Elimination of organohalo and oxirane species in carboxylic acid ester streams
AssigneeStepan Specialty Products, LLC
InventorsJoseph C. Rongione, Jenifer Heydinger-Galante
Life of this patent
Estimating the term…
Abstract
The present technology provides a process of reducing, removing or eliminating organohalo, glycidol, and oxirane species from carboxylic acid esters streams and crude and refined triglyceride oils to provide a carboxylic acid ester stream or triglyceride oil with reduced levels or essentially free of organohalo, glycidyl or other oxirane species. The process includes adding to the carboxylic acid ester stream or triglyceride oil an amount of a carboxylate anion and a cation counterion sufficient to react with the organohalo, glycidyl and oxirane species present.
Claims37
A process of preparing a carboxylic acid ester stream with reduced levels of organohalo, glycidyl or other oxirane species, the process comprising:
- adding to the carboxylic acid ester stream an effective amount of a carboxylate anion to react with all of the organohalo, glycidyl and oxirane species present in the carboxylate acid ester stream at a temperature of 80° C. to 275° C. 140° C. to 250° C., wherein the carboxylate anion reacts with the organohalo, glycidyl or oxirane species for a sufficient amount of time to provide a carboxylic acid ester stream with reduced levels of organohalo, glycidyl or other oxirane species.
A process of removing organohalo, glycidyl or other oxirane species from a triglyceride oil comprising the steps of:
- mixing an effective amount of at least one base to an effective amount of at least one fatty acid to produce an effective amount of at least one carboxylate anion and corresponding cation counterion that is sufficient to remove the organohalo, glycidyl or other oxirane species from the triglyceride oil;
- mixing the effective amount of the carboxylate anion with the triglyceride oil at a temperature of about 80° C. to about 275° C. 140° C. to about 250° C., wherein the carboxylate anion reacts with the organohalo, glycidyl or oxirane species for a sufficient amount of time to provide a triglyceride oil product with reduced levels of organohalo, glycidyl or other oxirane species.
A process of removing or preventing the formation of organohalo, glycidyl or other oxirane species during a processing or a manufacturing procedure for a triglyceride oil comprising the steps of:
- making a triglyceride oil feedstock;
- adding a sufficient amount of at least one base to react with a sufficient amount of fatty acid within the triglyceride oil feedstock to produce a carboxylate anion and a cation counter ion in an amount sufficient to react with the organohalo, glycidyl and oxirane species present in the feedstock;
- incubating the feedstock containing the at least one base at a temperature of about 80° C. to about 275° C. 140° C. to about 250° C. for a sufficient amount of time to produce a triglyceride oil with reduced levels of organohalo, glycidyl or other oxirane species.
The process of claim of 25, wherein the additional processing step is selected from the group consisting of filtration, washing, centrifuging, winterization, extraction, acidification with a mineral acid, settling, and miscella refining.
Dependencies are inferred from the claim text.