Titanium Oxide Composition for Polyester Catalyst Dispersion
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Solution Overview
Problem
Titanium catalysts used in polyester production face issues with solubility and uniform dispersion, leading to unstable reaction quality and the introduction of impurities, as well as high catalytic activity and low thermal stability, resulting in poor polyester quality and increased side-products.
Innovation Solution
A Titanium oxide composition comprising Titanium co-precipitates, organic acids, and diol, which improves dispersion and stability, allowing for uniform and transparent solutions, and can be added at various stages of the polyesterification process to enhance catalyst activity and product quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Ti catalyst is dispersed in ethylene glycol, then catalytic activity is provided, but the Ti catalyst becomes suspension and reaction uniformity deteriorates
Solution Approach 1:
The patent employs organic compounds (such as carboxylic acids, alcohols, or esters) as intermediary substances to mediate between the Ti catalyst and ethylene glycol. These intermediaries form soluble complexes with Ti, enabling the catalyst to disperse uniformly in the reaction medium without forming suspensions, thus maintaining both catalytic activity and reaction uniformity
Solution Approach 2:
The patent changes the chemical state of the Ti catalyst by forming soluble complexes with organic compounds, transforming it from an insoluble suspension-forming substance into a soluble catalyst. This parameter change in solubility allows the Ti catalyst to maintain uniform dispersion while preserving its catalytic function
2Stability of the object's composition
If more phosphorus thermo-stabilizer is added to decrease side-products, then thermal stability is improved, but Ti catalyst activity is suppressed
Solution Approach 1:
The patent applies preliminary action by pre-forming soluble Ti catalyst complexes with organic compounds before the polycondensation reaction. This preliminary complex formation protects the Ti catalyst from deactivation by phosphorus thermo-stabilizers added during the reaction, allowing both thermal stability and catalyst activity to be maintained
Solution Approach 2:
The organic compounds serve as intermediary protective layers around the Ti catalyst, preventing direct interaction between the catalyst and phosphorus thermo-stabilizers. This intermediary protection allows the addition of phosphorus for thermal stability without suppressing Ti catalyst activity
3Productivity
If Ti catalyst is used to maintain high catalytic activity, then polyester production efficiency is improved, but thermal stability is low and side-products increase
Solution Approach 1:
The patent uses organic compounds as intermediaries to form soluble complexes with Ti catalyst, which protects the high catalytic activity of Ti while reducing its thermal instability. The intermediary complex prevents direct thermal degradation of Ti during polycondensation, maintaining both high productivity and thermal stability
Solution Approach 2:
The patent creates a composite catalyst system where Ti catalyst is combined with organic compounds (carboxylic acids, alcohols, or esters) to form a composite soluble complex. This composite structure integrates the high catalytic activity of Ti with the thermal stability of the organic ligands, enabling both high productivity and thermal stability
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 proposed solution ensures complete dispersion of the Titanium catalyst, maintaining high catalytic activity while reducing side-products, resulting in improved polyester quality with enhanced thermal stability and reduced impurities, thus achieving better L value and color consistency.
Implementation Method 1
The mentioned Titanium oxide composition comprises 0.01 ∼20 wt % Titanium co-precipitate(s), 2 ∼80 wt % organic acid, 0.1 ∼95 wt % diol, and 0.1 ∼99 wt % water
Implementation Method 2
a catalyzed poly-esterification with Titanium oxide composition. The poly-esterification comprises co-poly-esterification. The mentioned catalyzed ploy-esterification with Titanium oxide composition comprises one step of adding the Titanium oxide composition into the poly-esterification
Data Source
AI summary
The application discloses a Titanium oxide composition and the application thereof. The mentioned Titanium oxide composition comprises Titanium co-precipitate(s), organic acid, diol, and water. According to this application, a catalyzed poly-esterification with said Titanium oxide composition is also disclosed. The mentioned polyesterification comprises a step of adding said Titanium oxide composition into at least one stage selected from slurry stage, esterification stage, and polycondensation stage.