Alveolar Sticks for Stable Passive Semiochemical Release
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Solution Overview
Problem
Existing semiochemical distribution systems, such as electric diffusers and diffuser blocks, face limitations including the need for electrical outlets, potential toxicity from volatile solvents, and chemical instability of certain pheromone molecules, which affect their effectiveness and safety for companion animals.
Innovation Solution
A method involving a stick with an alveolar internal structure that uses capillary action to passively diffuse a semiochemical composition, particularly pheromones, utilizing a solvent like 3-methoxy-3-methyl-1-butanol with specific viscosity and volatility properties to ensure stable and non-toxic release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If electric diffusers are used to distribute semiochemicals, then the semiochemicals can be released in the environment, but electrical outlets are required and liquid may be released on surrounding objects and walls
Solution Approach 1:
The patent replaces the electrically-powered diffuser system with a passive mechanical system based on capillary action. The stick structure absorbs semiochemical composition through capillary forces within its porous matrix, eliminating the need for electrical components, outlets, and power sources while maintaining continuous semiochemical release into the environment
Solution Approach 2:
The stick acts as an intermediary medium between the semiochemical composition and the environment. It absorbs and transports the composition through its capillary structure, mediating the release process without requiring direct electrical heating or pumping mechanisms, thereby preventing liquid spillage and electrical hazards
2Productivity
If electric diffusers with volatile solvents are used, then semiochemicals can be released, but toxic volatile compounds may be released
Solution Approach 1:
The patent modifies the physical-chemical parameters of the solvent system by selecting compounds with appropriate volatility ranges and low toxicity. The stick's capillary structure controls the release rate, allowing the use of safer solvent compositions that maintain effective semiochemical distribution without generating harmful volatile concentrations
3Productivity
If traditional diffuser systems are used, then semiochemicals can be distributed, but chemical instability of pheromone molecules affects effectiveness
Solution Approach 1:
The stick's porous matrix creates a protected, relatively inert environment for the semiochemical composition during storage and release. This controlled capillary environment minimizes exposure to degrading factors such as direct air contact and temperature fluctuations, thereby maintaining pheromone molecular stability and effectiveness throughout the release period
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 allows for a stable, non-toxic, and prolonged release of semiochemicals, mimicking natural pheromonal diffusion, maintaining the integrity of the semiochemical signature over an extended period without the need for electrical power or harmful substances.
Implementation Method 1
A method involving a stick with an alveolar internal structure that uses capillary action to passively diffuse a semiochemical composition
Implementation Method 2
wherein the composition of semiochemical comprises a solvent that is an alcohol or an ester... to ensure stable and non-toxic release
Implementation Method 3
Method of releasing a semiochemical in the environement by passive diffusion
Data Source
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AI summary
The invention relates to a method of releasing a semiochemical in an environment by passive diffusion, wherein the method comprises contacting a stick presenting with an alveolar internal structure extending over its longitudinal section with a composition of semiochemical, where the composition of semiochemical comprises a solvent that is an alcohol or an ester, preferably an alcohol or an ester with a density inferior to 1, a kinematic viscosity inferior or equal to 15 mm2/s at 20°C and/or a dynamic viscosity inferior or equal to 14 mPa/s at 20°C, and which is volatile at room temperature, and enabling the stick to be filled by capillary action with the said composition of semiochemical and to release the said composition of semiochemical in the environment over time. The stick can be made of the stem of a palm tree of the Calamus genus. The invention also relates to a kit for passive diffusion of a semiochemical, wherein said kit comprises one or more sticks and a composition of semiochemical, optionally with a further container for holding the composition of semiochemical and the sticks while used. The invention also relates to a stick or a set or a kit comprising a plurality of sticks filled with a composition of semiochemical or the use of a kit, or of a filled stick, for releasing a semiochemical in the environment.