The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 1981
Filed:
Dec. 26, 1979
Christopher R Beharry, Cincinnati, OH (US);
The Procter & Gamble Company, Cincinnati, OH (US);
Abstract
This invention relates to an improved process for refining and dewaxing crude vegetable oils and, more particularly, to a process in which efficient separation of undesirable waxes (about 60% to 90%) can be consistently achieved in refining crude oils such as sunflower, safflower, and corn oil. A process for bulk dewaxing and refining crude vegetable oil comprising the steps of: tempering said crude vegetable oil for wax nucleation at a temperature of from about 75.degree. F. to about 120.degree. F. for at least about 24 hours; then cooling and holding said tempered crude vegetable oil for wax agglomeration at a temperature of from about 40.degree. F. to about 70.degree. F. for at least 5 hours; refining said tempered and cooled oil at a temperature of about 80.degree. F.-90.degree. F., with an aqueous alkali solution to provide a mixture of a wax containing aqueous phase and a refined oil phase; heating said mixture to a maximum temperature of about 120.degree. F.; and separating said oil phase from said aqueous phase.