Antibacterial Polymer Composition for Elution-Resistant Coatings
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Solution Overview
Problem
Existing antibacterial materials face issues with elution and toxicity, and there is a need for a coating composition that maintains antibacterial properties without elution and is safe for users.
Innovation Solution
An antibacterial polymer composition comprising hydrophilic polymer and antibacterial polymer with specific repeat units, which forms a coating layer that inhibits bacterial growth through electrostatic interaction with Gram-negative bacteria, preventing elution and ensuring user safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inorganic antibacterial agents (silver or copper) are used, then thermal stability and antibacterial property under high temperature are improved, but cost increases and discoloration occurs due to metal ions
Solution Approach 1:
The patent uses organic antibacterial agents instead of expensive inorganic metal-based agents, accepting that the organic agents may have shorter service life but providing cost-effective and aesthetically pleasing (no discoloration) antibacterial protection
Solution Approach 2:
The patent changes the chemical composition parameters from inorganic metal compounds to organic antibacterial agents with specific molecular structures, thereby eliminating the discoloration issue while maintaining antibacterial efficacy
2Ease of manufacture
If organic antibacterial agents are used, then cost decreases and antibacterial effect is excellent in small amounts, but elution occurs after application reducing property maintenance
Solution Approach 1:
The patent creates a composite system by combining organic antibacterial agents with polymer materials, forming a cohesive coating structure that prevents elution while maintaining the cost advantages and high antibacterial efficacy of organic agents
Solution Approach 2:
The patent concentrates the antibacterial function in the coating layer formed by the organic agent-polymer composite, creating a localized antibacterial barrier that prevents elution while maintaining overall cost-effectiveness
3Reliability
If organic antibacterial agents are used to secure product stability, then antibacterial effect is improved, but toxicity increases causing skin irritation
Solution Approach 1:
The patent carefully selects and optimizes the chemical parameters of the organic antibacterial agents, choosing compounds with specific molecular structures that provide effective antibacterial action while having lower toxicity and reduced skin irritation potential
Solution Approach 2:
The patent uses organic antibacterial agents that can be applied as coatings and may need replacement over time, accepting controlled reapplication rather than using permanently bound but toxic inorganic agents
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 composition effectively inhibits bacterial growth, particularly of Gram-negative bacteria, while maintaining antibacterial properties over time and being environmentally friendly, with easy application on various surfaces.
Implementation Method 1
inhibits bacterial growth through electrostatic interaction with Gram-negative bacteria
Data Source
AI summary
The present disclosure relates to an antibacterial polymer composition, more specifically, to an antibacterial polymer composition enabling preparation of a coating layer exhibiting excellent antibacterial property. The antibacterial polymer composition may use a polymer including a specific number of repeat units as an antibacterial agent. Accordingly, unlike coating compositions using antibacterial monomers/antibacterial oligomers, elution of an antibacterial agent from the coating layer may be prevented even after time passes, and thus, it can continuously exhibit antibacterial property, and yet, is difficult to be absorbed in human body.