Pyrimethanil and Silver Compound Biocidal Compositions
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Solution Overview
Problem
Current biocidal compositions are inadequate in providing comprehensive protection against a broad range of microorganisms, including bacteria, fungi, and viruses, on various materials and in different environments, as they often lack synergistic effects and specific formulations for specific substrates and microorganisms.
Innovation Solution
A combination of pyrimethanil with specific silver compounds such as silver acetate, silver alginate, and silver nitrate, which provides a synergistic biocidal effect, is used to create compositions that can be applied to protect materials like wood, textiles, and plants, inhibiting microbial growth and proliferation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional biocidal compositions are used, then protection against microorganisms is provided, but the protection is inadequate against a broad range of microorganisms including bacteria, fungi, and viruses
Solution Approach 1:
The patent combines pyrimethanil (a fungicide) with silver compounds (which have broad-spectrum antimicrobial activity against bacteria, fungi, and viruses) to create a composition that provides comprehensive protection against multiple types of microorganisms simultaneously, resolving the contradiction between versatility and reliability
2Reliability
If single-component biocides are used, then the composition is simple, but synergistic effects are lacking
Solution Approach 1:
The patent merges pyrimethanil and silver compounds in specific combinations to achieve synergistic biocidal effects, where the combined activity exceeds the sum of individual components, thereby improving reliability while accepting controlled complexity
Solution Approach 2:
The patent creates composite biocidal compositions combining different active ingredients (pyrimethanil and silver compounds) with specific carriers and adjuvants, forming a multi-component system that leverages the strengths of each component for enhanced and reliable biocidal activity
3Duration of action of stationary object
If biocidal compositions are applied to protect materials, then microbial growth is inhibited, but protection must be long-lasting across various environments
Solution Approach 1:
The patent develops biocidal compositions with universal applicability across multiple substrates (wood, textiles, plants, food products) and environmental conditions, using the synergistic combination of pyrimethanil and silver compounds to maintain long-lasting protection effectiveness in diverse settings
Data Source
AI summary
The present invention relates to compositions comprising a combination of pyrimethanil, or a salt thereof, together with one or more silver salts selected from silver acetate, silver alginate, silver azide, silver citrate, silver lactate, silver nitrate, silver sulfate, silver chloride, silver thiocyanate, silver-sodium-hydrogen-zirconium phosphate, silver sulfadiazine, silver cyclohexanediacetic acid and disilver 2,5-dichloro-3,6-dihydroxy-2,5-cyclohexadiene-1,4-dione; in respective proportions to provide a synergistic biocidal effect. Another suitable silver component (II) is nano-silver particles, typically with a particle size of 1-1000 nm. Compositions comprising these combinations are useful for the protection of any living or non-living material against deterioration due to the action of microorganisms such as bacteria, fungi, yeasts, algae, and the like.