Purification Or Recovery Patents (Class 554/29)
  • Patent number: 8648210
    Abstract: The present invention relates to a method for purification of lipid material originating from biological material. In the method the lipid material comprising acylglycerols and phosphorus impurities and at least one added nonpolar solvent and at least one added polar solvent is provided into a reaction zone whereby at least a two phase system comprising a nonpolar phase and a polar phase is formed. The phase system is heated in the closed reaction zone under mixing at a temperature from 150° C. to 300° C. and at a pressure wherein said solvents are in subcritical state, preferably of below 100 bar, dependent on the vapor pressure of the selected solvents, until the phosphorus impurity is removed from the polar phase. Subsequently, the nonpolar phase including the purified oil comprising acylglycerols is separated and recovered from said phase system.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: February 11, 2014
    Assignee: Neste Oil Oyj
    Inventors: Mervi Hujanen, Annika Malm, Reijo Tanner
  • Patent number: 7452702
    Abstract: The present invention is directed to improving productivity of an enzymatic method for making esterified, transesterified or interesterified products. Specifically, a method that can greatly improve the productivity of enzymatic transesterification or esterification by deodorization alone, or by deodorization and purification of the initial substrate to extend the useful life of the enzyme is disclosed.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: November 18, 2008
    Assignee: Archer-Daniels-Midland Company
    Inventor: Immok Lee
  • Patent number: 7125950
    Abstract: A solvent-free process for making a polyol fatty acid polyester composition useful for preparation of polyurethanes is described. These compositions are preferably made by reaction of a natural oil (from plant or animal) with a multi-functional hydroxyl compound derived from a natural source, such as sorbitol, in presence of an alkali metal salt or base such as potassium hydroxide as a catalyst which also acts to saponify the reaction mixture. The hydroxyl content of the prepared composition depends on the amount of the multi-functional hydroxyl compound used in the preparation. In another embodiment, the hydroxyl groups of these compositions are reacted with an isocyanate, such as the polymeric diphenylmethane diisocyanate (also known as 4,4?-diphenyl methane diisocyanate, or MDI) to form polyurethanes in a conventional manner.
    Type: Grant
    Filed: April 29, 2004
    Date of Patent: October 24, 2006
    Assignee: Board of Trustees of Michigan State University
    Inventors: Jean-Pierre L. Dwan'Isa, Lawrence T. Drzal, Amar K. Mohanty, Manjusri Misra
  • Patent number: 6452029
    Abstract: A nickel catalytic system that makes it possible to obtain branched compounds from fatty substances by reacting simple olefins on polyunsaturated esters, which may or may not be conjugated, is described. The compounds that are obtained may be hydrogenated and used as lubricant bases or may be transformed according to known procedures into compounds of acid, alcohol, amine or amide type, used in varied applications.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: September 17, 2002
    Assignee: Institut Francais du Petrole
    Inventors: Gérard Hillion, Hélène Olivier, Katja Siepen, Dominique Commereuc, Robert Stern
  • Patent number: 6177114
    Abstract: A process for the production of a natural carotene rich refined and deodorized oil by subjecting the oil to a pressure of less than 0.060 mbar and to a temperature of less than 200° C., wherein the process includes distilling the oil in a short-path distiller at a temperature range between about 160° C. to about 290° C. and at pressures of 0.003 mbar to 0.08 mbar and removing free fatty acids (FFA) in the oil by condensation within the distiller. The FFA is removed by subjecting the mixture of the oil and the FFA to an internal condenser system operating at a temperature greater than the melting point of FFA in the oil. The process yields in refined, deodorized oil, in particular palm oil where the carotene and Vitamin E contained the feed oil is substantially retained in the processed oil.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: January 23, 2001
    Assignee: Carotina SDN. BHD.
    Inventor: Unnikrishnan Ramachandran Unnithan
  • Patent number: 5932261
    Abstract: The invention discloses a process for the production of a natural carotene rich refined and deodorised oil by subjecting the oil to a pressure of less than 0.060 mbar and to a temperature of less than 200.degree. C. and wherein the process includes the steps of distilling the oil in a short-path distiller at a temperature range of 160.degree. C.-290.degree. C. and at pressures of 0.003 mbar to 0.08 mbar and removing free fatty acids (FFA) in the oil by condensation within the distiller. The FFA is removed by subjecting the mixture of the oil and the FFA to an internal condensor system operating at a temperature greater than the melting point of FFA in the oil. The process yields in refined, deodorised oil, in particular palm oil where the carotene and Vitamin E contained the feed oil is substantially retained in the processed oil.
    Type: Grant
    Filed: November 8, 1996
    Date of Patent: August 3, 1999
    Assignee: Global Palm Products Sdn. Bhd.
    Inventor: Unnikrishnan Ramachandran Unnithan
  • Patent number: RE43632
    Abstract: The invention relates to compounds of formula: wherein R1 is selected from the group consisting of fatty acid acyl groups of 12 to 30 carbon atoms and fatty alcohol groups of 12 to 30 carbon atoms, and wherein R2 is selected from the group consisting of H, fatty acid acyl of 12 to 30 carbon atoms and fatty alcohol groups of 12 to 30 carbon atoms, the same as or different from R1, and the residue of a nutrient, drug, or other bioactive compound, and to the use of these compounds to deliver drugs and other bioactive compounds.
    Type: Grant
    Filed: May 1, 1996
    Date of Patent: September 4, 2012
    Assignee: Scarista, Ltd.
    Inventors: David B. Horrobin, Sherri Clarkson, legal representative, Mehar Manku, Philip Knowles, Peter Redden, Andrea Pitt, Paul Bradley, Paul Wakefield, Austin McMordie