Hexafluoropropene Composition for Stable Storage and Transport

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Solution Overview

Problem

Existing hexafluoropropene compositions suffer from decomposition and purity loss during storage and transportation, especially under harsh conditions such as marine transportation, due to the presence of impurities like oxygen, hydrogen fluoride, and hydrogen chloride.

Innovation Solution

A hexafluoropropene-containing composition comprising hexafluoropropene, hexafluorocyclopropane, and controlled amounts of oxygen, hydrogen fluoride, or hydrogen chloride, with specific concentration ranges to stabilize the composition and prevent decomposition.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If hexafluoropropene is stored and transported under conventional conditions, then transportation is possible, but decomposition occurs and purity decreases

Engineering Contradiction:

Improvestorage stabilityVSAvoidpurity loss

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The patent applies parameter changes by carefully controlling the concentration of oxygen (0.05-10 ppm) and hydrogen fluoride (0.05-5 ppm) in the hexafluoropropene composition. These specific parameter ranges prevent decomposition reactions while maintaining storage stability, resolving the contradiction between transportation feasibility and purity preservation

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses oxygen and hydrogen fluoride as intermediary substances that actually prevent decomposition. By introducing these substances in controlled amounts, they act as mediators that suppress harmful decomposition reactions of hexafluoropropene during storage and transportation, thereby maintaining purity

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If hexafluoropropene composition is transported under harsh conditions (e.g., marine transportation), then transportation flexibility is improved, but decomposition accelerates and purity decreases

Engineering Contradiction:

Improvetransportation flexibilityVSAvoidpurity loss

Core Design Contradiction:

Adaptability or versatilityVSLoss of substance

Solution Approach 1:

The patent applies beforehand cushioning by pre-introducing oxygen and hydrogen fluoride in controlled concentrations before transportation. These substances serve as a protective buffer that cushions against decomposition reactions that might occur under harsh transportation conditions, enabling flexible transportation while maintaining purity

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The patent changes the compositional parameters by incorporating specific amounts of oxygen (0.05-10 ppm) and hydrogen fluoride (0.05-5 ppm). This parameter modification makes the composition resilient to harsh transportation conditions, allowing maritime transport flexibility while preventing decomposition and purity loss

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP4707268A1Composition containing hexafluoropropene

Publication Date: 2026.03.11 DAIKIN INDUSTRIES LTD

AI summary

The present disclosure aims to provide a novel hexafluoropropene-containing composition. A hexafluoropropene-containing composition is provided.