Copper Citrate Composition for Stable Antimicrobial Paint Dispersion
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Solution Overview
Problem
Existing antimicrobial paints and personal care products face challenges with high toxicity, complex manufacturing processes, and limited antiviral efficacy, particularly due to the use of zinc pyrithione and water-soluble copper salts like cupric chloride, which are not suitable for paints and require high concentrations for effectiveness.
Innovation Solution
A water-insoluble copper citrate compound is used as an active ingredient, offering excellent water dispersion stability and broad-spectrum antibacterial and antiviral properties, with a lower toxicity profile, and is manufactured through a simplified process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If water-soluble copper salts like cupric chloride are used as active ingredients, then antimicrobial activity is achieved, but leaching problems occur making them unsuitable for paints
Solution Approach 1:
The patent uses copper citrate, a composite compound formed by combining copper ions with citrate ions. This composite structure provides both the antimicrobial activity of copper ions and the water-insolubility needed for paint stability, preventing leaching while maintaining effectiveness.
2Reliability
If zinc pyrithione is used at concentrations of 1,000 to 5,000 ppm for antimicrobial activity, then effective protection is achieved, but toxicity concerns arise with LD50 of 269 mg/kg
Solution Approach 1:
The patent changes the chemical parameter from zinc pyrithione to copper citrate, which has fundamentally different toxicity characteristics. Copper citrate has an LD50 of 1,580 mg/kg compared to zinc pyrithione's 269 mg/kg, providing effective antimicrobial activity at lower toxicity levels.
3Reliability
If ceramic types or zeolites are used for antimicrobial properties, then broad spectrum activity is achieved, but manufacturing complexity increases requiring high-temperature melting or zeolite metal substitution
Solution Approach 1:
The patent replaces complex, durable materials like ceramic types and zeolites with copper citrate, which achieves similar antimicrobial effects through a simpler, more straightforward manufacturing process without requiring high-temperature melting or complex substitution reactions.
4Reliability
If ceramic types or zeolites are used for antimicrobial properties, then broad spectrum activity is achieved, but additional grinding processes are required to achieve several microns particle size
Solution Approach 1:
The patent extracts the essential antimicrobial function from complex ceramic and zeolite structures, achieving the same effect with copper citrate that requires no additional grinding processes or specialized equipment to achieve the necessary particle size for effectiveness.
5Reliability
If copper salts are used at high concentrations to ensure antimicrobial activity, then effectiveness is achieved, but cost-performance ratio deteriorates
Solution Approach 1:
The patent optimizes the concentration parameter by using copper citrate, which achieves effective antimicrobial activity at lower concentrations compared to other copper salts or alternative antimicrobial agents, improving the cost-performance ratio.
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 copper citrate composition provides effective antibacterial and antiviral protection in personal care and paint products with reduced toxicity and lower concentration requirements, enhancing safety and industrial applicability.
Implementation Method 1
the active substances that realize actual antiviral performance are known as ionic components of these metals, which are produced in extremely small amounts when these metal elements come into contact with moisture in the air
Data Source
AI summary
An antimicrobial water-dispersive composition includes copper citrate as an active ingredient. The antimicrobial water-dispersive composition has excellent water dispersion stability and exhibits a wide antibacterial spectrum against bacteria, fungi and viruses when added to personal care products and paints. Thus, personal care products and paints containing the antimicrobial water-dispersive composition are also disclosed. The copper citrate is a copper citrate hydride or copper citrate anhydride.