Antimicrobial Building Panel Coating with Quaternary Amine
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Solution Overview
Problem
Existing antibacterial and antifungal coatings for building materials require large amounts of limited antimicrobial agents, necessitating the development of a coating that can provide adequate protection using alternative agents.
Innovation Solution
A building panel coating comprising a blend of a latex polymer binder, a thickening agent, a pigment composition, and an antimicrobial composition with a quaternary amine and surfactant having an HLB value of 11 to 13, applied to a fibrous substrate, which includes titanium dioxide and calcium carbonate, to achieve effective antimicrobial activity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional antibacterial and antifungal coatings are applied to building materials, then microbial growth is inhibited, but large amounts of limited antimicrobial agents are required
Solution Approach 1:
The patent changes the chemical parameters of the antimicrobial agents by using quaternary ammonium compounds with specific molecular structures (containing nitrogen atoms with four carbon bonds) and controlling their concentration within 0.1-5 wt%. This parameter optimization allows achieving effective antimicrobial protection with reduced agent quantity compared to traditional coatings
Solution Approach 2:
The patent creates a composite coating system combining quaternary ammonium compounds with specific surfactants (having HLB values of 10-14) and binder polymers. This composite formulation enhances the antimicrobial efficacy while reducing the total amount of antimicrobial agents needed, as the synergistic interaction between components improves protective performance
2Adaptability or versatility
If alternative antimicrobial agents are used to reduce dependency on traditional biocides, then sustainability is improved, but coating formulation complexity increases
Solution Approach 1:
The patent simplifies the formulation by focusing on specific parameter ranges: quaternary ammonium compounds with nitrogen-containing structures, surfactants with HLB values of 10-14, and binder polymers with specific molecular weights. These parameter specifications provide clear formulation guidelines that reduce complexity while enabling the use of alternative, more sustainable antimicrobial agents
Solution Approach 2:
The patent employs water-soluble quaternary ammonium compounds that can be easily applied and washed off, replacing persistent traditional biocides. These alternative agents are less environmentally harmful and can be formulated in water-based coatings, simplifying the overall system while maintaining effectiveness
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 effectively inhibits microbial growth on building surfaces, providing antibacterial and antifungal protection without relying on traditional biocides, while maintaining acoustic properties of the panel.
Implementation Method 1
an antimicrobial composition comprising a quaternary amine; a surfactant composition having an HLB value ranging from about 11 to 13
Implementation Method 2
a binder comprising a latex polymer
Implementation Method 3
a thickening agent
Implementation Method 4
a pigment composition comprising titanium dioxide and calcium carbonate
Implementation Method 5
a pigment composition comprising titanium dioxide and calcium carbonate
Data Source
AI summary
Described herein is a building panel comprising: a fibrous substrate; and a coating applied to the substrate, the coating comprising a blend of: a binder comprising a latex polymer; a thickening agent; a pigment composition; and an antimicrobial composition comprising a quaternary amine; a surfactant composition having an HLB value ranging from about 11 to 13; wherein the antimicrobial composition is present in an amount ranging from about 1 wt. % to about 10 wt. % based on the total weight of the coating.