Nicotine Salt Formulations for Aerosol Devices

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Solution Overview

Problem

Existing nicotine delivery methods, particularly electronic cigarettes, face challenges in efficiently delivering nicotine to users, with conflicting reports on the transfer efficiency of free base nicotine versus nicotine salts, and limited guidance on low-temperature vaporization conditions.

Innovation Solution

The use of nicotine salt formulations in electronic cigarettes, where the nicotine salt is combined with a biologically acceptable liquid carrier and an acid with specific vapor pressure, melting point, and boiling point characteristics, to enhance nicotine delivery and user satisfaction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If free base nicotine is used in electronic cigarettes, then the device can deliver nicotine to users, but the transfer efficiency is inconsistent and user satisfaction is limited

Engineering Contradiction:

Improvenicotine transfer efficiencyVSAvoidconsistency of nicotine delivery

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent changes the chemical form of nicotine from free base to salt formulation, and selects acids with specific vapor pressure parameters (>20 mmHg at 200°C) to optimize nicotine delivery efficiency and consistency in electronic cigarettes

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates composite nicotine salt formulations by combining nicotine with specific acids (such as levulinic acid, lactic acid, or glycolic acid) that have particular vapor pressure characteristics, resulting in a material that delivers nicotine more efficiently and consistently than free base nicotine alone

Inventive Principle:

Principle #40Composite materials

2Productivity

If nicotine salt formulations with specific acid vapor pressures are used, then nicotine transfer efficiency improves, but the formulation complexity increases

Engineering Contradiction:

Improvenicotine uptake rateVSAvoidformulation specification requirements

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent establishes specific parameter ranges for acid vapor pressure (>20 mmHg at 200°C) and melting point (at least 40 degrees lower than operating temperature) to optimize nicotine salt formulation performance, balancing improved uptake rate with manageable formulation complexity

Inventive Principle:

Principle #35Parameter changes

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 described nicotine salt formulations achieve efficient nicotine transfer and rapid absorption in the plasma, providing user satisfaction comparable to traditional cigarettes, with specific formulations demonstrating higher rates of nicotine uptake and peak concentrations.

Implementation Method 1

the electronic cigarette heating the formulation thereby generating the aerosol

Methodology Applied

Scientific EffectVaporization: Evaporation

Implementation Method 2

achieve efficient nicotine transfer and rapid absorption in the plasma

Methodology Applied

Scientific EffectAbsorption: Absorption (physical)

Data Source

PatentUS20250151773A1Nicotine salt formulations for aerosol devices and methods thereof

Publication Date: 2025.05.15 JUUL LABS INC

AI summary

A nicotine salt liquid formulation for generating an inhalable aerosol in an electronic cigarette comprising nicotine salt that forms about 0.5% to about 20% nicotine is provided.