Super-Gemini Surfactant Composition for Alkali-Stable Cleaning
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Solution Overview
Problem
There is a need for environmentally friendly and safe surfactants that are stable and compatible with alkali systems, as existing surfactants like NPEs and PEG-modified castor oils pose environmental concerns and stability issues, and alternative surfactants like alcohol ethoxylates are not compatible with alkali systems and can smoke under high heat.
Innovation Solution
The development of super-Gemini type surfactants, which are synthesized by linking alcohol ethoxylates at their hydrophilic heads with a multi-functional linking agent, providing compatibility with alkali systems and improving cleaning performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If alcohol ethoxylates are used as surfactants, then environmental friendliness and biodegradability are improved, but compatibility with alkali systems and stability under high heat deteriorate
Solution Approach 1:
The patent creates a composite surfactant structure by combining alcohol ethoxylate molecules with a multi-functional linking agent (such as glycerol, pentaerythritol, or trimethylolpropane). This composite structure links multiple alcohol ethoxylate molecules through their hydrophilic heads, forming a super-Gemini type surfactant that maintains the environmental benefits of alcohol ethoxylates while gaining stability through the robust central core structure that resists alkali hydrolysis and high-heat degradation.
2Productivity
If NPEs are used as surfactants, then cleaning performance is improved, but environmental safety deteriorates due to estrogen-like properties and poor biodegradability
Solution Approach 1:
The patent extracts and eliminates the harmful nonylphenol component from the surfactant system while retaining the effective ethoxylate cleaning mechanism. By using alcohol ethoxylates linked through a multi-functional core, the invention removes the estrogen-like properties and poor biodegradability associated with NPEs, while preserving the cleaning performance through the maintained hydrophilic-hydrophobic balance and micelle-forming capability.
3Productivity
If PEG-modified castor oils are used to form microemulsions, then cleaning performance is improved, but stability in alkali systems deteriorates due to hydrolysis susceptibility
Solution Approach 1:
The patent changes the chemical structure parameters of the surfactant system by replacing ester linkages with ether linkages in the linking mechanism. The multi-functional linking agent forms C-O-C ether bonds between alcohol ethoxylate molecules, which are much more resistant to alkali hydrolysis than ester bonds. This parameter change maintains microemulsion-forming capability and cleaning performance while dramatically improving stability in alkali environments.
4Adaptability or versatility
If short chain alcohols are added to solubilize oil phase, then microemulsion formation is improved, but flammability and VOC content increase
Solution Approach 1:
The patent extracts and removes the need for short chain alcohol co-solvents from the surfactant system. The super-Gemini type surfactant structure, with its multiple hydrophobic tails and controlled hydrophilic head groups, inherently provides sufficient solubilization power to form stable microemulsions with oil phases without requiring additional flammable short chain alcohols. This eliminates the fire hazard and reduces VOC content while maintaining microemulsion formation capability.
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 super-Gemini type surfactants offer comparable or superior cleaning performance to existing surfactants, are environmentally friendly, and are stable in alkali systems, reducing foam profile and improving surface activity.
Implementation Method 1
Surfactants reduce the surface tension of water by adsorbing at the liquid-gas interface
Implementation Method 2
They also reduce the interfacial tension between oil and water by adsorbing at the liquid-liquid interface
Implementation Method 3
Each surfactant molecule has a hydrophilic head that is attracted to water molecules
Implementation Method 4
a hydrophobic tail that repels water and simultaneously attaches itself to oil and grease in dirt
Implementation Method 5
Surfactants are also often incorporated into an oil-in-water microemulsion to make oil containing products appear more homogenous
Data Source
AI summary
The disclosure relates to super-Gemini type surfactants. In some embodiments, the super-Gemini type surfactants comprise two or more molecules of alcohol ethoxylate joined at their hydrophilic heads with ether bonds by a multi-functional linking agent. The disclosure also provides for the chemistries of the super-Gemini type surfactants, compositions comprising the super-Gemini type surfactants, and methods of using same.