides controlled release and reduced chemical reactivity toward metal and surface materials.
Solution Approach 2:
The crosslinked polymer acts as an intermediary carrier for the antimicrobial agents, mediating their release and interaction with microorganisms. This intermediary structure reduces direct contact between aggressive disinfectant molecules and sensitive surfaces, minimizing corrosion while maintaining microbial eradication capability.
3Reliability
If antimicrobial agents are applied to wipes for microbial removal, then cleaning effectiveness is improved, but transfer of microorganisms to other surfaces occurs
Solution Approach 1:
The patent changes the physical state and adhesion properties of the antimicrobial agent by crosslinking it to the wipe substrate. This parameter change ensures the agent remains bound to the wipe during use, preventing transfer to cleaned surfaces while maintaining cleaning effectiveness through controlled microbial interaction.
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 wipe effectively removes at least 99% of microorganisms from contaminated surfaces and minimizes re-transfer to other surfaces, maintaining hygiene and safety by ensuring the antimicrobial agent remains attached to the wipe.
Implementation Method 1
The cationic coating contains a guanidinyl-containing polymer that is crosslinked, covalently attached to the substrate, or both crosslinked and covalently attached to the substrate
Implementation Method 2
The cationic coating contains a guanidinyl-containing polymer that is crosslinked, covalently attached to the substrate, or both crosslinked and covalently attached to the substrate
Implementation Method 3
The wipes are useful for removing microorganisms from a microorganism-contaminated surface and also for reducing re-contamination of the cleaned surface with the removed microorganism
Implementation Method 4
a cationic coating disposed on a surface of the substrate, distributed throughout at least a portion of the substrate, or both. The cationic coating contains a guanidinyl-containing polymer
Data Source
Figure 1~3
Figure 4A~4B
AI summary
A wipe article includes a substrate, a cationic coating disposed on a surface of the substrate, distributed throughout the substrate, or both. The cationic coating contains a guanidinyl-containing polymer that is crosslinked and bound to the substrate. The substrate includes sponge, nonwoven fabric, or woven fabric. The wipes are useful for removing microorganisms from a microorganism-contaminated surface and also for reducing re-contamination of the cleaned surface or transfer to another surface of the removed microorganisms.