Inversion Surfactant Polymer Dissolution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing surfactants used for dissolving and dispersing water-soluble or water-dispersible polymers, such as nonylphenol ethoxylates, are toxic and less effective, necessitating the development of nonylphenol-free alternatives for industries like water treatment and enhanced oil recovery.
Innovation Solution
A polymer composition utilizing a water-in-oil emulsion with an inversion surfactant of specific structure, allowing for rapid and complete dissolution of water-soluble or water-dispersible polymers, including the use of ethoxylated alcohols and other surfactants that are environmentally friendly and effective.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If nonylphenol ethoxylates are used as inversion surfactants, then the dissolution and dispersion of water-soluble or water-dispersible polymers is effective, but the toxicity and environmental harm increase
Solution Approach 1:
The patent changes the chemical structure parameters of the inversion surfactant by replacing nonylphenol ethoxylates with linear alcohol ethoxylates having specific chain lengths (C12-C18) and ethoxylate degrees (n=5-20). This structural parameter change maintains the surfactant's ability to invert water-in-oil emulsions and dissolve polymers effectively while eliminating the toxic aromatic ring structure of nonylphenol, thus resolving the contradiction between dissolution effectiveness and toxicity
Solution Approach 2:
The patent employs linear alcohol ethoxylates as replacement surfactants that are biodegradable and environmentally friendly compared to persistent nonylphenol ethoxylates. These linear chain surfactants break down more readily in the environment, reducing long-term toxicological impact while maintaining their functional effectiveness for polymer dissolution in industrial applications
2Productivity
If polymers are contacted with water directly, then the dissolution process begins, but the time required for complete dissolution is excessive
Solution Approach 1:
The patent applies inversion surfactants to the water-in-oil emulsion polymers before contact with water, pre-conditioning the polymer particles to facilitate rapid dissolution. The surfactant penetrates and swells the polymer particles in advance, creating pathways for water penetration and polymer chain release, thereby dramatically reducing the time required for complete dissolution when water is added
Solution Approach 2:
The inversion surfactant acts as an intermediary substance that mediates between the hydrophobic polymer particles and hydrophilic water. The surfactant molecules position themselves at the polymer-water interface, with hydrophobic portions interacting with the polymer and hydrophilic portions facing water, facilitating the dissolution process and reducing the time required for complete polymer dissolution
3Object-affected harmful factors
If linear/branched alcohol ethoxylates are used as inversion surfactants, then the toxicity is reduced, but the effectiveness for dissolving or dispersing polymers decreases
Solution Approach 1:
The patent optimizes specific parameters of linear alcohol ethoxylates, including the carbon chain length (C12-C18), ethoxylate degree (n=5-20), and molecular architecture, to achieve both environmental friendliness and high polymer dissolution effectiveness. By carefully controlling these parameters, the surfactant maintains strong interfacial activity and polymer-solvent interaction capabilities while using biodegradable linear alkyl chains instead of toxic aromatic structures
Solution Approach 2:
The patent employs composite surfactant systems that may combine linear alcohol ethoxylates with other environmentally friendly surfactant molecules or functional additives. This composite approach allows the surfactant blend to achieve enhanced polymer dissolution effectiveness through synergistic interactions while maintaining overall environmental compatibility and biodegradability of the system
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Surfactants capable of releasing and/or dissolving polymers to form water-soluble or water-dispersible polymer solutions are disclosed. In addition, polymer compositions containing a water-in-oil emulsion comprising the surfactant are provided and can be used, for example, in methods of dissolving a polymer. These surfactants and polymer compositions can be used in various industries including for water clarification, papermaking, sewage and industrial water treatment, drilling mud stabilizers, and enhanced oil recovery.