US 12,329,175 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 Aug. 21, 2024, as Appl. No. 18/811,151.
Application 18/811,151 is a division of application No. 17/850,952, filed on Jun. 27, 2022.
Claims priority of provisional application 63/216,027, filed on Jun. 29, 2021.
Prior Publication US 2024/0415141 A1, Dec. 19, 2024
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)] 13 Claims
OG exemplary drawing
 
1. A method of making a formulation for solidifying used cooking oil, the formulation comprising hydrogenated castor oil and the formulation having a melting point of between 7° and 80° C. and a density of between 0.7 and 1.0 g/L, the method comprising:
heating castor oil in the presence of a catalyst at about 130-150° C. for a total of 8-10 hours until at least some of the ricinoleic acid content in the castor oil is reduced to form hydrogenated castor oil in a reaction mixture,
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 the formulation, and
wherein the ricinoleic acid has a structure of formula I

OG Complex Work Unit Chemistry
and
wherein the ratio between the catalyst and the castor oil is about 0.1-1.0 g/L.