Patent ID: 11857590
Assignee: ECOFIBRE LIMITED
Field: Chemical engineering (Chemistry)
Classification: CPC A  B | IPC A

Claim 0:
1. A method for producing a full spectrum hemp (Cannabis sativa) extract comprising:
a. mixing cannabis plant material in an extraction solvent of about 5% heptane and about 95% ethanol cooled to between about −20° C. and about 0° C. and collecting an extract that includes the extraction solvent and soluble substances dissolved therein;
b. distilling at least a portion of the extraction solvent off of the extract by heating the extract to a temperature of about 160° F. (about 70° C.) to about 190° F. (about 90° C.) and collecting a concentrate that is not distilled off;
c. removing at least a portion of water-soluble substances from the concentrate by partitioning the at least a portion of water-soluble substances into an aqueous phase and a remainder of substances from the concentrate into a partitioned concentrate dissolved in a phase of a nonpolar solvent;
d. heating the partitioned concentrate to a temperature of about 160° F. (about 70° C.) to about 200° F. (about 95° C.) to evaporate the nonpolar solvent and to yield a crude oil;
e. degassing the crude oil by heating the crude oil to a temperature of at least about 310° F. (at least about 155° C.) in a vacuum that is less than about two torr (less than about 270 Pa), the degassing for a time sufficient to eliminate bubbling of the crude oil, which results in a degassed crude oil;
f. performing a first pass distillation of the degassed crude oil at about 150° C. and collecting a first residue; and
g. performing a second pass distillation of the first residue at between about 170° C. and about 185° C., collecting a second distillate that is a full spectrum hemp extract, and collecting a second residue.