Siloxane-Silicone Resin Surface Coating for Fluorine-Free Stain Repellency
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Solution Overview
Problem
Current non-fluoropolymer technologies face challenges in achieving effective water and oily soil repellency on surfaces while maintaining stability and affordability, with existing compositions often requiring significant sacrifices in performance characteristics.
Innovation Solution
A surface treatment composition comprising a polyorganosiloxane fluid-silicone resin mixture, with specific molecular formulations and ratios, applied in various forms to provide durable water and oil repellency, including pretreatment, post-treatment, and through-the-wash modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fluoropolymers are used to provide water and oil repellency, then stain protection efficiency is improved, but environmental and health safety deteriorates due to persistent bioaccumulation and toxicity
Solution Approach 1:
The patent removes fluoropolymer components from the composition entirely, extracting the harmful substance while retaining the desired water and oil repellency function through alternative polyorganosiloxane and silicone resin chemistry
Solution Approach 2:
The patent changes the chemical composition parameters by using specific polyorganosiloxane fluids with controlled viscosity ranges (10-10,000 cSt) and silicone resin ratios (5-50 wt%), creating a non-fluorinated alternative that achieves comparable repellency without the toxicological issues of fluoropolymers
2Object-affected harmful factors
If non-fluoropolymer compositions are used to avoid environmental harm, then health safety is improved, but stain protection efficiency deteriorates due to low repellency performance
Solution Approach 1:
The patent creates a composite system combining polyorganosiloxane fluids (providing flexibility and repellency) with silicone resins (providing adhesion and durability), where the synergistic interaction between components achieves high stain protection efficiency without fluoropolymers
Solution Approach 2:
The patent optimizes physical parameters including viscosity ratios, molecular weights, and compositional percentages to maximize water and oil repellency performance, achieving contact angle values and stain resistance comparable to fluoropolymer systems
3Reliability
If non-fluoropolymer compositions are formulated to achieve desired repellency, then stain protection is improved, but product stability deteriorates due to difficulty in obtaining stable formulations
Solution Approach 1:
The patent establishes specific parameter ranges including viscosity (10-10,000 cSt), compositional ratios (5-50 wt% silicone resin), and molecular weight specifications that ensure formulation stability while maintaining repellency performance
Solution Approach 2:
The patent uses silicone resins as intermediary components that mediate between the polyorganosiloxane fluid and the substrate, providing both adhesion and stability while the polyorganosiloxane provides the repellency function
4Object-affected harmful factors
If non-fluoropolymer compositions are developed to provide repellency, then environmental safety is improved, but manufacturing cost increases due to difficult production and formulation
Solution Approach 1:
The patent specifies practical parameter ranges including viscosity (10-10,000 cSt) and compositional percentages (5-50 wt% silicone resin) that balance performance requirements with manufacturing feasibility and cost-effectiveness
Solution Approach 2:
The patent applies different functional components at optimized local concentrations, using polyorganosiloxane fluids for repellency and silicone resins for adhesion and stability, allowing cost-effective formulation with minimal material requirements
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 repels water and oily soils, reducing staining on surfaces with high efficiency and stability, offering a cost-effective solution that maintains desired product characteristics.
Implementation Method 1
provides protection of surfaces by repelling water and oil based soils from the surface
Implementation Method 2
provides protection of surfaces by repelling water and oil based soils from the surface
Data Source
AI summary
The present invention encompasses a surface treatment composition which comprises a polyorganosiloxane fluid-silicone resin mixture and a carrier. The polyorganosiloxane fluid-silicone resin mixture comprises about 50% to about 99.99% by weight of one or more polyorganosiloxane fluid compounds, at least 0.01% by weight of one or more silicone resin, and a maximum of 5% by weight of water.