Multi-branched Surfactant for Synthetic Fiber Soil Release
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Solution Overview
Problem
Current soil release agents struggle to effectively remove soil and oil stains from textiles, particularly synthetic fibers, as they are hydrophobic and oleophilic, leading to redeposition of stains during washing and incomplete cleaning, resulting in textiles appearing gray or yellowish due to residual contaminants.
Innovation Solution
A multi-branched soil release/wetting agent comprising an oxygen-containing polyfunctional base compound with surfactant branches, including hydrophilic and hydrophobic constituents, is applied in an aqueous solution, enhancing cleanability and moisture management without using fluorochemicals, and can be added to fabric conditioners or used in dryer sheets for improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional soil release agents are used on synthetic fibers, then the fibers remain hydrophobic and oleophilic, but this causes oil and grime to be readily embedded in the fiber while preventing water from entering to remove contaminants
Solution Approach 1:
The invention uses a composite soil release agent comprising a polyol backbone with multiple surfactant branches (including both anionic and nonionic surfactants). This composite structure combines the hydrophobicity needed for oil release with hydrophilic components that enable water penetration, resolving the contradiction between soil release performance and cleanability.
Solution Approach 2:
The surfactant branches provide local quality variation around the polyol backbone, with different regions having different wettability characteristics. The anionic surfactant branches provide hydrophilic zones for water penetration while nonionic branches provide hydrophobic zones for oil repellency, enabling simultaneous soil release and cleanability.
2Stability of the object's composition
If synthetic fibers are treated with traditional soil release agents, then the treatment is permanent via crosslinking or heat-setting, but the fibers remain hydrophobic and oil stains are readily embedded
Solution Approach 1:
The invention changes the chemical parameters of the soil release agent by using a polyol backbone with multiple surfactant branches instead of traditional single-function agents. This parameter change enables the treatment to be permanent while simultaneously providing both hydrophobic and hydrophilic properties to prevent oil embedding.
3Productivity
If textiles are washed with conventional detergents, then some soil is removed, but soil remaining in wash water is redeposited onto the textile material prior to the end of the wash cycle
Solution Approach 1:
The polyol backbone with surfactant branches acts as an intermediary agent that modifies the interaction between wash water and textile soils. The hydrophilic components facilitate water penetration while hydrophobic components prevent redeposition, enabling complete soil removal without compromising cleaning efficiency.
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 solution significantly enhances soil and oil release properties, improves moisture transport, and provides a biodegradable alternative, resulting in better cleaning efficacy and fabric comfort without adverse environmental impact, while also acting as an emulsion stabilizer and ironing aid.
Implementation Method 1
a multi-branched soil release/wetting agent having an oxygen-containing polyfunctional base compound and at least two surfactant branches attached thereto, wherein each surfactant branch includes at least one hydrophilic and at least one hydrophobic constituent
Implementation Method 2
each surfactant branch includes at least one hydrophilic and at least one hydrophobic constituent
Implementation Method 3
synthetic fibers, and, therefore, fabrics having synthetic fibers incorporated therein or made entirely of synthetic fibers, are hydrophobic and oleophilic
Data Source
AI summary
The invention relates to a soil release agent comprising a multi-branched soil release/wetting agent having an oxygen-containing polyfunctional base compound and at least two surfactant branches attached thereto, wherein each surfactant branch includes at least one hydrophilic and at least one hydrophobic constituent and a polyester release agent in an aqueous solution.