High-Purity Triaminotin Composition for Long-Term Storage Stability
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Solution Overview
Problem
High-purity hydrocarbyl tin compounds, such as triaminotin compounds, are difficult to maintain over time due to their high reactivity and decomposability, particularly because of the low binding energy between carbon, nitrogen, and oxygen, and tin, which are Period 2 and 5 elements.
Innovation Solution
A tin composition containing a specific ratio of triaminotin and tetraaminotin compounds, along with other additives, is formulated to suppress the decomposition of triaminotin and maintain high purity, including specific storage methods under a nitrogen atmosphere.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If hydrocarbyl tin compounds are produced with high purity, then manufacturing precision is improved, but stability of the object's composition deteriorates due to high reactivity and decomposability
Solution Approach 1:
The patent stores the high-purity triaminotin compound in an inert atmosphere (nitrogen or argon) to prevent decomposition reactions with oxygen and moisture. This inert environment protects the reactive tin compound from reacting with atmospheric components, thereby maintaining both high purity and stability over time.
Solution Approach 2:
The patent controls storage temperature parameters (maintaining at or below room temperature, preferably 0-25°C) to reduce the kinetic energy of molecules and slow down decomposition reactions. By optimizing this thermal parameter, the compound maintains high purity while achieving long-term stability.
2Duration of action of stationary object
If storage time is extended, then duration of action of stationary object is improved, but purity deteriorates due to decomposition
Solution Approach 1:
Storage in inert atmosphere prevents oxidative decomposition and hydrolysis reactions that would otherwise occur over time. This allows the compound to maintain high purity even during extended storage periods of months or years.
Solution Approach 2:
By controlling temperature parameters during storage (maintaining at or below room temperature), the patent slows down decomposition kinetics, enabling long-term storage while preserving purity. The combination of temperature control and inert atmosphere creates conditions where decomposition rates are negligible over extended time periods.
Data Source
AI summary
A high-purity tin composition that can maintain high purity for a long time, in which decomposition of a triaminotin compound is suppressed and high purity of the triaminotin compound is maintained, is provided. The tin composition contains 95 mol % or more of a triaminotin compound having formula (1) in terms of tin atoms, and 0.001 to 0.5 mol % of a tetraaminotin compound having formula (2) in terms of tin atoms:R is a hydrocarbon group having 1 to 30 carbon atoms which is optionally substituted with a halogen, an oxygen atom, or a nitrogen atom, and R's are each a hydrocarbon group having 1 to 10 carbon atoms and may be identical or different from each other; two R's on the same nitrogen atom may be bonded to each other to form a 3- to 7-membered ring containing nitrogen.