Patents Assigned to Elf Atochem
  • Patent number: 5723562
    Abstract: Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form peroxy-containing polymers, which in turn can be used to prepare block and graft copolymers, have the following Formula I: ##STR1## R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, X, Y.sup.1, Y.sup.2, Y.sup.3, Z.sup.1, Z.sup.2, x, y and z are as defined in the Summary of the Invention. The compounds of Formula I may be prepared by reacting hydroxy-containing tertiary hydroperoxides with diacid halides, phosgene, dichloroformates, diisocyanates, anhydrides and lactones to form the functionalized peroxides. These reaction products may be further reacted, if desired, with dialcohols, diamines, aminoalcohols, epoxides, epoxy alcohols, epoxy amines, diacid halides, dichloroformates and diisocyanates to form additional functionalized peroxides.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: March 3, 1998
    Assignee: Elf Atochem North America, Inc.
    Inventor: Daryl L. Stein
  • Patent number: 5720947
    Abstract: This composition for deodorizing animal faeces such as liquid manure, in particular liquid pig manure, is characterized in that it comprises: (a) at least one normal superphosphate; (b) at least one compound chosen from undecylenic acid, its esters and its polyoxyalkyle-mated esters; and optionally (c) sodium perborate. The constituent (a) is in particular a normal superphosphate containing approximately 16-18% by weight of P.sub.2 O.sub.5. The constituent (b) is in particular methyl undecylenate.The composition is formulated, for example, order to be able to treat animal faeces with up to approximately 10,000 ppm of the constituent (a); up to approximately 1000 ppm of the constituent (b); and up to approximately 500 ppm of active O.sub.2 form the constituent (c), these amounts being calculated with respect to the weight of the animal faeces to be treated.
    Type: Grant
    Filed: May 15, 1996
    Date of Patent: February 24, 1998
    Assignee: Elf Atochem S. A.
    Inventors: Jacques Basset, Henri-Jean Caupin, Francis Wable
  • Patent number: 5721310
    Abstract: Process for reducing the content of residual monomers, expressed as total VOC lower than 600 ppm and deriving from the monomers utilized to obtain the emulsion lower than 100 ppm; having an amount of wet coagula lower or equal to 500 ppm after wet filtering on 125 micron filter of the emulsion at the outlet after the various dropping phases, in polymerizations and copolymerizations in dispersion or emulsion in aqueous phase based on acrylic monomers, characterized in that it comprises as redox couple the utilization of a reducing agent selected from ascorbic acid or an aldehyde having a number of carbon atoms equal to or higher than 4 and containing at least a salifiable hydrogen, organic or inorganic, or its salts and the inorganic salifiable hydrogen being added to a carboxylic group; the aldehyde reducing agent or its salts being soluble in water for at least 5% by weight, preferably 10% by weight; and from an oxidizing agent consisting of an organic hydroperoxide in aqueous solution, excluding those solub
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: February 24, 1998
    Assignee: Elf Atochem Italia S.r.l.
    Inventors: Carlo Sempio, Leo Mario Saija, Daniele Becchi, Ezio Montessoro
  • Patent number: 5719316
    Abstract: The subject-matter of the invention is a process for the preparation of cyclododecanone oxime by photonitrosation of cyclododecane in the presence of hydrochloric acid, characterized in that the nitrosing agent is trichloronitrosomethane.
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: February 17, 1998
    Assignee: Elf Atochem S.A.
    Inventor: Jean Ollivier
  • Patent number: 5719096
    Abstract: This invention relates to novel peroxide blends which are liquid at 25.degree. C. and lower, their method of preparation and their use in curing peroxide crosslinkable polymers.The blend is a mixture of the meta isomers or the meta and para isomers of the compounds of Formulae I, II and III and optionally Formula IV (all as defined herein) in such proportions that the composition provides a liquid mixture at 25.degree. C. or below which has a high crosslinking efficiency for polymeric materials.
    Type: Grant
    Filed: January 4, 1995
    Date of Patent: February 17, 1998
    Assignee: ELF Atochem North America, Inc.
    Inventors: Robert Thaddeus Kazmierczak, Ronald Edward MacLeay
  • Patent number: 5718817
    Abstract: The present invention comprises a curable composition comprising:(i) a blocked reactive component comprising a blocked isocyanate or a blocked isothiocyanate;(ii) a functional compound containing reactive hydrogen;(iii) a triorganotin catalyst for promoting the reaction of the blocked reactive component with the functional compound.The composition may also be admixed with water. The invention also relates to a method for curing a blocked isocyanate or blocked isothiocyanate at a temperature below about 150.degree. C. which comprises combining a triorganotin compound with the blocked reactive component and functional compound and heating at a temperature less than about 150.degree. C. to obtain a cured urethane or thiourethane.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: February 17, 1998
    Assignee: Elf Atochem North America, Inc.
    Inventors: Emily Carol Bossert, Wayne Ranbom, William Albert Larkin
  • Patent number: 5719314
    Abstract: This process for the preparation of isobornyl (meth)acrylate comprises the reaction of (meth)acrylic acid with camphene in the presence of a solid zirconium-based superacid as catalyst.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: February 17, 1998
    Assignee: Elf Atochem S.A.
    Inventor: Alain Riondel
  • Patent number: 5714651
    Abstract: A method for extending the life of catalyst used to fluorinate olefins, e.g. a supported Lewis acid catalyst in the catalytic hydrofluorination of vinylidene chloride by conducting the hydrofluorination in the presence of a polymerization inhibitor for the vinylidene chloride.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: February 3, 1998
    Assignee: Elf Atochem North America, Inc.
    Inventors: Maher Yousef Elsheikh, Michael Sheppard Bolmer
  • Patent number: 5712041
    Abstract: The invention relates to a material comprising a film covered with silicon oxide and a polyolefin film such that the binder arranged between the silicon oxide and the polyolefin film is a thermoplastic resin containing at least one hydroxyl functional group.This material is useful for manufacturing food packagings in the form of cartons.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: January 27, 1998
    Assignee: Elf Atochem S.A.
    Inventors: Patrice Breant, Philippe Tordjeman
  • Patent number: 5710213
    Abstract: Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form peroxy-containing polymers, which in turn can be used to prepare block and graft copolymers, have the following Formula I: ##STR1## R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, X, Y.sup.1, Y.sup.2, Y.sup.3, Z.sup.1, Z.sup.2, x, y and z are as defined in the Summary of the Invention. The compounds of Formula I may be prepared by reacting hydroxy-containing tertiary hydroperoxides with diacid halides, phosgene, dichloroformates, diisocyanates, anhydrides and lactones to form the functionalized peroxides. These reaction products may be further reacted, if desired, with dialcohols, diamines, aminoalcohols, epoxides, epoxy alcohols, epoxy amines, diacid halides, dichloroformates and diisocyanates to form additional functionalized peroxides.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: January 20, 1998
    Assignee: Elf Atochem North America, Inc.
    Inventor: Daryl L. Stein
  • Patent number: 5710210
    Abstract: Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form peroxy-containing polymers, which in turn can be used to prepare block and graft copolymers, have the following Formula I: ##STR1## R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, X, Y.sup.1, Y.sup.2, Y.sup.3, Z.sup.1, Z.sup.2, x, y and z are as defined in the Summary of the Invention. The compounds of Formula I may be prepared by reacting hydroxy-containing tertiary hydroperoxides with diacid halides, phosgene, dichloroformates, diisocyanates, anhydrides and lactones to form the functionalized peroxides. These reaction products may be further reacted, if desired, with dialcohols, diamines, aminoalcohols, epoxides, epoxy alcohols, epoxy amines, diacid halides, dichloroformates and diisocyanates to form additional functionalized peroxides.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: January 20, 1998
    Assignee: Elf Atochem North America, Inc.
    Inventor: Daryl L. Stein
  • Patent number: 5708091
    Abstract: A multifunctional anionic polymerization initiator which is in the form of a star-shaped polymer, and which is soluble in a nonpolar medium and is substantially free of residual double bonds. The initiator is denoted by the general formula (PA).sub.a N.sup.n- nLi.sup.+. PA is a polymer block of a vinylaromatic or diene monomer A. The variable "a" is the number of branches in the block PA. N is a crosslinked core comprising no or practically no residual double bonds and has the formula (PMc)(RLi).sub.p. Mc is a monomer containing at least two polymerizable double bonds per molecule. PMc is a crosslinked core of at least one polymerized monomer Mc, containing 3 to 30% of residual double bonds in relation to the initial double bonds originating from the monomer Mc. R is an alkyl, aryl, arylalkyl, alkylaryl, cycloalkyl, or alkenyl. The variable "p" is the number of residual double bonds in PMc which are neutralized by RLi. The variable "n" is the number of anionic sites present in the crosslinked core N.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: January 13, 1998
    Assignee: Elf Atochem S.A.
    Inventors: Pierre Lutz, Paul Rempp, David Rein, Philippe Heim, Pascal Nicol, Bruno Vuillemin
  • Patent number: 5708062
    Abstract: The invention relates to improved bitumen compositions including:(A) 100 parts of bitumen(B) 0.1 to 10 parts of a copolymer of an alpha-olefin, of an unsaturated epoxide and of an ester of unsaturated carboxylic acid(C) 0.1 to 10 parts of a copolymer of an alpha-olefin and of an ester of unsaturated carboxylic acid,(D) 0 to 10 parts of a thermoplastic elastomer(E) 0 to 10 parts of a polymer which is reactive with (B)(F) 0 to 10 parts of an ethylene/vinyl acetate copolymer.These bitumens are stable when stored and resist rutting.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: January 13, 1998
    Assignees: Elf Atochem S.A., Enterprise Jean Lefebvre
    Inventors: Jerome Maillet, Jacques Komornicki, Yoshiyuki Miyaki, Hiroshi Mohri, Satoshi Tada, Patrice Perret, Sabine Gazeau, Bernard Brule, Kentaro Shiojiri
  • Patent number: 5708081
    Abstract: The invention relates to polymer compositions of high impact strength, comprising a vinylaromatic polymer and a rubber, and to a process for their manufacture.These compositions are obtained by virtue of the use of two polybutadienes whose viscosities, measured at 25.degree. C. at a concentration of 5% in styrene, are, respectively, between 120 and 350 centipoises in the case of one and between 30 and 90 centipoises in the case of the other.
    Type: Grant
    Filed: June 12, 1995
    Date of Patent: January 13, 1998
    Assignee: Elf Atochem S. A.
    Inventors: Tarek Sarraf, Thomas Edward Jenkins
  • Patent number: 5707497
    Abstract: A process for the separation of hydrogen fluoride (HF) and of difluoromethane (F32) by fractional distillation and/or condensation, in at least one stage, including in at least one stage obtaining a stream whose HF and F32 contents correspond.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: January 13, 1998
    Assignee: Elf Atochem S.A.
    Inventors: Jean-Michel Galland, Dominique Rouzies
  • Patent number: 5708088
    Abstract: The present invention relates to a multiphase thermoplastic composition based on polyamide resin containing at least one ethylene/alkyl (meth) acrylate/unsaturated epoxide terpolymer.
    Type: Grant
    Filed: October 23, 1995
    Date of Patent: January 13, 1998
    Assignee: Elf Atochem S.A.
    Inventors: Marius Hert, Patrice Perret
  • Patent number: 5705718
    Abstract: To remove the unsaturated impurities (in particular 1-chloro-2,2-difluoroethylene and polyfluoropropenes) present in crude 1,1,1,2-tetrafluoroethane (F134a), a gaseous mixture of crude F134a, of hydrofluoric acid and of chlorine is treated in gaseous phase in the presence of a fluorination catalyst at a temperature of between 100.degree. and 300.degree. C. and at a pressure between atmospheric pressure and 2.5 MPa, the molar ratio HF/F134a being between 0.05 and 0.5 and the molar ratio Cl.sub.2 /F134a between 0.0001 and 0.1.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: January 6, 1998
    Assignee: Elf Atochem S.A.
    Inventors: Bernard Cheminal, Andre Lantz
  • Patent number: 5705688
    Abstract: Acrylic acid obtained by catalytic oxidation of propylene, extracted by countercurrent washing of the reaction gases which at least one hydrophobic heavy solvent in an extraction column (C1) is purified.
    Type: Grant
    Filed: July 17, 1996
    Date of Patent: January 6, 1998
    Assignee: Elf Atochem S.A.
    Inventors: Michel Fauconet, Marc Esch, Yves Samuel, Denis Laurent
  • Patent number: 5703161
    Abstract: The invention relates to a polymer mixture which contains (A) 50 to 85 wt. % of a polyether block amide consisting of 30 to 60 wt. % of polyamide-12, polyamide-11 and/or polyamide-12,12 blocks and 70 to 40 wt. % of polyethylene glycol blocks,(B) 10 to 40 wt. % of a polyether block amide consisting of 65 to 85 wt. % of polyamide-12, polyamide-11 and/or polyamide-12,12 blocks and 35 to 15 wt. % of polyethylene glycol blocks, and(C) 5 to 40 wt. % of a poly(ethylene-co-vinylacetate-g-maleic anhydride) polymer consisting of 75 to 95 wt. % of ethylene, 5 to 25 wt. % of vinylacetate and 0.1 to 2 wt. % of maleic anhydride,wherein the data relating to wt. % for the constituents (A), (B) and (C) are with reference to the total amount of polymer mixture. The invention also relates to films produced from this polymer mixture and the use of these films to produce waterproof, water vapor permeable, wind resistant textile composite materials, dressing materials and hygiene items.
    Type: Grant
    Filed: August 27, 1996
    Date of Patent: December 30, 1997
    Assignee: Elf Atochem Deutschland GmbH
    Inventors: Roland Eugen Steenblock, Norbert Franz Kock, Detlef Herbert Fiedler
  • Patent number: RE35730
    Abstract: A process and apparatus for regenerating a plating bath comprising trivalent chromium cations (a trivalent chromium bath). The bath can be continuously, or more preferably, periodically with an ion exchange resin, preferably a cation exchange resin. A useful apparatus comprises a plating tank containing a trivalent chromium plating bath in communication with an ion exchange bed continuing ion exchange resin.
    Type: Grant
    Filed: December 4, 1995
    Date of Patent: February 17, 1998
    Assignee: Elf Atochem North America, Inc.
    Inventor: Bradley David Reynolds