Fluorinated Alkoxyvinyl Ethers via Base-Catalyzed Alcohol Addition

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Solution Overview

Problem

There is no prior disclosure of fluorinated chemical species with the general structure RfC(OR)═CHRf′, where Rf′ has at least two carbon atoms, and no basic alcohol reaction pathway to prepare fluorinated chemical species with the general structure RfC(OC)═CHRf′, where R is an alkyl functional group.

Innovation Solution

The development of alkoxyvinyl ethers with the chemical structure RfC(OR)═CHRf′, where Rf is an at least partially fluorinated functional group with at least one carbon atom, Rf′ is an at least partially fluorinated functional group with at least two carbon atoms, and R is an alkyl functional group, along with methods for their preparation involving reactions such as RfCFHCFHRf′ + KOH/ROH → RfC(OR)═CHRf′.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If fluorinated chemical species with structure RfC(OR)═CHRf′ are synthesized, then solvating properties and heat transfer properties are improved, but manufacturing complexity increases due to lack of established preparation pathways

Engineering Contradiction:

Improveheat transfer propertiesVSAvoidpreparation pathway availability

Core Design Contradiction:

Use of energy by moving objectVSEase of manufacture

Solution Approach 1:

The patent changes the chemical structure parameters by introducing the alkoxyvinyl ether functional group with specific fluorinated substituents (Rf and Rf′ groups with at least 1 and 2 carbon atoms respectively). This structural parameter change enables improved heat transfer properties while the patent simultaneously addresses manufacturing by establishing new synthesis pathways through alcohol addition reactions to perfluorinated olefins

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses alcohol (ROH) as an intermediary reagent in the synthesis pathway. The alcohol reacts with perfluorinated olefins (RfCF═CFRf′) in the presence of base catalyst (KOH) to form the desired alkoxyvinyl ether products. This intermediary approach provides a practical manufacturing route that resolves the contradiction between novel structure and manufacturing ease

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If fluorinated alkoxyvinyl ethers are used as solvents, then solvating properties and polarity are increased, but atmospheric lifetime increases leading to environmental persistence

Engineering Contradiction:

Improvesolvating propertiesVSAvoidatmospheric lifetime

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The patent applies local quality by selectively fluorinating specific positions in the molecular structure (Rf and Rf′ groups) while maintaining non-fluorinated alkyl groups (R). This localized fluorination provides enhanced solvating properties and polarity in specific molecular regions while the overall molecular design considers atmospheric degradation pathways, balancing performance with environmental considerations

Inventive Principle:

Principle #3Local quality

3Object-generated harmful factors

If new fluorinated chemical species RfC(OR)═CHRf′ are developed, then degreasing properties and cleaning effectiveness are improved, but device complexity increases due to novel synthesis requirements

Engineering Contradiction:

Improvedegreasing propertiesVSAvoidsynthesis process complexity

Core Design Contradiction:

Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The patent employs a self-service approach where the perfluorinated olefin reactant already contains the desired fluorinated carbon backbone structure. The alcohol addition reaction simply adds the alkoxyvinyl ether functional group without requiring complex multi-step synthesis. This self-organizing approach of the molecular structure reduces overall synthesis complexity while maintaining superior degreasing properties

Inventive Principle:

Principle #25Self-service

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 resulting alkoxyvinyl ethers exhibit advantageous solvating properties, boiling point ranges, degreasing properties, heat transfer properties, reduced flammability, decreased atmospheric lifetime, and increased polarity, making them suitable for various applications such as cleaning agents, heat transfer media, solvents, and dielectrics.

Implementation Method 1

RfCFHCFHRf′+KOH/ROH→RfC(OR)═CHRf′, wherein Rf is a perfluoro functional group, Rf′ is a perfluoro functional group, and R is an alkyl functional group

Methodology Applied

Scientific EffectBase-catalyzed addition reaction: Chemical Bonding

Data Source

PatentUS12331011B2Fluorinated alkoxyvinyl ethers and methods for preparing fluorinated alkoxyvinyl ethers

Publication Date: 2025.06.17 THE CHEMOURS CO FC LLC

AI summary

An alkoxyvinyl ether is disclosed having the chemical structure RfC(OR)═CHRf′, wherein Rf is an at least partially fluorinated functional group having at least one carbon atom, Rf′ is an at least partially fluorinated functional group having at least two carbon atoms, and R is a functional group. A method for preparing an alkoxyvinyl ether is disclosed, comprising RfCFHCFHRf′+KOH/ROH→RfC(OR)═CHRf′, wherein Rf is a perfluoro functional group, Rf′ is a perfluoro functional group, and R is an alkyl functional group. Another method for preparing an alkoxyvinyl ether is disclosed, comprising RfCF═CHRf′+KOH/ROH→RfC(OR)═CHRf′, wherein Rf is a perfluoro functional group, Rf′ is a perfluoro functional group, and R is an alkyl functional group.