Antimicrobial Coating with Silver and Isothiazolinone Synergy
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Solution Overview
Problem
Current antimicrobial coatings face challenges such as inadequate resistance to microorganisms, potential for bacterial and viral contamination due to incomplete coverage, high costs, and issues with silver ion effectiveness due to resistance and leaching, especially in high-infection environments.
Innovation Solution
A liquid coating composition combining a cost-effective amount of silver compounds with a minimal quantity of isothiazolinone derivatives, optionally including TiO2 anatase for enhanced biocidal performance and UV activation, and a fluorescent additive for monitoring homogeneity, which synergistically boosts antimicrobial and antiviral efficacy while providing scratch resistance and minimizing leaching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a high concentration of silver compounds is used to ensure effective antimicrobial and antiviral protection, then the biocidal efficacy is improved, but the cost increases and leaching into the environment worsens
Solution Approach 1:
The patent combines silver compounds with isothiazolinone derivatives to create a composite coating system. This composite approach allows the isothiazolinone to enhance the biocidal effect of silver, enabling effective antimicrobial and antiviral protection at lower silver concentrations, thereby reducing leaching while maintaining reliability
Solution Approach 2:
The patent optimizes the concentration parameters of both silver compounds and isothiazolinone derivatives to achieve synergistic effects. By carefully controlling these parameters, the coating achieves effective biocidal activity with minimal silver content, thus reducing environmental leaching while maintaining high reliability
2Reliability
If a high concentration of silver compounds is used to ensure effective antimicrobial and antiviral protection, then the biocidal efficacy is improved, but the cost increases
Solution Approach 1:
The patent creates a composite system combining silver compounds with isothiazolinone derivatives. The isothiazolinone component enhances the biocidal efficacy of silver, allowing the use of lower silver concentrations while maintaining effective antimicrobial and antiviral protection, thus reducing material cost
Solution Approach 2:
The patent optimizes the concentration parameters to achieve synergistic biocidal effects. By adjusting the ratio and concentration of silver compounds and isothiazolinone derivatives, the system achieves effective protection with reduced silver content, lowering the overall cost while maintaining high biocidal efficacy
3Quantity of substance
If conventional coating materials are used to reduce cost, then the formulation cost is reduced, but the resistance to microorganisms deteriorates
Solution Approach 1:
The patent employs a composite formulation combining cost-effective isothiazolinone derivatives with silver compounds. This composite approach provides superior antimicrobial and antiviral resistance compared to conventional single-component coatings, while the isothiazolinone component helps control formulation costs
Solution Approach 2:
The patent uses conventional resinous binders such as drying oils, oleoresins varnishes, or alkyd resins as the base coating material to control costs. By adding optimized quantities of isothiazolinone derivatives and silver compounds to these conventional materials, the system achieves high microbial resistance while maintaining cost-effectiveness
4Reliability
If the coating is applied to provide complete coverage for protection, then the protection against contamination is improved, but the difficulty of detecting uncoated spots worsens
Solution Approach 1:
The patent incorporates fluorescent particles into the coating composition. These particles provide fluorescent emission that can be detected using UV lamps, creating a visual indicator system that makes uncoated spots easily detectable while maintaining complete protective coverage
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 coating composition achieves enhanced antimicrobial and antiviral efficacy even at low silver concentrations, improves scratch resistance, and reduces leaching, ensuring effective and durable protection against bacteria, viruses, and fungi without compromising environmental safety.
Implementation Method 1
TiO2 anatase to further improve the biocides properties in case of exposition to UV light (activate)
Implementation Method 2
a component that has a fluorescent emission in the range between 400 nm and 760 nm, and this feature is to determine via irradiation with a simple UV Lamp
Data Source
AI summary
The invention relates to a coating formulation with antimicrobial and antivirus properties. The biocidal effect is obtained by an unexpected synergistic action of silver ions together with isothiazolinone derivatives, which allows to reduce the content of biocides in the formulation or to have a more efficient and faster biocide performance. The same formulation also includes a fluorescent component, added to determine the homogeneous distribution of the coating on the treated substrate.One embodiment of the invention is about a coating formulation applicable by spraying and it contains solvent or co-solvent and propellant.