Liquid Nicotine Formulation with Metal Salts for Vaporization
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Solution Overview
Problem
Existing liquid nicotine formulations for aerosol-generating systems suffer from inefficient nicotine vaporization and delivery, as well as a higher risk of leakage compared to typical formulations.
Innovation Solution
A liquid nicotine formulation comprising one or more water-miscible polyhydric alcohols with a content of greater than or equal to about 5 percent by weight, and one or more low molar mass metal salts, such as metal benzoates or metal stearates, which enhance vaporization efficiency and reduce leakage risk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If typical liquid nicotine formulations are used, then the system operates with conventional viscosity, but nicotine vaporization efficiency is poor and delivery is limited
Solution Approach 1:
The patent changes the chemical composition parameters by introducing low molar mass metal salts (such as zinc stearate, calcium benzoate) and polyhydric alcohols in specific ratios. This modifies the physical properties of the formulation, particularly viscosity and volatility, to enhance nicotine vaporization efficiency and delivery by up to one order of magnitude
Solution Approach 2:
The invention creates a composite liquid nicotine formulation by combining nicotine with low molar mass metal salts and polyhydric alcohols. This composite approach leverages the synergistic effects of different components: the metal salts enhance vaporization, the polyhydric alcohols provide solubility and viscosity control, together achieving improved nicotine delivery while maintaining formulation stability
2Reliability
If typical liquid nicotine formulations are used, then the formulation has lower viscosity, but leakage risk increases
Solution Approach 1:
The patent modifies the viscosity parameter by incorporating polyhydric alcohols (such as glycerol, ethylene glycol) and low molar mass metal salts in controlled amounts. This increases the formulation's viscosity to reduce leakage risk while maintaining adequate flow properties for aerosol generation, achieving a balance between leakage resistance and operational stability
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 formulation achieves enhanced nicotine vaporization efficiency, potentially increasing nicotine delivery by up to one order of magnitude, and reduces the risk of leakage due to increased viscosity.
Implementation Method 1
exhibits more efficient vaporization of nicotine and increased nicotine delivery to a user
Implementation Method 2
reduces the risk of leakage due to increased viscosity
Data Source
AI summary
A liquid nicotine formulation for an aerosol-generating system is provided, the nicotine formulation including: one or more water-miscible polyhydric alcohols, the nicotine formulation having a water-miscible polyhydric alcohol content of greater than or equal to about 5 percent by weight; and one or more low molar mass metal salts, the one or more low molar mass metal salts being selected from the group consisting of metal cinnamates, metal cycloheptanecarboxylates, metal levulinates, metal propanoates, metal stearates, and metal undecanoates. An aerosol-generating article and an aerosol-generating system are also provided.