Oxygen Containing Hetero Ring In Preservative Or Stabilizer Patents (Class 570/114)
  • Publication number: 20130283834
    Abstract: The present invention relates to compositions comprising at least one fluoroolefin and an effective amount of stabilizer that may be at least one phenol or a mixture of at least one phenol with other stabilizers. The stabilized compositions may be useful in cooling apparatus, such as refrigeration, air-conditioning, chillers, and heat pumps, as well as in applications as foam blowing agents, solvents, aerosol propellants, fire extinguishants, and sterilants.
    Type: Application
    Filed: June 25, 2013
    Publication date: October 31, 2013
    Inventors: VELLIYUR NOTT MALLIKARJUNA RAO, Mario Joseph Nappa, Barbara Haviland Minor, Thomas Joseph Leck, Nandini C. Mouli
  • Patent number: 8273853
    Abstract: Disclosed is a process for the preparation of emulsifiers E1 which are obtained by (a) reacting a polyol with propylene oxide or a mixture of ethylene oxide and propylene oxide, to give an intermediate Z1, (b) reacting the intermediate Z1 with epichlorohydrin, forming an intermediate Z2, (c) reacting the intermediate Z2 with an adduct of ethylene oxide or a mixture of ethylene oxide and propylene oxide, with a C1-C22 monoalcohol, provided that on average at least one epoxide function of the intermediate Z2 is reacted and on average at least one epoxide function originating from the intermediate Z2 is retained. Compounds E1 are suitable as emulsifiers for preparing aqueous emulsions or dispersions of epoxy resins.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: September 25, 2012
    Assignee: Cognis IP Management GmbH
    Inventors: Paul Birnbrich, Hans-Josef Thomas, Giorgio Sabbadini, Ulrich Nagorny, Georg Bourscheidt
  • Publication number: 20120085110
    Abstract: The present invention relates to compositions comprising at least one fluoroolefin and an effective amount of stabilizer that may be a terpene, terpenoid or fullerene; or a mixture of a terpene, terpenoid or fullerene with other stabilizers. The stabilized compositions may be useful in cooling apparatus, such as refrigeration, air-conditioning, chillers, and heat pumps, as well as in applications as foam blowing agents, solvents, aerosol propellants, fire extinguishants, and sterilants.
    Type: Application
    Filed: December 14, 2011
    Publication date: April 12, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: JON LEE HOWELL, Velliyur Nott Mallikarjuna Rao, Thomas J. Leck, Barbara Haviland Minor, Mario Joseph Nappa, Nandini C. Mouli, Ekaterina N. Swearingen, Andrew Edward Feiring
  • Patent number: 6350395
    Abstract: A stabilizer composition comprising a) an N-alkyl morpholine and b) a straight-chain or cyclic aliphatic amine containing no hetroatoms other than N with a boiling point of at least 150° C. The stabilizer composition is useful for stabilizing a halogenated hydrocarbon against degradation.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: February 26, 2002
    Assignee: The Dow Chemical Company
    Inventor: Marius Kuemin
  • Patent number: 5932775
    Abstract: To avoid the formation of acidity in an F125 containing olefins, a radical scavenger and/or an acidity scavenger is added to it.
    Type: Grant
    Filed: November 4, 1997
    Date of Patent: August 3, 1999
    Assignee: Elf Atochem S.A.
    Inventors: Eric Lacroix, Jean-Marc Sage
  • Patent number: 5084199
    Abstract: The compound 1,1,2,2,3,3-hexafluorocyclopentane and mixtures thereof with alcohols, ethers, esters, ketones, nitromethane, and halogenated hydrocarbons are disclosed; as is a process for cleaning a solid surface which comprises treating the surface with said compound or said mixtures. Binary mixtures of 1,1,2,2,3,3-hexafluorocyclopentane either with about 27 to 35 weight percent methanol, or with about 21 to 29 weight percent ethanol are disclosed as azeotrope or azeotrope-like compositions and are particularly suited for use where solvent recovery and reuse is practiced.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: January 28, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Robert D. Anton
  • Patent number: 4469520
    Abstract: Metal pigments when combined with methylchloroform are stabilized by the addition of small amounts of aromatic diepoxides. Other known stabilizers against metals or the active of light and heat may be incorporated.
    Type: Grant
    Filed: January 9, 1984
    Date of Patent: September 4, 1984
    Assignee: The Dow Chemical Company
    Inventors: Nobuyuki Ishibe, Warren F. Richey, Milton S. Wing
  • Patent number: 4392000
    Abstract: The invention relates to compositions of chlorinated solvents such as 1,1,1-trichloroethane, stabilized by means of a heterocyclic compound containing oxaziridine units, such as 2-tert.-butyloxaziridine.
    Type: Grant
    Filed: October 19, 1981
    Date of Patent: July 5, 1983
    Assignee: Solvay & Cie.
    Inventors: Andre' Ryckaert, Michel Servais
  • Patent number: 4362573
    Abstract: A solvent composition comprising 1,1,1-trichloroethane and a stabilizing amount of an epoxide of formula ##STR1## wherein R.sub.1 and R.sub.2 are hydrogen, alkyl of 1 to 4 carbon atoms, phenyl or benzyl,R.sub.3 is hydrogen or alkyl of 1 to 4 carbon atoms,R.sub.4 is alkyl of 1 to 4 carbon atomsand n is 0 or 1.Preferably the or each alkyl group contains 1 or 2 carbon atoms; examples of useful epoxides are ethyl trans-2,3-epoxybutyrate, ethyl 3,4-epoxy-3-methylvalerate and ethyl beta-methyl-beta-phenylglycidate.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: December 7, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventors: William C. Mackrodt, Richard B. Jones, Neil Winterton
  • Patent number: 4351973
    Abstract: A stabilized methylchloroform for use in vapor degreasing which is stable in the presence of metals which contains pyrazine, dimethoxypropane, an acetylenic alcohol and a nitroalkane or a methylfuran. Such combination prevents corrosion of aluminum, iron, copper and zinc and the decomposition of the solvent.
    Type: Grant
    Filed: October 6, 1980
    Date of Patent: September 28, 1982
    Assignee: The Dow Chemical Company
    Inventors: Nobuyuki Ishibe, Warren F. Richey