Titanium Glycolate Preparation via Protic Solvent Filtration
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Solution Overview
Problem
Existing processes for preparing titanium glycolate require distillation of isopropanol, which is time-consuming and complicates the production, whereas the new process uses a protic solvent at elevated temperatures to form titanium glycolate as a solid that can be easily separated by filtration, reducing reaction time and increasing efficiency.
Innovation Solution
Reacting a titanium alkoxide with ethylene glycol in a molar ratio of 1:2 to 1:4 in a protic solvent at 50-100°C, eliminating the need for distillation and allowing for faster separation and production of titanium glycolate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If distillation is used to remove isopropanol from the reaction mixture, then the titanium glycolate can be obtained with good purity, but the reaction time becomes excessively long and the process becomes complex
Solution Approach 1:
The invention extracts and removes the problematic step of distillation from the process. By using a protic solvent that forms an azeotrope with isopropanol, the solvent can be removed by simple filtration after the reaction, eliminating the need for time-consuming distillation while still obtaining pure titanium glycolate product.
Solution Approach 2:
The invention changes the physical-chemical parameters of the system by introducing a protic solvent with specific properties (ability to form hydrogen bonds, azeotrope formation capability). This parameter change allows the separation mechanism to shift from distillation-based to filtration-based, dramatically reducing reaction time while maintaining product purity.
2Manufacturing precision
If distillation is used to remove isopropanol, then the titanium glycolate can be purified, but the device complexity and operational complexity increase
Solution Approach 1:
The invention extracts and removes the problematic step of distillation from the process. By using a protic solvent that forms an azeotrope with isopropanol, the solvent can be removed by simple filtration after the reaction, eliminating the need for time-consuming distillation while still obtaining pure titanium glycolate product.
Solution Approach 2:
The protic solvent acts as an intermediary substance that facilitates the reaction and subsequent separation. It mediates between the reactants during the reaction phase and then enables easy separation through azeotrope formation, allowing simple filtration to achieve purification without complex distillation equipment.
3Quantity of substance
If traditional processes are used to prepare titanium glycolate, then the product can be obtained, but the production rate is low due to long reaction times
Solution Approach 1:
The invention enables continuous production by eliminating the time-consuming distillation step. The protic solvent system allows the reaction to proceed efficiently and the product to be separated by simple filtration, maintaining continuous useful action and significantly increasing the number of batches that can be produced in the same reactor during the same period.
Solution Approach 2:
The invention skips the lengthy distillation step entirely by using a protic solvent that can be removed by filtration. This 'rushing through' of the separation process dramatically reduces the overall reaction time and increases production rate, allowing more batches to be completed in the same time period.
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
This process shortens reaction time, simplifies the production of titanium glycolate, and enables higher batch production rates, making it more economical and efficient.
Implementation Method 1
With protic solvent is meant a solvent that has the ability to form hydrogen bonds
Implementation Method 2
titanium glycolate is formed as a solid that can be easily separated from the solvent by filtration
Implementation Method 3
reacting a titanium alkoxide with ethylene glycol in a molar ratio of the titanium alkoxide to ethylene glycol from 1:2 to 1:4 in a protic solvent at a temperature in the range from 50 to 100°C
Data Source
AI summary
The invention relates to a process for the preparation of titanium glycolate comprising the steps of reacting a titanium alkoxide with ethylene glycol in a molar ratio of the titanium alkoxide to ethylene glycol from 1:2 to 1:4 in a protic solvent at a temperature in the range from 50 to 100°C to form titanium glycolate. The invention also relates to the titanium glycolate obtainable by said process and to use of said titanium glycolate in a catalyst composition in the preparation of a polyester or in a transesterification process.