Phosphazene Catalyst Synthesis Cost Reduction
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Solution Overview
Problem
Current phosphazene compounds used as catalysts are costly and complex to synthesize, limiting their application in large-scale use due to high production costs and intricate synthesis processes.
Innovation Solution
A new phosphazene compound is developed, specifically a compound of formula (I) or its solvate, which is synthesized using a method involving phosphorus pentachloride, ammonia gas, and a base, followed by reaction with hexachloro-cyclotriphosphazene or octachloro-cyclotetraphosphazene, offering a simpler and more cost-effective production process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional phosphazene compounds are used as catalysts, then catalytic activity is achieved, but production cost increases and synthesis complexity increases
Solution Approach 1:
The patent replaces expensive, complex phosphazene catalysts with inexpensive, readily available alternatives such as organic carbonic acid salts, inorganic carbonic acid salts, and their mixtures. These cheap catalysts achieve comparable catalytic activity in polymerization reactions without requiring complex synthesis procedures, directly resolving the contradiction between catalytic performance and manufacturing ease.
Solution Approach 2:
The patent changes the chemical composition parameters of the catalyst system by introducing specific carbonic acid salts with defined structural characteristics (organic or inorganic). By selecting catalysts with appropriate molecular weights, functional groups, and purity levels, the patent achieves effective catalysis while simplifying the overall system and reducing cost.
2Reliability
If complex phosphazene synthesis processes are used, then catalyst performance is achieved, but manufacturing complexity increases
Solution Approach 1:
The patent extracts and eliminates the complex phosphazene structural components from the catalyst system, retaining only the essential functional elements (carbonic acid salt structures) that provide catalytic activity. This extraction simplifies the synthesis process from multi-step phosphazene preparation to straightforward procurement or synthesis of simple carbonic acid salts.
Solution Approach 2:
The patent creates simplified copies of the catalytic function by using carbonic acid salts that mimic the essential properties of phosphazene catalysts without requiring their complex structures. These copy-catalysts achieve similar performance in polymerization reactions while being much simpler to obtain and use.
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 new phosphazene compound provides a cost-effective and readily available catalyst for polymer production, exhibiting good symmetry and stability, and is free of heavy metal elements, making it suitable for wide-ranging applications in organic catalytic reactions.
Implementation Method 1
allowing phosphorus pentachloride to be in contact with a compound of formula X and ammonia gas, thereby obtaining a compound of formula 1
Implementation Method 2
allowing the catalyst to be in contact with at least one monomer, thereby obtaining the polymer
Data Source
AI summary
Provided are a phosphazene compound, a method for preparing a phosphazene compound and a method for producing a polymer with a phosphazene compound as a catalyst. The compound of formula (I) or a solvate thereof, where A is a six- or eight-membered ring consisting of repeated P═N, and B is at least one of unsubstituted or substituted C1-6 alkylamino, unsubstituted or substituted C1-6 cycloalkylamino, unsubstituted or substituted arylamino,or halogen, and B is attached to A at phosphorus in P═N, where R is unsubstituted or substituted C1-6 alkyl, unsubstituted or substituted C1-6 cycloalkyl, unsubstituted or substituted aryl, or unsubstituted or substituted benzyl, or R forms C1-6 heterocycloalkyl together with N attached thereto.