Phosphorus Containing Preservative Or Stabilizer Patents (Class 554/4)
  • Publication number: 20130165707
    Abstract: A method for suppressing isomerization of an olefin metathesis product produced in a metathesis reaction includes adding an isomerization suppression agent to a mixture that includes the olefin metathesis product and residual metathesis catalyst from the metathesis reaction under conditions that are sufficient to passivate at least a portion of the residual metathesis catalyst. The isomerization suppression agent includes (i) a salt and/or an ester of a phosphorous oxo acid, and/or (ii) a derivative of the phosphorous oxo acid in which at least one P—H bond has been replaced by a P—C bond, and/or (iii) a salt and/or an ester of the derivative. Methods of refining natural oils are described.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 27, 2013
    Inventors: Bruce E. Firth, Sharon E. Kirk
  • Publication number: 20130165706
    Abstract: A method for suppressing isomerization of an olefin metathesis product produced in a metathesis reaction includes adding an isomerization suppression agent to a mixture that includes the olefin metathesis product and residual metathesis catalyst from the metathesis reaction under conditions that are sufficient to passivate at least a portion of the residual metathesis catalyst. The isomerization suppression agent is phosphorous acid, a phosphorous acid ester, phosphinic acid, a phosphinic acid ester or combinations thereof. Methods of refining natural oils are described.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 27, 2013
    Inventors: Bruce E. Firth, Sharon E. Kirk, Vasudeo S. Gavaskar
  • Publication number: 20010016663
    Abstract: A method for the stabilization of a phospholipidic composition as well as a method for the production of a stabilized phospholipidic composition comprising at least one phospholipide as well as a stabilizer are described, whereby in the claimed methods at least one phospholipide is mixed with a stabilizer on the basis of phytic acid, of a salt of the phytic acid and/or of a phytic acid derivative.
    Type: Application
    Filed: May 22, 2000
    Publication date: August 23, 2001
    Applicant: RHONE-POULENC RORER GMBH & CO.
    Inventor: Miklos Ghyczy
  • Patent number: 6278004
    Abstract: A method for the stabilization of a phospholipidic composition as well as a method for the production of a stabilized phospholipidic composition comprising at least one phospholipide as well as a stabilizer are described, whereby in the claimed methods at least one phospholipide is mixed with a stabilizer on the basis of phytic acid, of a salt of the phytic acid and/or of a phytic acid derivative.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: August 21, 2001
    Assignee: Aventis Pharma Deutschland GmbH
    Inventor: Miklos Ghyczy
  • Patent number: 6100413
    Abstract: A method for the stabilization of a phospholipidic composition as well as a method for the production of a stabilized phospholipidic composition comprising at least one phospholipide as well as a stabilizer are described, whereby in the claimed methods at least one phospholipide is mixed with a stabilizer on the basis of phytic acid, of a salt of the phytic acid and/or of a phytic acid derivative.
    Type: Grant
    Filed: October 21, 1997
    Date of Patent: August 8, 2000
    Assignee: Rhone-Poulenc Rorer GmbH & Co.
    Inventor: Miklos Ghyczy
  • Patent number: 5874643
    Abstract: Fatty alcohol containing admixed therewith a small amount on the order of up to 1.0 wt. % of hypophosphorous acid, exhibits markedly reduced oxidation and oxidation-related deterioration such as discoloration and other side effects. This discovery is particularly useful when the fatty alcohol is subjected to reactions such as esterification under conditions which could cause or accelerate undesired oxidation.
    Type: Grant
    Filed: December 1, 1995
    Date of Patent: February 23, 1999
    Assignee: Witco Corporation
    Inventors: Garrett Mineo, Michael Denoux
  • Patent number: 5859267
    Abstract: A light colored basic alkali or alkaline earth metal organic salt is obtained by the reaction of a basic metal compound, an alkyl phenol and/or a carboxylic acid, carbon dioxide, and thereafter post-treating the reaction product with an organic phosphite. Alkaline earth metal salts of phenols and carboxylic acids include barium or calcium. Organic phosphites include trialkyl or dialkyl phosphites such as triisodecyl phosphite or diisooctyl phosphite.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: January 12, 1999
    Assignee: OMG Americas, Inc.
    Inventors: Rajesh Khattar, Benjamin Paul Labovitz
  • Patent number: 5614648
    Abstract: A method of producing an antioxidant containing derivatives of an organic compound, and in particular, an antioxidant glyceride derivative, comprises reacting a first compound with a second medium. By this reaction, a product is formed whereby an active component of the first compound, e.g., an antioxidant moiety, is covalently incorporated into the second medium.The second medium comprises glyceride derivatives, silicones, fluorocarbons and alkoxylates containing reactive groups such as hydroxy, amino, carboxyl, ester, or amides.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: March 25, 1997
    Inventors: George H. Greene, Robert Miller, James L. Williams, James C. Phillips, Jerry F. Stults, Jan P. E. Tellings
  • Patent number: 5552070
    Abstract: A process for the phosphorylation of epoxides, in particular of epoxidised fatty acid esters, and the use of the phosphorylation products for the production of lubricants.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: September 3, 1996
    Assignee: Rhein Chemie Rheinau GmbH
    Inventors: Volker Schafer, Robert Kohler, Gunter Schilling, Alfred Pauli, Ingo Rohrs, Joachim Korff
  • Patent number: 5523429
    Abstract: A method of inhibiting oxidation of products containing unsaturated fatty acids and their derivatives comprises treating the unsaturated fatty acids and their derivatives with N-acylphosphatidylethanolamines. Preferred N-acylphosphatidylethanolamines are N-acetylphosphatidylethanolamine and N-oleoylphosphatidylethanolamine.
    Type: Grant
    Filed: February 25, 1994
    Date of Patent: June 4, 1996
    Assignee: Rhone-Poulenc Rorer-GmbH
    Inventor: Miklos Ghyczy
  • Patent number: 5521237
    Abstract: Selected alkanolamine esters of acyclic phosphites are particularly effective as process stabilizers for polyolefins providing for melt flow stabilization and resistance to discoloration during said processing.
    Type: Grant
    Filed: June 6, 1994
    Date of Patent: May 28, 1996
    Assignee: Ciba-Geigy Corporation
    Inventors: Raymond Seltzer, Wha Chen, Roswell E. King, III, Paul Odorisio, Rita Pitteloud, Sai P. Shum
  • Patent number: 5512621
    Abstract: The alpha crystalline modification of 2,2',2"-nitrilo triethyl-tris-(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl-2, 2'-diyl)phosphite! is obtained by crystallizing said compound from selected solvents, preferably from a mixture of an aromatic hydrocarbon solvent and a lower alkanol.The alpha crystalline form is an effective process stabilizer for polyolefins, particularly polypropylene.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: April 30, 1996
    Assignee: Ciba-Geigy Corporation
    Inventors: Stephen D. Pastor, Sai P. Shum, Paul A. Odorisio
  • Patent number: 5427814
    Abstract: A fat is protected from oxidation by, in one process embodiment, forming a mixture of tocopherol and lecithin at a temperature not greater than 60.degree. C., mixing ascorbic acid dissolved in a polar solvent into the tocopherol and lecithin mixture, eliminating the solvent from the mixture at a temperature not greater than 60.degree. C. and then, incorporating the mixture into a fat. In another embodiment, lecithin is added to a fat, and tocopherol and ascorbic acid dissolved in a polar solvent are added to the lecithin-added fat after which, the solvent is eliminated from the fat.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: June 27, 1995
    Assignee: Nestec S.A.
    Inventors: Jurg Loliger, Francoise Saucy
  • Patent number: 5380890
    Abstract: A method of producing an antioxidant containing compound, and in particular, an antioxidant glyceride derivative, comprises reacting a first compound with a second medium. By this reaction, a product is formed whereby an active component of the first compound, e.g., the antioxidant, is covalently incorporated into the second medium.The second medium comprises glyceride derivatives, silicones, fluorocarbons and alkoxylates containing reactive groups such as hydroxy, amino, carboxyl, ester, or amides.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: January 10, 1995
    Inventors: George H. Greene, Robert Miller, James L. Williams, James C. Phillips, Jerry F. Stults, Jan P. E. Tellings
  • Patent number: 5344860
    Abstract: The beta crystalline modification of 2,2',2"-nitrilo[triethyl-tris-(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl-2, 2'-diyl) phosphite] is obtained by crystallizing said compound from the melt at elevated temperatures.The beta crystalline form is an effective process stabilizer for polyolefins, particularly polypropylene.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: September 6, 1994
    Assignee: Ciba-Geigy Corporation
    Inventors: Stephen D. Pastor, Sai P. Shum
  • Patent number: 5208356
    Abstract: Substantially pure, non-toxic salts and esters of conjugated linoleic acid (CLA) are useful as antioxidants and as mold growth inhibitors. Methods of making the cis-9, trans-11 isomer of linoleic acid and the compounds are also disclosed.
    Type: Grant
    Filed: April 3, 1991
    Date of Patent: May 4, 1993
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Michael W. Pariza, Yeong L. Ha
  • Patent number: 5169885
    Abstract: Phosphite compounds of the formula ##STR1## wherein R.sup.1 is an alkyl having 1 to 22 carbon atoms, and use thereof. The phosphite compounds of the present invention show stabilizing action on organic materials and are useful as antioxidants. A combined use of the compounds of the present invention with hindered phenol compounds, light stabilizers or thioalkanoate compounds further improves stabilizing effect.
    Type: Grant
    Filed: October 30, 1990
    Date of Patent: December 8, 1992
    Assignees: Yoshitomi Pharmaceutical Industries, Ltd., Mitsubishi Petrochemical Company, Ltd.
    Inventors: Naoki Hanayama, Kazuo Nakagawa, Nobuyuki Hayashi, Akiyoshi Onishi
  • Patent number: 5155244
    Abstract: A method of solubilizing a first compound in a second medium where the first compound has a limited solubility in the second medium. In particular, the method comprises reacting the first compound with the second medium. By this reaction, a product is formed whereby an active component of the first compound is covalently incorporated into the second medium.The first compound and second medium each contain at least one reactive group which will react with a reactive group of the other. In addition, the first compound comprises at least one antioxidant which will be covalently bonded to and thus effectively solubilized in the second medium by the reaction.The second medium comprises glyceride derivatives, silicones, fluorocarbons and alkoxylates containing reactive groups such as hydroxy, amino, carboxyl, ester, or amides.
    Type: Grant
    Filed: February 28, 1990
    Date of Patent: October 13, 1992
    Assignee: Karlshamns AB
    Inventors: George H. Greene, James C. Phillips, Jerry F. Stults, Jan P. E. Tellings
  • Patent number: 5137951
    Abstract: Hydroxyaminomethylphosphonates of formula I ##STR1## where R.sub.1 to R.sub.5 are independently hydrogen, alkyl, cycloalkyl, aryl or phenylalkyl, R.sub.6 has the same meanings except for hydrogen, and R.sub.1 can also be trialkylsilyl, are useful stabilizers for organic materials subject to oxidative, thermal or actinic induced degradation.
    Type: Grant
    Filed: September 11, 1991
    Date of Patent: August 11, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Stephen D. Pastor, Ramanathan Ravichandran, Roger Meuwly