Chloropropene Stabilizer Composition for Storage and Corrosion Control
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Solution Overview
Problem
Chloropropenes, such as 1,1,2,3-tetrachloropropene, undergo decomposition and degradation during storage and transport, forming undesirable components like acids and oxidation by-products, which affect the production of tetrafluoropropenes, particularly 2,3,3-tetrafluoropropene (HFO-1234yf), due to contact with metal containers.
Innovation Solution
The stabilization of chloropropenes is achieved by adding a stabilizingly effective amount of morpholine or trialkyl phosphate compounds, which inhibit decomposition, retard corrosion, and scavenge acids, thereby improving the processes for producing 2-chloro-3,3,3-trifluoropropene and 2,3,3-tetrafluoropropene.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If chloropropenes are stored in metal containers during transport and storage, then convenient storage and transport are enabled, but decomposition and corrosion occur forming undesirable components
Solution Approach 1:
A stabilizer package comprising phenolic antioxidants and amine light stabilizers is introduced as an intermediary substance between the chloropropene and metal container. This stabilizer package prevents direct harmful interaction by scavenging free radicals and blocking degradation pathways, thereby maintaining material stability while allowing convenient metal container storage and transport
Solution Approach 2:
The chemical composition parameters of the chloropropene are modified by adding specific stabilizer compounds (phenolic antioxidants and amine light stabilizers) in controlled concentrations. This parameter change transforms the unstable pure chloropropene into a stable formulated composition that resists decomposition and corrosion during storage and transport
2Duration of action of moving object
If chloropropenes undergo decomposition during storage, then acids and oxidation by-products are formed, but this adversely affects the production process of tetrafluoropropenes
Solution Approach 1:
The stabilizer package is added to the chloropropene before storage begins, performing preliminary protective action. The phenolic antioxidants and amine light stabilizers are pre-positioned to intercept and neutralize degradation-initiating species, preventing the formation of acids and oxidation by-products during the storage duration
Solution Approach 2:
The stabilizer package converts the potentially harmful decomposition process into a beneficial protective mechanism. By prioritizing the reaction of stabilizers with degradation-initiating species, the system channels what would be harmful decomposition energy into controlled stabilizer consumption, protecting the main chloropropene material and preventing harmful by-product formation
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 use of morpholine or trialkyl phosphate stabilizers effectively prevents decomposition and corrosion, ensuring the stability of chloropropenes and enhancing the production efficiency of 2-chloro-3,3,3-trifluoropropene and 2,3,3-tetrafluoropropene by minimizing the formation of undesirable components.
Implementation Method 1
The stabilization of chloropropenes using morpholine or trialkyl phosphate compounds as stabilizers, which inhibit decomposition and corrosion, and scavenge acids
Implementation Method 2
During storage and transport of chloropropenes, such as 1,1,2,3-tetrachloropropene (1230xa), it has been found that decomposition and/or other forms of degradation can occur. This can result in the formation of undesirable components such as acids, e.g., HCl, and also oxidation by-products
Data Source
AI summary
The present invention relates in part to a container for stabilized chloropropenes, such as 1,1,2,3-tetrachloropropene, otherwise known to decompose and degrade, and to the resulting stabilized chloropropene, using a morpholine compound and/or a trialkyl phosphate compound as defined herein. Such stabilized chloropropenes are useful in the manufacture of hydrofluoroolefins such as 2,3,3,3-tetrafluoroprop-1-ene (1234yf).