US10428040B2 – October 1, 2019 – Processes for the isolation of a cannabinoid extract and product from Cannabis plant material

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Inventors :

Albert Jan Dijkstra

Owner :

Dijkstra, Albert Jan

Application Number :

US16125457

Document Number :

US10428040B2

Priority Date :

September 12, 2017

Filing Date :

September 7, 2018

Date of Grant/ Publication :

October 1, 2019

Class :

C07D311 / 80; A61K36 / 185; B01D11 / 02

Abstract

Disclosed are processes for obtaining a cannabinoid extract and product from Cannabis plant material. This way cannabinoids can be isolated in a way that produces higher yields than prior art methods. The disclosed processes to almost pure cannabinoids. In addition the disclosed processes can be carried out easily on a large scale in an economically advantageous manner.

Claim(s)

1. A process for obtaining a cannabinoid extract from Cannabis plant material comprising: a) the step of providing a dispersion of material comprising cannabinoids derived from one or more Cannabis plants in an oil; b) the step of isolating at least a portion of said cannabinoids from said dispersion to obtain a cannabinoid extract, wherein said step of isolating comprises one or both of: A) stripping said dispersion under reduced pressure with a gaseous stripping medium to extract at least a portion of said cannabinoids from said dispersion into said gaseous stripping medium to obtain a vapour containing cannabinoids; condensing at least part of said vapour to form a condensate; and recovering a cannabinoid extract from said condensate; and/or B) mixing said dispersion with a polar solvent, and forming a two-phase system with a first phase of said dispersion and a second phase of said polar solvent, wherein at least part of the cannabinoids is extracted into the second phase: isolating at least part of the second phase from the first phase; and wherein the extraction is optionally followed by evaporating at least part of said isolated second phase to obtain a cannabinoid containing evaporation residue.

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