Solid Polymeric Diffuser Impregnation with C10-C18 Monoester
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Solution Overview
Problem
Existing solid diffusers of perfumes or insecticides face issues with rapid evaporation of volatile substances, leading to insufficient long-term effectiveness, and existing solutions like diffusion regulators or compatibilizing agents do not adequately address the quantity and diffusion profile of these substances, especially in silicone materials, and are associated with complex manufacturing processes.
Innovation Solution
Impregnating a solid polymeric material with a solution containing a C10-C18 monoester and a saturated C2-C10 diester, which improves the infusion rate and diffusion profile of volatile organic substances, such as perfumes or insecticides, without causing material deformation or swelling, using a process that involves solubilizing the substance in the solvent and impregnating the material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If volatile substance is introduced into solid polymeric material by impregnation, then the material can be used for perfuming or deodorizing, but the volatile substance evaporates quickly at first and is then released in insufficient quantity
Solution Approach 1:
The patent introduces a solvent as an intermediary substance between the volatile organic compound and the polymeric matrix. This solvent acts as a carrier that facilitates the infusion of the volatile substance into the material and regulates its release over time, preventing both rapid evaporation and insufficient long-term release.
Solution Approach 2:
The patent modifies the physical and chemical parameters of the impregnation system by selecting specific solvents with appropriate volatility, viscosity, and affinity for both the volatile substance and the polymeric matrix. These parameter changes enable controlled diffusion and prolonged release of the volatile substance.
2Reliability
If diffusion regulators or compatibilizing agents are added to control vapor pressure, then the diffusion rate can be regulated, but the manufacturing process becomes complex and costly
Solution Approach 1:
The patent extracts the diffusion control function from complex multi-component systems (regulators, compatibilizing agents, surfactants) and concentrates it into a single solvent component. This simplifies the formulation and manufacturing process while maintaining reliable diffusion control through the inherent properties of the selected solvent.
3Stability of the object's composition
If volatile substance is mixed with liquid silicone resin and crosslinked, then the substance is trapped in the matrix, but the manufacturing process becomes complex and the material may undergo deformation or swelling
Solution Approach 1:
The patent segments the impregnation process into two distinct stages: first, the volatile substance is infused into the polymeric material using a solvent; second, the material is dried to remove the solvent. This segmentation avoids the need for complex crosslinking chemistry while achieving stable incorporation of the volatile substance without material deformation.
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 allows for a prolonged and controlled release of volatile substances, enhancing the effectiveness and duration of perfuming or deodorizing applications while maintaining material integrity and reducing manufacturing complexity.
Implementation Method 1
a solid polymeric material impregnated with a volatile organic substance
Implementation Method 2
the diffusion rate of the insecticide is regulated by adding a compound making it possible to lower its vapor pressure
Implementation Method 3
the volatile substance they contain tends to evaporate quickly at first
Data Source
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AI summary
The present invention concerns a solid polymeric material impregnated with a volatile organic substance (such as a perfume, an odour-masking agent or an insecticide) and a solvent comprising a C10-C18 monoester of C1-C8 alkyl that helps improve the rate of infusion of the volatile organic substance in the material and the diffusion profile of same. It also concerns a method for producing this material, and the uses of same for perfuming or deodorising the atmosphere, the body or laundry or as an insect repellent or insecticide. The invention also concerns a perfuming or deodorising product, an insect repellent or an insecticide comprising the abovementioned material.