Aryl Intermediates with Fluorinated Tails for Cost-Effective Surfactants
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Solution Overview
Problem
Current methods for producing water and oil repellents, soil resists, and surfactants rely on expensive linear perfluorinated alcohols, necessitating the development of new nonlinear compounds as starting materials and intermediates.
Innovation Solution
The development of aryl compounds with partially fluorinated tails, specifically compounds of Formula (I) and (XX), which are synthesized by contacting functionalized aryl rings with perfluorovinyl ethers in the presence of a base and solvent, offering alternative starting materials for these applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If linear perfluorinated alcohols are used as starting materials, then water and oil repellents, soil resists, and surfactants can be produced, but the production cost is high and the synthesis process is complex
Solution Approach 1:
The invention divides the fluorinated tail into segments by introducing aromatic rings with fluorinated substituents, replacing the continuous linear perfluorinated chain. This segmentation allows for lower-cost synthesis while maintaining the essential fluorinated functionality needed for repellency and surfactant properties
Solution Approach 2:
The invention creates composite molecular structures combining aromatic rings with fluorinated alkyl or alkoxy substituents. This composite approach integrates the cost-effectiveness of aromatic chemistry with the functional benefits of fluorinated groups, achieving both economic and performance goals
2Ease of manufacture
If nonlinear compounds are used as starting materials, then production cost is reduced, but new starting materials and intermediates must be developed
Solution Approach 1:
The aromatic compounds with fluorinated substituents serve multiple functions: they act as starting materials for surfactants, intermediates for repellents, and building blocks for various fluorinated products. This multi-functionality reduces the need for developing separate specialized compounds for each application
Solution Approach 2:
The invention varies parameters such as the type of aromatic ring, position and number of fluorinated substituents, and chain length to create a family of compounds with different properties. This systematic parameter variation allows optimization for specific applications without requiring entirely new starting material designs
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
These compounds serve as effective intermediates and starting materials for producing polyacrylate copolymers, phosphate surfactants, and partially fluorinated urethanes, providing oil and water repellency and stain resistance, while avoiding the use of expensive linear perfluorinated alcohols.
Implementation Method 1
contacting functionalized aryl rings with perfluorovinyl ethers in the presence of a base and solvent
Data Source
AI summary
A compound of formula (I)wherein Rf is —CF3, —C2F5, or —CF2CFXCF3; X is —F, or —OC3F7; Y is —H, —Cl, or —Br; R is —OH, —(OCH2CH2)mOH, —(CH2)n(OCH2CH2)mOH, —O—C(O)—R1, —(CH2)nO—C(O)R1, —(OCH2CH2)mOC(O)—R1, —C(O)NHw(CH2CH2OH)2-w, —C≡N, —C≡CH; n is 1 to 10; m is 1 to 10; R1 is C1 to C10 alkyl; a is 1 to 5; b is 1 to 5; and w is 0, 1 or 2.