Halo Vinyl Ether Monomer Synthesis for Viable Fluoropolymer Yields
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Solution Overview
Problem
Existing methods struggle to produce partially halogenated (alkyl vinyl) ethers in commercially viable quantities and yields, limiting the production of fluoroelastomers with improved properties compared to those made with perfluoromethylvinylether (PMVE).
Innovation Solution
A method involving heating a reaction mixture of a metal, solvent, and halo (alkyl ethyl) ether to form a halo (alkyl vinyl) ether, which can then be polymerized to create fluoropolymers with improved properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If partially perhalogenated (alkyl vinyl) ethers are manufactured using conventional methods, then the monomers can be used to create new fluoroelastomers with improved properties, but the manufacturing yields and quantities are not commercially viable
Solution Approach 1:
The patent changes the chemical parameters of the reaction by using organometallic reagents (lithium, magnesium, or zinc halides) instead of conventional methods. This parameter change in the reaction mechanism enables commercially viable yields (greater than 10 percent, preferably greater than 25 percent) of partially perhalogenated (alkyl vinyl) ether monomers, resolving the contradiction between improved monomer properties and manufacturability
Solution Approach 2:
The patent introduces metal halide intermediates (lithium halide, magnesium halide, or zinc halide) as mediators in the reaction process. These intermediates facilitate the formation of partially perhalogenated (alkyl vinyl) ether monomers from halo (alkyl ethyl) ethers, enabling the reaction to proceed with commercially viable efficiency and yield
2Reliability
If new halo (alkyl vinyl) ether monomers are synthesized to improve fluoropolymer properties, then heat resistance and chemical resistance can be enhanced, but the production quantity and yield are insufficient
Solution Approach 1:
By changing the reaction parameters to use organometallic chemistry (lithium, magnesium, or zinc halides) at controlled temperatures (0°C to reflux), the patent achieves both high production quantities and improved monomer properties. The method produces sufficient quantities of partially perhalogenated (alkyl vinyl) ether monomers while maintaining the structural features needed for enhanced heat and chemical resistance in the resulting fluoropolymers
3Productivity
If conventional polymerization methods are used with existing fluoromonomers, then fluoropolymers can be produced, but the properties such as heat resistance and chemical resistance are limited
Solution Approach 1:
The patent creates composite fluoropolymer materials by incorporating partially perhalogenated (alkyl vinyl) ether monomers with unique structural features (combinations of fluorine, chlorine, and hydrogen atoms) into the polymer chain. This composite approach at the molecular level enables the resulting fluoropolymers to exhibit superior chemical resistance and heat resistance while maintaining production efficiency through the efficient monomer synthesis method
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 method allows for the production of halo (alkyl vinyl) ethers at increased yields, enabling the production of new fluoropolymers with enhanced properties such as improved heat resistance, weather resistance, and chemical resistance.
Implementation Method 1
heating a reaction mixture comprising a combination of i) a metal; ii) a solvent; and iii) a halo (alkyl ethyl) ether to form a reaction product mixture comprising a halo (alkyl vinyl) ether
Implementation Method 2
heating a reaction mixture comprising a combination of i) a metal; ii) a solvent; and iii) a halo (alkyl ethyl) ether
Implementation Method 3
The halo (vinyl ether) produced may be used to make new fluoropolymers
Data Source
AI summary
A method for making a halo (alkyl vinyl) ether comprising heating a reaction mixture comprising a combination of i) a metal; ii) a solvent; and iii) a halo (alkyl ethyl) ether according to formula (1) RCF2OC(H)(X)CF2Y (1) where R is independently H, F, Cl, Br, CF2H, CF3, CF2CF2H, linear perfluoroalkyl having 1 to 12 carbon atoms, or cyclic perfluoroalkyl having 1 to 12 carbon atoms, and X and Y are independently Cl, Br, I, or F, where X and Y are not both F; to form a reaction product mixture comprising a halo (alkyl vinyl) ether, the solvent, unreacted metal, and a metal salt.