Gas-Phase Cannabinoid Decarboxylation via Periodic Heating

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Solution Overview

Problem

Existing methods for decarboxylating cannabinoids, such as those found in industrial hemp and cannabis, often result in thermal degradation products and undesirable chemical modifications due to prolonged heating.

Innovation Solution

A method involving the chemical modification of cannabinoid molecules by providing a composition of cannabinoids with a carboxyl group, contacting it with sufficient energy to convert the native cannabinoid molecule into a carbon dioxide molecule and a modified cannabinoid molecule in a gas phase, and then condensing the modified cannabinoid molecule into a liquid distillate using a heat sink.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If prolonged heating is used for decarboxylation, then complete conversion of cannabinoid carboxylic acids is achieved, but thermal degradation products and undesirable chemical modifications are generated

Engineering Contradiction:
Improvedecarboxylation completionVSAvoidthermal degradation products
Core Design Contradiction:
ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent applies periodic action by using intermittent heating cycles rather than continuous prolonged heating. The decarboxylation process is performed in repeated cycles of heating and cooling, which allows complete conversion of cannabinoid carboxylic acids while preventing thermal degradation that would occur with continuous heating.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The patent utilizes phase transitions by heating the cannabinoid composition to vaporize the cannabinoids, then cooling to condense them. This phase change approach enables decarboxylation at lower temperatures for shorter durations, reducing thermal degradation while achieving complete conversion.

Inventive Principle:
Principle #36Phase transitions

2Productivity

If prolonged heating is used for decarboxylation, then complete conversion of cannabinoid carboxylic acids is achieved, but the time required for the process increases

Engineering Contradiction:
Improvedecarboxylation completionVSAvoidprocessing time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent uses periodic heating cycles that achieve complete decarboxylation faster than continuous heating. By alternating between heating and cooling phases, the process completes conversion in shorter total time while maintaining effectiveness.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The patent employs phase transitions (vaporization and condensation) to accelerate the decarboxylation process. The vaporization step rapidly converts solid/liquid cannabinoids to gas phase, enabling faster reaction kinetics and shorter processing times compared to conventional heating methods.

Inventive Principle:
Principle #36Phase transitions

3Productivity

If conventional heating methods are used, then decarboxylation is achieved, but energy consumption is high and product quality is reduced

Engineering Contradiction:
Improvedecarboxylation efficiencyVSAvoidenergy consumption
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The patent uses phase transitions to reduce energy consumption. By vaporizing cannabinoids and then condensing them, the process requires less total energy input compared to prolonged heating, while achieving the same decarboxylation efficiency and improving product quality.

Inventive Principle:
Principle #36Phase transitions

Solution Approach 2:

The patent applies periodic heating cycles that consume less energy than continuous heating. The intermittent nature of the heating allows heat to be applied more efficiently, reducing overall energy consumption while maintaining decarboxylation efficiency.

Inventive Principle:
Principle #19Periodic action

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 method allows for rapid decarboxylation of cannabinoids while minimizing the generation of undesirable side products, reducing the time and energy required for the process, and improving the quality of cannabinoid products.

Implementation Method 1

contacting the modified cannabinoid molecule with a heat sink to condense the modified cannabinoid molecule into a condensed cannabinoid molecule in a liquid distillate

Methodology Applied
Scientific EffectHeat sink: Heat Sink

Implementation Method 2

condensing the modified cannabinoid molecule into a condensed cannabinoid molecule in a liquid distillate

Methodology Applied
Scientific EffectCondensation: Condensation

Implementation Method 3

contacting the composition with sufficient energy to convert the native cannabinoid molecule into (i) a carbon dioxide molecule and (ii) a modified cannabinoid molecule in a gas phase

Methodology Applied
Scientific EffectDecarboxylation: Thermolysis

Implementation Method 4

contacting the composition with sufficient energy

Methodology Applied
Scientific EffectThermal energy: Heating

Data Source

PatentUS12297181B2Methods to chemically modify cannabinoids
Publication Date: 2025.05.13 NATURAL EXTRACTION SYSTEMS LLC
  • US12297181B2 patent drawing
  • US12297181B2 patent drawing
  • US12297181B2 patent drawing

AI summary

Various aspects of this disclosure relate to methods to lower the activation energy of the cannabinoid decarboxylation reaction by performing the decarboxylation reaction in the gas phase.