US 12,419,320 B2
Formulation to solidify cooking oil or grease and methods of making and using the same
Nao A. Gransberry, Marietta, GA (US); and Farris D. Gransberry, Marietta, GA (US)
Assigned to The Kitchen Laboratories, LLC, Marietta, GA (US)
Filed by The Kitchen Laboratories, LLC, Marietta, GA (US)
Filed on Jun. 27, 2022, as Appl. No. 17/850,952.
Claims priority of provisional application 63/216,027, filed on Jun. 29, 2021.
Prior Publication US 2022/0408750 A1, Dec. 29, 2022
Int. Cl. A23D 7/05 (2006.01); B01J 23/755 (2006.01); C07C 69/732 (2006.01); C11C 3/04 (2006.01)
CPC A23D 7/05 (2013.01) [B01J 23/755 (2013.01); C07C 69/732 (2013.01); C11C 3/04 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A formulation for solidifying used cooking oil, comprising hydrogenated castor oil,
wherein the formulation is created by:
heating castor oil at about 130-150° C. for 8-10 hours in the presence of a catalyst until at least some of the ricinoleic acid content in the castor oil is reduced to form hydrogenated castor oil in a reaction mixture,
wherein the ratio between the catalyst and the castor oil is about 0.1-1.0 g/L, treating the reaction mixture with a base followed by an acid to form a second reaction mixture, and
drying the second reaction mixture to form flakes of the formulation,
wherein the ricinoleic acid has a structure of formula I

OG Complex Work Unit Chemistry
and
wherein the formulation has a melting point of between 7° and 80° C. and a density between 0.7 and 1.0 g/L.