TMPH Silica Adsorbent Production via Low-Temperature Polycondensation
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Solution Overview
Problem
Existing adsorbents like activated charcoal and hydrogels of silicic acid suffer from low sorption activity, selectivity issues, and irreproducible production methods, leading to inefficiencies and safety concerns, particularly in gastrointestinal applications.
Innovation Solution
The development of a nonlinear polycondensation process for 1,1,3,3-tetrahydroxy-1,3-dimethyldisiloxane polyhydrate (TMPH) using an alkaline sodium dioximethylsiliconate solution with sulfuric acid at 0-5°C, optimizing the reaction conditions to enhance adsorbing activity and output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If activated charcoal is used as an adsorbent, then it is available and widely used, but it has small sorption activity and low adsorption selectivity
Solution Approach 1:
The patent changes the chemical composition parameters by using sodium dioximethylsiliconate instead of traditional activated charcoal, and optimizes the polycondensation reaction conditions (temperature, pH, reagent ratios) to achieve high sorption activity (4.9±0.7 micromole/g) while maintaining manufacturability through a controlled chemical synthesis process
Solution Approach 2:
The patent creates a composite hydrogel structure formed by polycondensation of silicic acid derivatives, combining organic and inorganic components to achieve both high adsorption selectivity for specific substances (bilirubin, cholesterol, urea, uric acid) and sufficient sorption activity, overcoming the limitations of single-material activated charcoal
2Productivity
If the production method of HGSA is used according to Patent No.2111979, then hydrogels can be produced, but the method is irreproducible due to lack of distinctive quantity definitions
Solution Approach 1:
The patent establishes precise feedback control in the production process by defining specific reagent quantities (sodium dioximethylsiliconate solution with density 1.16-1.19 g/cm³, sulfuric acid in 20:6 ratio), monitoring reaction conditions (temperature 0-5°C, pH levels), and adjusting parameters to achieve consistent output of 96±1% with reproducible physicochemical characteristics
Solution Approach 2:
The patent specifies precise parameter ranges for reproducible production: temperature 0-5°C (contrary to previous 10-35°C), specific reagent ratios (20:6), density ranges (1.16-1.19 g/cm³), and pH control during activation, transforming an irreproducible process into a precisely controlled manufacturing method
3Ease of operation
If polycondensation is performed at temperature from +10°C to +35°C as stated in Patent No.2111979, then the process can proceed, but the final product reaction does not take place and gel-like amorphous mass cannot be separated from water layer
Solution Approach 1:
The patent inverts the temperature approach by using low temperature (0-5°C) instead of the previously recommended high temperature (10-35°C), which paradoxically enables complete reaction, proper gel formation, and easy separability of the final product from the water layer through decantation
Solution Approach 2:
The patent changes the temperature parameter from the conventional 10-35°C range to 0-5°C, and combines it with specific pH control and reagent ratios, transforming a process that produces inseparable amorphous mass into one that yields easily separable gel-like product with defined physicochemical properties
4Duration of action of stationary object
If long-term use of activated charcoal is performed, then adsorption continues, but hypovitaminosis and nutritive malabsorption occur
Solution Approach 1:
The patent applies local quality by designing the hydrogel adsorbent with selective affinity for specific substances (bilirubin, cholesterol, urea, uric acid) while having reduced affinity for vitamins and nutrients, allowing long-term adsorption duration without causing nutritive malabsorption or hypovitaminosis that occur with non-selective activated charcoal
Solution Approach 2:
The composite hydrogel structure provides selective adsorption properties through its chemical composition, enabling differentiated interaction with various substances in the gastrointestinal tract - strongly adsorbing metabolites while sparing nutrients and vitamins, thus allowing safe long-term 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
This approach significantly increases adsorbing activity, simplifies the manufacturing process, minimizes labor, and enhances the output of the final product, achieving adsorbing activity of 4.9 ± 0.7 micromole/g and a stable gel-like form with improved physicochemical properties.
Implementation Method 1
nonlinear polycondensation of 1,1,3,3-tetrahydroxy-1,3-dimethyldisiloxane polyhydrate (TMPH)
Implementation Method 2
adsorbent in different economic sectors, including chemical and pharmaceutical industries as well as health service for adsorbing different substances
Data Source
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AI summary
The invention is related to the area of synthesis of organosilicic adsorbent, which can be used in different economic sectors (chemical and pharmaceutical industries, health service). The adsorbent is a non-linear product of polycondensation of 1,1,3,3-tetrahydroxy-1,3-dimethyldisiloxane polyhydrate where n is of 88 to 98. This adsorbent is produced applying the interaction of 19-20 parts of alkaline solution of sodium dioximethylsiliconate (DOMS) with density of 1,16-1,19 g/cm3 with 6 parts of sulfuric acid with density of 1,195-1,205 g/cm3 mixed in the temperature range of 0°C to +5°C till the final product gets aged, with the following blending and washing of the final product.