Organosilane Quaternary Coating With Nonionic Wetting for Surface Coverage
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Solution Overview
Problem
Existing compositions employing organosilane compounds for microbiocidal applications face challenges in achieving effective coverage and adherence to surfaces, particularly inert materials, and in reducing surface tension for improved penetration and efficacy.
Innovation Solution
The incorporation of a non-ionic wetting agent, such as ethoxylated nonyl phenol, into water-stable organosilane compounds, which reduces surface tension and allows for the formation of smaller droplets, enhancing adherence and penetration on various surfaces, including textiles and inert materials, through aerosolization techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If organosilane compounds are applied to surfaces, then microbiocidal efficacy is achieved, but coverage and adherence to surfaces particularly inert materials are insufficient
Solution Approach 1:
A nonionic surfactant is introduced as an intermediary substance between the organosilane compound and the surface. The surfactant reduces surface tension and improves wetting properties, enabling the organosilane to achieve uniform coverage and strong adherence to surfaces including inert materials, while maintaining its microbiocidal activity
2Reliability
If organosilane compounds are applied to surfaces, then microbiocidal activity is achieved, but adherence to surfaces is insufficient
Solution Approach 1:
The nonionic surfactant acts as a mediator that enhances the adherence of organosilane compounds to surfaces. By reducing surface tension and improving wetting, the surfactant enables the active ingredient to bind more effectively to the surface, strengthening adherence without compromising microbiocidal activity
3Reliability
If surface tension is reduced for improved penetration, then efficacy is enhanced, but composition complexity increases
Solution Approach 1:
The surface tension parameter of the organosilane composition is modified by adding a nonionic surfactant. This parameter change enables improved penetration and efficacy against microorganisms. The surfactant is selected and formulated at optimal concentrations to achieve the desired surface tension reduction while maintaining composition simplicity and ease of use
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 compositions demonstrate improved coverage, faster drying, and greater efficacy in preventing bacterial growth on surfaces, as evidenced by significant reductions in Staphylococcus aureus bacterial counts on treated fabrics and materials, with residual protection over extended periods.
Implementation Method 1
The incorporation of a non-ionic wetting agent, such as ethoxylated nonyl phenol, into water-stable organosilane compounds, which reduces surface tension and allows for the formation of smaller droplets
Implementation Method 2
The compounds can be applied to various substrates via a spraying technique which reduces the size of the drops of the formulation to small micron size droplets
Implementation Method 3
improved compositions and methods employing these compounds are disclosed herein which provide advantages
Data Source
AI summary
Methods of applications of organosilanes optionally having a nonhydrolyzable organic group, but having one or more hydrolyzable groups, with a polyol containing at least three hydroxy groups, where any two of the hydroxy groups are separated by at least three intervening atoms by aerosolization of droplets between 0.5-8 microns are disclosed and an improved formulation comprising adding a nonionic wetting agent are disclosed. An improved aerosolization application technique and the improved formulation provide for smaller droplet size and better coverage of substrates to which the organosilanes are applied. The improved formulation has increased affinity, reduces surface tension and therefore can covalently bond more quickly. A method of treating a substrate, and the treated substrate so formed, by contacting the substrate with the improved formulation for a period of time sufficient for treatment of the substrate are disclosed.