Antimicrobial Coating Composition for Durable Surface Disinfection

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Solution Overview

Problem

Current biocides used for disinfection have drawbacks such as environmental toxicity, biodegradability, corrosiveness, and limited stability, and fail to effectively control a broad spectrum of biological agents including viruses, bacteria, and fungi without requiring immiscible materials or oil-in-water emulsions.

Innovation Solution

A composition comprising an organosilane quaternary compound and a quaternary ammonium compound, along with optional oxidizing agents, chelating agents, and stabilizing agents, providing long-lasting antimicrobial activity without the need for immiscible materials, applied through various methods for surface disinfection and material treatment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional biocides (alcohol, peroxides, phenol, quaternary ammonium salts, chlorine-based biocides) are used for disinfection, then antimicrobial activity is achieved, but environmental toxicity, biodegradability issues, corrosiveness, and limited stability occur

Engineering Contradiction:

Improveantimicrobial activityVSAvoidenvironmental toxicity and corrosiveness

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The invention combines organosilane quaternary compounds with traditional quaternary ammonium compounds to create a composite biocidal system. The organosilane component provides enhanced stability and durability while maintaining antimicrobial efficacy, reducing the need for harsh conventional biocides and their associated environmental toxicity and corrosiveness issues

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The invention modifies the chemical structure by introducing organosilane groups with specific functional groups (amino, chloro, epoxy, or mercapto substituents) to alter the properties of the biocide. This structural parameter change enhances stability and reduces harmful environmental effects while preserving antimicrobial activity

Inventive Principle:

Principle #35Parameter changes

2Duration of action of stationary object

If long-lasting antimicrobial protection is provided, then duration of action is improved, but composition stability and safety may be compromised

Engineering Contradiction:

Improveduration of antimicrobial protectionVSAvoidcomposition stability and safety

Core Design Contradiction:

Duration of action of stationary objectVSReliability

Solution Approach 1:

The organosilane quaternary compounds provide self-sustaining antimicrobial protection by forming durable coatings that release active biocidal components over time. The silane-based structure inherently provides long-term stability and safety without requiring additional stabilizing additives, achieving extended duration of action while maintaining composition integrity

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The organosilane compounds form protective coatings on surfaces in advance, creating a persistent antimicrobial barrier that provides long-lasting protection. This preliminary formation of stable silane-based coatings ensures both extended duration of action and maintained composition stability

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS8999357B2Methods and compositions for biocidal treatments

Publication Date: 2015.04.07 TERMPRO LLC

AI summary

The present invention provides a composition having disinfectancy & residual antimicrobial activity, where the antimicrobial composition comprises an organosilane quaternary compound and a quaternary ammonium compound and other formulations. Also provided are methods of disinfecting an article or providing an antimicrobial coating to an article using the same.