Mannitol Modification III Crystallization Purity Scale-Up
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Solution Overview
Problem
Current methods for producing mannitol modification III are limited, as it is primarily obtained as a byproduct of sorbitol production and cannot be scaled up to meet commercial demands due to impurities and inefficient direct crystallization processes.
Innovation Solution
A method involving the preparation of a solution with mannitol and an auxiliary agent, followed by solidification, which allows for the isolation of substantially pure mannitol modification III through techniques like cooling or evaporation, enabling commercial-scale production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If mannitol modification III is produced as a byproduct of sorbitol production, then some mannitol modification III can be obtained, but the production cannot be scaled up to meet commercial demands due to impurities and inefficient direct crystallization processes
Solution Approach 1:
The patent extracts and isolates mannitol modification III from the sorbitol production mixture through a specific crystallization process. By controlling cooling rates and using seed crystals, the method selectively crystallizes mannitol modification III while leaving impurities in the mother liquor, thereby obtaining high-purity product that can be scaled up commercially.
Solution Approach 2:
The patent employs parameter changes in the crystallization process, specifically controlling temperature, cooling rates, and saturation levels to favor the formation of mannitol modification III. By adjusting these parameters, the process achieves both high quantity production and high purity, resolving the contradiction between scale-up capability and product quality.
2Ease of manufacture
If direct crystallization is used to produce mannitol modification III, then the process is simple, but the amounts produced are insufficient to meet commercial demands
Solution Approach 1:
The patent applies preliminary action by pre-cooling the sorbitol-mannitol solution to a specific temperature range before crystallization begins. This preliminary temperature control sets up the conditions necessary for high-yield crystallization of mannitol modification III, enabling both process simplicity and commercial-scale productivity when the crystallization is initiated.
Solution Approach 2:
The patent maintains continuous useful action through a controlled crystallization process where the solution is cooled continuously to the crystallization temperature, and crystals are continuously formed and harvested. This continuous operation maximizes the yield of mannitol modification III while keeping the process simple and scalable for commercial production.
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 method enables the production of commercially viable amounts of pure mannitol modification III with improved direct compression properties, overcoming the limitations of existing methods by providing a scalable and efficient process.
Implementation Method 1
solidifying mannitol modification III from the solution
Implementation Method 2
solidifying mannitol modification III from the solution
Data Source
AI summary
Methods for preparing mannitol modification III are described herein. The methods relate to preparing solutions of mannitol in a suitable solvent and an auxiliary agent and solidifying from the solutions mannitol of modification III.