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:
Apr. 17, 1984
Filed:
Mar. 17, 1982
Dennis R Taylor, Covina, CA (US);
Zenon Demidowicz, Los Angeles, CA (US);
Harshaw/Filtrol Partnership, Oakland, CA (US);
Abstract
A composition useful for the adsorptive bleaching of edible oils, particularly of vegetable oils, is disclosed. The composition consists essentially of a major portion of bleaching clay and a minor portion of an alumino-silicate zeolite preferably of the faujasite-type structure. The zeolite used has its base exchange sites occupied by alkaline earth metal and/or transition metal cations, wherein the transition metal cations employed exclude those of the Group VIII metals. Preferably, the zeolite is a calcium-, magnesium-, or lanthanum-exchanged Y-zeolite. The presence of the zeolite in the bleaching composition significantly improves the removal of free fatty acids from the oil while permitting simultaneous removal of color impurities.