(-)-Ambrox Aqueous Washing for Ethanol-Free Purification
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Solution Overview
Problem
Existing methods for purifying (−)-Ambrox are complex, labor-intensive, and require multiple pieces of equipment, including the use of flammable ethanol, which poses safety and handling challenges, and result in the production of mother liquor concentrates that need reworking.
Innovation Solution
A method involving washing crude (−)-Ambrox with aqueous acid, surfactant, and optionally alkali, which simplifies the purification process by reducing equipment use and eliminating the need for re-crystallization and ethanol handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the existing purification method using ethanol and multiple equipment is employed, then the purification can be achieved, but the process becomes complex, labor-intensive, and requires multiple pieces of equipment
Solution Approach 1:
The patent extracts and eliminates the problematic ethanol-based re-crystallization step from the purification process. By removing this complex step and replacing it with a simplified aqueous washing procedure, the process achieves the same purification quality with significantly reduced complexity and equipment requirements.
Solution Approach 2:
The patent changes the fundamental parameter of the washing medium from flammable ethanol to aqueous solutions (water-based). This parameter change eliminates the need for special safety equipment and complex handling procedures while maintaining effective purification, thereby reducing device complexity and labor intensity.
2Manufacturing precision
If the existing purification method is used, then the purification can be achieved, but flammable ethanol must be handled which poses safety and handling challenges
Solution Approach 1:
The patent converts the harmful flammability of ethanol into a benefit by replacing it with non-flammable aqueous solutions. This substitution eliminates safety hazards while maintaining or improving purification effectiveness, as the aqueous washing steps are equally effective at removing impurities without the associated fire risks.
Solution Approach 2:
The patent creates a safer, non-flammable processing environment by using water-based solutions instead of ethanol. This inert (non-flammable) medium eliminates the need for special fire safety equipment and handling procedures, thereby reducing safety hazards while achieving the same purification quality.
3Manufacturing precision
If the existing purification method is employed, then the purification can be achieved, but mother liquor concentrates are produced which need reworking
Solution Approach 1:
The patent improves material efficiency by eliminating the formation of mother liquor concentrates that require reworking. The simplified aqueous washing process allows for better separation and recovery of the purified product, minimizing material loss and eliminating the need to reprocess discarded mother liquors.
4Manufacturing precision
If the existing purification method is used, then the purification can be achieved, but multiple items of equipment are required which increases labor and time
Solution Approach 1:
The patent merges multiple separate purification steps into a single integrated aqueous washing process. By combining the functions of multiple equipment items into one simplified process using aqueous solutions, the patent reduces process time and labor requirements while maintaining the same purification quality.
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 method achieves high-purity (−)-Ambrox with fewer steps, less labor, and reduced environmental impact, avoiding mother liquor concentrates and minimizing equipment requirements.
Implementation Method 1
washing with an aqueous acid
Implementation Method 2
washing with an aqueous surfactant
Implementation Method 3
optionally washing with an aqueous alkali
Data Source
AI summary
A method for purifying a crude flavor or perfumery or cosmetic ingredient or intermediate, for example crude (−)-Ambrox, comprising a number of washing steps, the products of said method, and uses of said product.