Launderable bactericidal and virucidal fabric finish
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current antimicrobial fabric treatments are not durable against multiple laundry cycles, lack virucidal capability, and are often costly due to the use of silver, failing to effectively reduce viral growth and maintain fabric performance.
Innovation Solution
A silver-free launderable bactericidal and virucidal fabric finish using a beta-cyclodextrin-based compound with crosslinkers and transition metal salts, which binds to fabric fibers, reducing bacterial and viral activity by over 90% and deodorizing capabilities, while maintaining fabric performance and color fastness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If silver nanoparticles are used for antimicrobial fabric treatment, then bactericidal and virucidal activity is achieved, but cost increases significantly
Solution Approach 1:
The patent replaces expensive silver nanoparticles with a cost-effective organic compound containing a nitrogen-containing heterocyclic ring and specific functional groups. This substitution maintains antimicrobial and antiviral efficacy while dramatically reducing material cost, allowing widespread application in consumer textiles.
Solution Approach 2:
The invention modifies the chemical structure by incorporating specific functional groups (carboxyl, hydroxyl, amino, or carbonyl groups) that enable coordination with metal ions or direct interaction with microbial cell membranes. This structural parameter change achieves effective pathogen inactivation without requiring precious metals.
2Reliability
If film forming solutions are used for physical adhesion on fiber, then initial antimicrobial effect is provided, but durability against multiple laundry cycles is poor
Solution Approach 1:
The patent applies the antimicrobial compound to the fabric before final garment assembly, allowing the treatment to penetrate and bind to fiber structures in advance. This preliminary application ensures the active ingredient is positioned optimally within the fabric matrix before subsequent processing and use.
Solution Approach 2:
The invention uses a composite approach by combining the organic antimicrobial compound with fabric fibers through multiple interaction mechanisms including hydrogen bonding, van der Waals forces, and potential covalent bonding. This multi-mode attachment creates a durable composite structure that withstands repeated washing while maintaining antimicrobial activity.
3Object-generated harmful factors
If conventional antimicrobial treatments are applied, then odor-causing bacteria are targeted, but virucidal capability is lacking
Solution Approach 1:
The patent designs a universal antimicrobial compound with broad-spectrum activity that effectively targets bacteria, fungi, and viruses simultaneously. The nitrogen-containing heterocyclic structure with specific functional groups creates multiple interaction mechanisms that disrupt diverse pathogen structures, providing multi-functional protection in a single treatment.
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 solution provides a durable, silver-free fabric finish that effectively reduces bacterial and viral growth, including strains like SARS-CoV-2, and deodorizes, while being applicable for repeated washing and maintaining fabric properties.
Implementation Method 1
a bactericidal and virucidal fabric finish using a beta-cyclodextrin-based compound with crosslinkers and transition metal salts, which binds to fabric fibers
Implementation Method 2
a bactericidal and virucidal fabric finish using a beta-cyclodextrin-based compound with crosslinkers and transition metal salts
Implementation Method 3
a bactericidal and virucidal fabric finish using a beta-cyclodextrin-based compound with crosslinkers and transition metal salts
Data Source
AI summary
A launderable bactericidal and virucidal fabric finish formulation. The first component is a bactericidal and virucidal agent represented by formula (I):, wherein n is 7; R1, R2, and R3 are jointly or independently selected from H or one of the following groups:wherein R4 is selected from CH3 or H; m is an integer from 2 to 10; p is an integer from 9 to 15; q is an integer from 2 to 10. At least one of R1, R2, and R3 includes a Group selected from Group (II), (III), (IV), (V), (VI) or (VII). A second component includes one or more crosslinkers and/or one or more catalysts. An optional third component includes one or more transition metal salts.