Process for separating trichomes from non-trichome materials

Patent metadata

Field	Value
Publication number	US-11879211-B2
Application number	US-202217895570-A
Country	US
Kind code	B2
Filing date	Aug 25, 2022
Priority date	Jun 29, 2018
Publication date	Jan 23, 2024
Grant date	Jan 23, 2024

Abstract

A process for separating trichomes from non-trichome materials, and more particularly to a process for separating trichomes that utilizes an aeration step, trichomes produced therefrom, and fibrous structures produced using such trichomes are provided.

First claim

What is claimed is:

1. A process for extracting trichomes from non-trichome materials, the process comprising the steps of:
providing a mixture of trichomes and non-trichome materials by separation from a plant source;
adding water to float a first floatable portion of the mixture;
removing at least a portion of the first floatable portion;
using air to float a second floatable portion of the mixture; and
removing at least a portion of the second floatable portion.

2. The process according to claim 1 wherein the process further comprises the step of adding one or more surfactants to the mixture.

3. The process according to claim 2 wherein at least one of the surfactants is present in the water.

4. The process according to claim 2 wherein at least one of the surfactants comprises a surfactant selected from the group consisting of: anionic surfactants, amphoteric surfactants, nonionic surfactants, zwitterionic surfactants, cationic surfactants, and mixtures thereof.

5. The process according to claim 4 , wherein at least one of the surfactants comprises a surfactant selected from the group consisting of: anionic surfactants, amphoteric surfactants, and mixtures thereof.

6. The process according to claim 2 wherein at least one of the surfactants comprises an anionic surfactant.

7. The process according to claim 6 wherein the anionic surfactant comprises an alkyl sulfate and/or an alkyl ethoxy sulfate.

8. The process according to claim 6 wherein the anionic surfactant comprises an alkyl sulfonate.

9. The process according to claim 2 wherein at least one of the surfactants comprises an amphoteric surfactant.

10. The process according to claim 9 wherein the amphoteric surfactant comprises an amine oxide.

11. The process according to claim 2 wherein at least one of the surfactants comprises a nonionic surfactant.

12. The process according to claim 11 wherein the nonionic surfactant comprises an alcohol alkoxylate.

13. The process according to claim 2 wherein process comprise the step of adding two or more surfactants to a slurry comprising the mixture.

14. The process according to claim 13 wherein at least one of the surfactants is an anionic surfactant and at least one of the surfactants is an amphoteric surfactant.

15. The process according to claim 14 wherein the anionic surfactant and amphoteric surfactant are present at a weight ratio of from about 1:1 to about 8.5:1.

16. The process according to claim 1 wherein the trichomes are physically separated from the non-trichome materials by floating the trichomes within a slurry of the mixture.

17. The process according to claim 1 wherein the trichomes are physically separated from the non-trichome materials by passing a slurry of the mixture through one or more sieves.

18. The process according to claim 17 wherein the sieve opening size is reduced from step to step.

19. The process according to claim 1 , wherein the addition of water to the mixture results in the formation of a slurry, and wherein the air is used to float a portion of the slurry.

20. The process according to claim 1 , wherein the step of using air to float a second floatable portion of the mixture is achieved by use of a dissolved air floatation unit.

Assignees

• Procter & Gamble

Inventors

• Nunes Raul Victorino
• Geary Nicholas William
• Stamper Jason Allen
• Waye Bryan Keith
• Mohammadi Khosrow Parviz

Classifications

• D21D5/02 Primary

  Straining or screening the pulp · CPC title