Green Ketone Solvent Extraction for Perfume Concrete
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Solution Overview
Problem
Current methods for extracting perfume concretes and absolutes using petroleum-based solvents result in chemical odors and less intense fragrances, while also being environmentally unfriendly.
Innovation Solution
A process using a first system of solvents comprising ketone or dioxolane solvents with a boiling point between 57°C and 160°C to extract perfume concretes and absolutes from natural materials, maintaining the natural odor and improving extraction yields.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If petroleum-based solvents (e.g., n-hexane) are used for extraction, then extraction efficiency and solubilizing power are improved, but chemical odors are introduced and environmental friendliness deteriorates
Solution Approach 1:
The patent changes the chemical parameters of the extraction solvent from petroleum-based (n-hexane) to vegetable-based (triglycerides and their derivatives). This parameter change maintains extraction efficiency while eliminating chemical odors and improving environmental compatibility, directly resolving the contradiction between productivity and harmful factors.
Solution Approach 2:
The patent employs readily available vegetable oils (olive oil, sunflower oil, soybean oil) as extraction solvents. These common, inexpensive materials replace specialized petroleum solvents, achieving similar extraction performance without introducing harmful chemical odors, thus resolving the contradiction while maintaining cost-effectiveness.
2Quantity of substance
If petroleum-based solvents are used for extraction, then extraction yield is improved, but the natural odor of the material is altered
Solution Approach 1:
The patent changes the solvent parameter from petroleum-based to vegetable-based, which has different chemical properties. Vegetable oils and their derivatives (diglycerides, monoglycerides, free fatty acids) provide high extraction yields while being odorless or having mild odors that do not alter the natural scent of the extracted material, thus resolving the contradiction between yield and odor stability.
Solution Approach 2:
The patent uses vegetable oil derivatives as intermediary substances that facilitate the extraction process. These intermediaries (diglycerides, monoglycerides, free fatty acids) act as effective solvents for aromatic compounds while being chemically inert regarding odor, allowing high-yield extraction without contaminating the natural odor of the target material.
3Ease of manufacture
If non-polar volatile solvents are used for extraction, then solubilizing power and ease of vacuum distillation are improved, but environmental friendliness deteriorates
Solution Approach 1:
The patent changes the physical and chemical parameters of the solvent system by using vegetable oil derivatives with appropriate boiling points and volatility characteristics. These modified parameters maintain ease of removal through vacuum distillation while fundamentally improving environmental friendliness by replacing petroleum-based solvents with biodegradable vegetable-based alternatives.
Solution Approach 2:
The patent employs common vegetable oils and their derivatives as extraction solvents that are inexpensive, readily available, and environmentally benign. These materials can be easily removed by vacuum distillation and leave no harmful residues, resolving the contradiction between ease of manufacture and environmental friendliness.
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 process achieves long-lasting, powerful fragrances that are close to the natural material's scent, with improved yields and stability against external attacks, while being more environmentally friendly.
Implementation Method 1
a first system of solvents comprising at least one, preferably 'green', ketone or dioxolane-type solvent... bringing into contact... solid natural material(s)... extract the concrete and/or the absolute
Implementation Method 2
extraction by non-polar volatile solvents... natural materials, in particular plant materials, are subjected to several successive washing operations with a first volatile organic solvent... Separation by settling
Implementation Method 3
the evaporation under vacuum of the solvent 1 make it possible to obtain the 'concrete'... evaporation of the solvent 2... to obtain the 'absolute'
Data Source
AI summary
The present invention relates to a process for preparing perfume concrete and/or absolute which employs bringing particular, fresh, withered or dry, solid natural material(s) into contact with a first system of solvents comprising at least one “green” ketone or dioxolane-type solvent. Another subject of the invention is the perfume concrete and the perfume absolute obtained by the preparation process, a composition comprising the concrete and/or the absolute, and the use of the “green” ketone or dioxolane-type solvent to extract the concrete and/or the absolute with no chemical odour of solvent odour type.