Acyclic Divalent Chalcogen Single Bonded Directly To The Ring Phosphorus (e.g., Cyclic Phosphites, Etc.) Patents (Class 558/78)
  • Patent number: 10919923
    Abstract: An organic phosphorus-based compound which satisfies the following requirements (i) to (viii) and is represented by the following formula (1): (i) the organic purity should be not lower than 98%; (ii) the solubility in 20° C. water should be not higher than 0.1 g/100 g of water; (iii) the total halogen component content should be not higher than 1,000 ppm; (iv) the total volatile organic matter content should be not higher than 800 ppm; (v) the ? pH value should be not larger than 1.0; (vi) the volume standard median diameter should be not larger than 30 ?m; (vii) the maximum particle diameter should be not larger than 200 ?m; and (viii) the standard deviation represented by the following formula should be not larger than 20 ?m. Standard deviation=(d84%+d16%)/2; wherein d84%: particle diameter at a point where the cumulative curve becomes 84% (?m), and d16%: particle diameter at a point where the cumulative curve becomes 16% (?m).
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: February 16, 2021
    Assignee: TEIJIN LIMITED
    Inventors: Katsuhiro Yamanaka, Kenta Imazato, Naoshi Takahashi
  • Patent number: 10239901
    Abstract: The present invention relates to processes for producing organophosporous compositions having low acid content as well as processes for reprocessing partially degraded organophosporous compositions that contain high levels of phosphorous acid. In one embodiment, a process comprises: (a) receiving a solid organophosphite compound that has been recrystallized or triturated, wherein the solid organophosphite compound comprises phosphorous acid; (b) dissolving the solid organophosphite compound in an organic solvent; (c) treating the solution with a weakly basic adsorbent; and (d) collecting the treated organophosphite solution, wherein the acid content of the organophosphite following step (d) is 30 ppm or less.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: March 26, 2019
    Assignee: Dow Technology Investments LLC
    Inventors: Marinus A. Bigi, Michael A. Brammer, Glenn A. Miller
  • Patent number: 10239900
    Abstract: The present invention relates to processes for producing organophosporous compositions having low acid content as well as processes for reprocessing partially degraded organophosporous compositions that contain high levels of phosphorous acid. In one embodiment, a process comprises: (a) receiving a solid organophosphite compound that has been recrystallized or triturated, wherein the solid organophosphite compound comprises phosphorous acid; (b) dissolving the solid organophosphite compound in a an aromatic hydrocarbon solvent in the absence of water and free amine, wherein the hydrocarbon solvent comprises an aromatic hydrocarbon, a saturated aliphatic hydrocarbon, or a mixture thereof; and (c) removing undissolved phosphorous acid from the solution, wherein the acid content of the organophosphite following step (c) is 30 ppm or less.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: March 26, 2019
    Assignee: Dow Technology Investments LLC
    Inventors: Marinus A. Bigi, Michael A. Brammer, Glenn A. Miller
  • Patent number: 10011619
    Abstract: Universally usable process for reducing the chlorine content of organotetraphosphites.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: July 3, 2018
    Assignee: EVONIK DEGUSSA GMBH
    Inventors: Katrin Marie Dyballa, Robert Franke
  • Patent number: 9982001
    Abstract: Bisphosphites having an unsymmetric central biaryl unit.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: May 29, 2018
    Assignee: EVONIK DEGUSSA GMBH
    Inventors: Katrin Marie Dyballa, Robert Franke, Dirk Fridag, Armin Börner, Detlef Selent
  • Patent number: 9046196
    Abstract: Pipe articles and methods of forming the same are described herein. The methods generally include providing an ethylene based polymer; contacting the ethylene based polymer with a secondary stabilizer including a diphosphite to form a modified polyethylene; and forming the modified polyethylene into a pipe.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: June 2, 2015
    Assignee: FINA TECHNOLOGY, INC.
    Inventors: Brian Cole, John Ashbaugh
  • Publication number: 20140350280
    Abstract: Disclosed herein are methods for recovering diphosphite-containing compounds from mixtures comprising organic mononitriles and organic dinitriles, using liquid-liquid extraction. Also disclosed are treatments to enhance extractability of the diphosphite-containing compounds.
    Type: Application
    Filed: November 20, 2012
    Publication date: November 27, 2014
    Applicant: INVISTA North America S.a.r.l.
    Inventor: William J. Tenn, III
  • Publication number: 20140316153
    Abstract: Disclosed herein are methods for recovering diphosphite-containing compounds from mixtures comprising organic mononitriles and organic dinitriles, using liquid-liquid extraction. Also disclosed are pre-treatments to enhance extractability of the diphosphite-containing compounds.
    Type: Application
    Filed: November 20, 2012
    Publication date: October 23, 2014
    Applicant: INVISTA North America S.a.r.l.
    Inventor: William J. Tenn
  • Publication number: 20140309423
    Abstract: The subject matter of the present invention is a plurality of products and the use thereof as a catalytically active composition in a method for producing aldehydes.
    Type: Application
    Filed: October 24, 2012
    Publication date: October 16, 2014
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Andrea Christiansen, Robert Franke, Dirk Fridag, Dieter Hess, Burkard Kreidler, Detlef Selent, Armin Boerner
  • Publication number: 20140288322
    Abstract: Residual wash solvent, e.g., ethyl acetate, is removed from polyphosphite, e.g., bisphosphite, crystals by a process comprising the steps of: A. Mixing the polyphosphite crystals and residual wash solvent with a secondary alcohol, e.g., isopropyl alcohol (IPA), to form a mixture of polyphosphite crystals, residual wash solvent and secondary alcohol, and B. Drying the mixture to remove the residual wash solvent and secondary alcohol to a content of less than 0.5 wt % based on the weight of the polyphosphite crystals.
    Type: Application
    Filed: October 25, 2012
    Publication date: September 25, 2014
    Inventors: Glenn A. Miller, Pramod Dalvi, Ravindrakumar N. Raval
  • Patent number: 8796389
    Abstract: The present invention relates to a method for thermal crosslinking of adhesives and also to products produced with these adhesives. An object of the invention is to provide a method for thermal crosslinking of adhesives where the crosslinking is covalent and (initiated by a chemical or physical stimulus) reversible. As and when required, the crosslinking method can also be configured to result in a covalent, irreversible network.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: August 5, 2014
    Assignee: TESA SE
    Inventors: Alexander Prenzel, Sarah Bamberg
  • Patent number: 8796481
    Abstract: The present invention relates to a crystalline non-solvated form of 6,6?-[[3,3?,5,5?-tetrakis(1,1-dimethylethyl)-[1,1?-biphenyl]-2,2?-diyl]bis(oxy)]bis-dibenzo[d,f][1,3,2]-dioxaphosphepine (compound I) and toluene-solvates and acetone-solvates thereof.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: August 5, 2014
    Assignee: BASF SE
    Inventors: Ulrich Berens, Holger Ganz, Tiziana Chiodo
  • Publication number: 20130324756
    Abstract: The invention relates to a process for producing 6,6?-[(3,3?-di-tert-butyl-5,5?-dimethoxy-1,1?-biphenyl-2,2?diyl)bis(oxy)]bis(dibenzo[d,f][1,3,2]dioxaphosphepine), abbreviated to biphephos (see formula 1), with low chlorine content
    Type: Application
    Filed: December 22, 2011
    Publication date: December 5, 2013
    Applicant: Evonik Oxeno GmbH
    Inventors: Burkard Kreidler, Dirk Fridag, Bernhard Schemmer, Bjoern Wechsler, Andrea Christiansen, Doris Neumann
  • Patent number: 8598382
    Abstract: A sterically hindered phenol and phosphite based compound represented by the following formula: and its use as an antioxidant in a wide range of materials including, but not limited to, food, plastics, elastomers, composites and petroleum based products is disclosed herein.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: December 3, 2013
    Assignee: Polnox Corporation
    Inventors: Ashok L. Cholli, Rajesh Kumar
  • Publication number: 20130184478
    Abstract: The present invention relates to a crystalline non-solvated form of 6,6?-[[3,3?,5,5?-tetrakis(1,1-dimethylethyl)-[1,1?-biphenyl]-2,2?-diyl]bis(oxy)]bis-dibenzo[d,f][1,3,2]-dioxaphosphepine (compound I) and toluene-solvates and acetone-solvates thereof.
    Type: Application
    Filed: December 27, 2012
    Publication date: July 18, 2013
    Applicant: BASF SE
    Inventor: BASF SE
  • Publication number: 20130041171
    Abstract: A sterically hindered phenol and phosphite based compound represented by the following formula: and its use as an antioxidant in a wide range of materials including, but not limited to, food, plastics, elastomers, composites and petroleum based products is disclosed herein.
    Type: Application
    Filed: August 13, 2012
    Publication date: February 14, 2013
    Applicant: Polnox Corporation
    Inventors: Ashok L. Cholli, Rajesh Kumar
  • Publication number: 20120197025
    Abstract: The invention relates to the synthesis of tetraphenol-substituted structures, in particular meta-substituted xylenes. Said tetraphenol-type structures are reacted to obtain organic phosphorus compounds, in particular organophosphites. The invention further relates to the production of catalytically active compositions which contain transition metals in addition to the aforementioned organic phosphorus compounds. According to another subject matter of the invention, said catalytically active compositions are used in chemical reactions with small molecules, e.g. HCN, CO, hydrogen, and amines.
    Type: Application
    Filed: August 26, 2010
    Publication date: August 2, 2012
    Applicant: Evonik Oxeno GmbH
    Inventors: Andrea Christiansen, Robert Franke, Dirk Fridag, Dieter Hess, Burkard Kreidler, Dieter Vogt, Laura Bini, Michele Janssen, Bart Hamers
  • Publication number: 20120172503
    Abstract: The invention pertains to an amorphous solid modification of bis(2,4-dicumylphenyl)pentaerythritol diphosphite, to a process for preparing said modification and the use thereof for stabilizing organic materials against oxidative, thermal or light-induced degradation.
    Type: Application
    Filed: March 12, 2012
    Publication date: July 5, 2012
    Inventor: DANIEL THIBAUT
  • Patent number: 8003816
    Abstract: The invention relates to a bisphosphite of the formula I where X=a divalent substituted or unsubstituted bisalkylene or bisarylene radical, Y=a divalent substituted or unsubstituted bisarylene or bisalkylene radical, Z=oxygen or NR9, and R1, R2, R3, R4 are identical or different, substituted or unsubstituted, linked, unlinked or fused aryl or heteroaryl radicals and R9 is hydrogen or a substituted or unsubstituted alkyl or aryl radical, a process for preparing it and also the use of this phosphite in catalysis in particular in the catalytic hydroformylation of olefins or organic compounds having C—C double bonds.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: August 23, 2011
    Assignee: Evonik Oxeno GmbH
    Inventors: Detlef Selent, Armin Boerner, Burkard Kreidler, Dieter Hess, Klaus-Diether Wiese
  • Patent number: 7745655
    Abstract: The present invention relates to a process for preparing bisphosphites which contain dioxaphosphorinone units.
    Type: Grant
    Filed: November 28, 2002
    Date of Patent: June 29, 2010
    Assignee: Oxeno Olefinchemie GmbH
    Inventor: Cornelia Borgmann
  • Patent number: 7728162
    Abstract: A novel process for preparing in a high purity and in a high yield phosphorus compounds having a phosphate-phosphonate bond within one molecule, along with only a small amount of a by-product, without being restricted by the kind of a phosphonate having an alcoholic hydroxyl group which is a raw material, without using a catalyst such as magnesium chloride, but only using a nitrogen-containing basic compound.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: June 1, 2010
    Assignee: Daihachi Chemical Industry Co., Ltd.
    Inventors: Kazuo Fujimoto, Sakiko Tanaka
  • Publication number: 20100036143
    Abstract: The invention relates to a bisphosphite of the formula I where X=a divalent substituted or unsubstituted bisalkylene or bisarylene radical, Y=a divalent substituted or unsubstituted bisarylene or bisalkylene radical, Z=oxygen or NR9, and R1, R2, R3, R4 are identical or different, substituted or unsubstituted, linked, unlinked or fused aryl or heteroaryl radicals and R9 is hydrogen or a substituted or unsubstituted alkyl or aryl radical, a process for preparing it and also the use of this phosphite in catalysis in particular in the catalytic hydroformylation of olefins or organic compounds having C—C double bonds.
    Type: Application
    Filed: November 13, 2007
    Publication date: February 11, 2010
    Applicant: Evonik Oxeno GmbH
    Inventors: Detlef Selent, Armin Boerner, Burkard Kreidler, Dieter Hess, Klaus-Diether Wiese
  • Patent number: 7342060
    Abstract: A method is disclosed for the production of pentaerythritol diphosphites of high spiro isomer content. The pentaerythritol diphosphites are produced via sequential transesterification of pentaerythritol with a monophosphite followed by a substituted phenol or other alcohol, wherein the transesterification reactions are carried out under controlled conditions of temperature and pressure. The unique reaction conditions result in intermediate and final pentaerythritol diphosphites of high spiro isomer content and high total yield of the diphosphites.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: March 11, 2008
    Assignee: Dover Chemical Corporation
    Inventor: Carroll W. Larke
  • Patent number: 7294729
    Abstract: A novel bis-chelating composition characterized by formula I: wherein M is a Group VB element; R1 and R2 are each independently selected from hydrogen and monovalent hydrocarbyl radicals; or R1 and R2 are bonded together to form a diradical; or one of R1 or R2 is hydrogen or a monovalent hydrocarbyl radical, while the other of R1 or R2 is a hydrocarbyl radical bonded to an atom in Ar; wherein Ar is selected from 1,2-arylenes; Q is selected from 1,2-arylenes, 2,2?-bisarylenes and alkyl diradicals; and W is selected from II, III, IV, or V: wherein M is as defined hereinbefore; each R is independently selected from hydrogen and monovalent hydrocarbyl radicals; X is selected from alkyl and aryl diradicals; Ar1 and Ar2 are each independently selected from 1,2-arylenes;Ar3 and Ar4 are each independently selected from monovalent aryl radicals; and n in formula IV is 0 or 1.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: November 13, 2007
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Wei-Jun Peng, Johnathan E Holladay
  • Patent number: 7217828
    Abstract: Phosphinines of formula (I) can be combined with metal salts to prepare hydroformylation catalysts. The phosphinine complexes have two phosphorus centers that may be substituted with a variety of hetero atoms or alkyl substituents to modify the ligand characteristics of the phosphinine. Phosphinine metal complexes are employed under normal hydroformylation reaction conditions. The preparatory routes to the phosphinine ligands of formula (I) allow for their convenient synthesis.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: May 15, 2007
    Assignee: OXENO Olefinchemie GmbH
    Inventors: Detlef Selent, Armin Boerner, Renat Kadyrov, Cornelia Borgmann, Dieter Hess, Klaus-Diether Wiese, Dirk Roettger
  • Patent number: 7196230
    Abstract: A novel organophosphorus composition and synthesis thereof, the composition being characterized by one phosphite moiety, one phosoxophite moiety, and a plurality of sterically bulky substituents. The novel composition finds utility as a ligand in Group VIII transition metal phosoxophite complex catalysts and complex catalyst precursors that are used in carbonylation processes, preferably, hydroformylation processes. Additionally, there is disclosed a novel method of preparing a phosphoromonochloridite composition that finds utility as a precursor to the novel phosoxophite composition.
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: March 27, 2007
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Wei-Jun Peng, David Robert Bryant
  • Patent number: 7161020
    Abstract: Phosphites of the formula I and phosphite-metal complexes, their preparation and their use in catalytic reactions, in particular in processes for the hydroformylation of olefins, are described.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: January 9, 2007
    Assignee: Oxeno Olefinchemie GmbH
    Inventors: Detlef Selent, Armin Boerner, Cornelia Borgmann, Dieter Hess, Klaus-Diether Wiese
  • Patent number: 7009068
    Abstract: Phosphites of the formula I or II and their metal complexes, their preparation and the use of the phosphites as ligands in catalytic reactions, in particular in processes for the hydroformylation of olefins, are described.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: March 7, 2006
    Assignee: Oxeno Olefinchemie GmbH
    Inventors: Reinhard Schmutzler, Ion Neda, Christine Kunze, Armin Börner, Detlef Selent, Cornelia Borgmann, Dieter Hess, Klaus-Diether Wiese
  • Publication number: 20040192651
    Abstract: Compounds of Formula I, their preparation and synthetic intermediates, and their use in the synthesis of prodrugs: 1
    Type: Application
    Filed: October 31, 2003
    Publication date: September 30, 2004
    Inventors: K. Raja Reddy, William Craigo, Zhili Sun, Serge Boyer, Bheemarao G. Ugarkar
  • Publication number: 20040014852
    Abstract: A novel antioxidant has the advantages of both the hindered phenols and the phosphite antioxidant is prepared from phosphorus trichloride and 2,5-di-tert-butylhydroquinone, such as tetrakis-(2,5-di-tert-butyl-4-hydroxyphenyl)-2,5-di-tert-butyl-hydroquinonediyl diphosphite.
    Type: Application
    Filed: July 17, 2002
    Publication date: January 22, 2004
    Applicant: Chung-Shan Institute of Science & Technology
    Inventors: Tseng-Rong Wu, Pin-Yang Yu, Yi-Chin Lin, Te-Chuan Chang
  • Patent number: 6646148
    Abstract: Processes for hydrocyanation of nonconjugated aliphatic monoolefins or monoolefins conjugated to an ester group utilizing a catalyst precursor composition comprising an unsymmetrical bidentate phosphite ligand and zero-valent nickel, preferably in the presence of a Lewis acid promoter, to produce a terminal organo-nitrile. Catalyst precursor compositions are also disclosed.
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: November 11, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Kristina Ann Kreutzer, Wilson Tam
  • Patent number: 6570033
    Abstract: A bisphosphite of the formula I wherein R1, R2, R3 and R4 are each hydrogen, an aliphatic, alicyclic, aliphatic-alicyclic, aromatic, aromatic—aromatic, aliphatic-aromatic hydrocarbon or heterocyclic or aliphatic-heterocyclic group having from 1 to 50 carbon atoms, F, Cl, Br, I, —CF3, —OR7, —COR7, —CO2R7, —CO2M, —SR7, —SO2R7, —SOR7, —SO3R7, —SO3M, —CO2NR7R8, NR7R8, N═CR7R8, NH2, where R1 to R4 are identical or different and may be covalently linked to one another; R7 and R8 are each hydrogen, a substituted or unsubstituted, aliphatic or aromatic hydrocarbon radical having from 1 to 25 carbon atoms, and may be identical or different; M is an alkali metal, alkaline earth metal, ammonium or phosphonium ion; Q is a substituted or unsubstituted divalent aliphatic, alicyclic, aliphatic-alicyclic, aromatic, aliphatic-aromatic hydrocarbon, heterocyclic or aliphatic-heterocyclic radical having from 1 to 50 carbon atoms whe
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: May 27, 2003
    Assignee: Oxeno Olefinchemie GmbH
    Inventors: Dirk Röttger, Dieter Hess, Klaus-Diether Wiese, Cornelia Borgmann, Armin Börner, Detlef Selent, Reinhard Schmutzler, Christine Kunze
  • Patent number: 6541549
    Abstract: A non-xenoestrogenic phosphorus-containing stabilizer for organic materials is disclosed wherein the stabilizer is selected from the group consisting of phosphorus-containing compounds of the structures wherein y in an integer of from 6 to 20, and where Z is a linking group, m is 0 or 1, n is an integer of at least 2, the asterisks are independently selected terminal groups, R1, R2, R3, R4, R5, R6, R7, and R8 are independently selected from the group consisting of hydrogen, alkyl groups, aralkyl groups, or halogen groups and Q is selected from the group consisting of where R11 is alkyl or aralkyl, and
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: April 1, 2003
    Assignee: Crompton Corporation
    Inventors: Scott R. Archibald, Tracy L. Coffin-Werner
  • Publication number: 20030055188
    Abstract: Disclosed are cyclic phosphate esters of fumarate—or maleic acids suitable for use as a comonomer, capable of being copolymerized with a monovinylidene aromatic compounds to impart flame resistant properties to the resultant copolymers.
    Type: Application
    Filed: September 20, 2002
    Publication date: March 20, 2003
    Inventors: Steven R. Mitchell, H. James Harwood, William G. Stobby, Duane B. Priddy, Kyung W. Suh
  • Patent number: 6426429
    Abstract: A process to produce organic phosphites from the group consisting of: wherein each R1 , R2, and R3 is independently selected from the group consisting of hydrogen, methyl, ethyl, n-propyl, iso-propyl, n-butyl, t-butyl, t-amyl, t-hexyl, cyclohexyl, cumyl, t-pentyl, and t-octyl; and wherein each R1, R2, and R3 is independently selected from the group consisting of hydrogen, methyl, ethyl, n-propyl, iso-propyl, n-butyl, t-butyl, t-amyl, t-hexyl, cyclohexyl, cumyl, t-pentyl, and t-octyl and each R4 and R5 is independently selected from the group consisting of hydrogen, methyl, ethyl, n-propyl, iso-propyl, n-butyl, t-butyl, t-amyl, t-hexyl, cyclohexyl, cumyl, t-pentyl, and t-octyl using a metal phenolate where each R1, R2, and R3 is independently selected from the group consisting of hydrogen, methyl, ethyl, n-propyl, iso-propyl, n-butyl, t-butyl, t-amyl, t-hexyl, cyclohexyl, cumyl, t-pentyl, and t-octyl, and Q is a metal cation having a valence x, i.e.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: July 30, 2002
    Assignee: General Electric Company
    Inventor: Gary Vincent Marlin
  • Publication number: 20020040120
    Abstract: Disclosed are cyclic phosphate esters of fumarate- or maleic acids suitable for use as a comonomer, capable of being copolymerized with a monovinylidene aromatic compounds to impart flame resistant properties to the resultant copolymers.
    Type: Application
    Filed: July 24, 2001
    Publication date: April 4, 2002
    Inventors: Steven R. Mitchell, H. James Harwood, William G. Stobby, Duane B. Priddy, Kyung W. Suh
  • Patent number: 6180700
    Abstract: A diphosphite is provided derived from phosphorous trihalide, tetra alkyl hindered bisphenol, and a neoalkyl diol. The phosphites exhibit improved stability and are useful as thermal oxidative stabilizers for thermoplastic compositions.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: January 30, 2001
    Assignee: General Electric Company
    Inventor: James A. Mahood
  • Patent number: 6120700
    Abstract: Improved liquid phase process useful in the hydrocyanation of diolefinic compounds to produce nonconjugated acyclic nitriles and to the liquid phase process of isomerization of the nitrites to, among other things, 3- and/or 4-monoalkene linear nitriles. The improvement involves conducting the process in the presence of zero-valent nickel and a multidentate phosphite ligand. Novel multidentate phosphite ligands and catalyst precursor compositions made therefrom are also disclosed.
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: September 19, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Thomas Foo, James Michael Garner, Wilson Tam
  • Patent number: 6031120
    Abstract: A process for the preparation of organodiphosphites of the formula (ORO)P(OZO)P(ORO) wherein R and Z are different substituted or unsubstituted aryl groups.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: February 29, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Wilson Tam
  • Patent number: 6013706
    Abstract: The hydrolysis stability of trivalent organic phosphorus compounds of the formula I ##STR1## used as stabilizers for thermoplastics is improved if these compounds are treated with 0.01 to 5% by weight of an oxide, a carbonate, a hydroxide, a bicarbonate or a carboxylate of a metal of groups 1a, 2a, 2b and 7b of the periodic table of the elements. The storage stability and the ease of handling are increased and the discoloration of the stabilized polymers is reduced.
    Type: Grant
    Filed: August 22, 1994
    Date of Patent: January 11, 2000
    Assignee: Clariant GmbH
    Inventors: Hans-Jerg Kleiner, Dieter Regnat, Gerhard Pfahler
  • Patent number: 5969015
    Abstract: Compositions, comprising (i) a halogen-containing polymeric material, and(ii) at least one phosphite of formula I ##STR1## wherein n is a number from 1 to 6,R is a divalent linking group of formulae as defined herein as well as of novel compounds of formula I and their use as stabilisers.
    Type: Grant
    Filed: September 10, 1997
    Date of Patent: October 19, 1999
    Assignee: Witco Vinyl Additives GmbH
    Inventors: Horst Zinke, Karl Josef Kuhn, Wolfgang Wehner
  • Patent number: 5919966
    Abstract: A process for producing organo-phosphites of the formula ##STR1## wherein R.sup.1 and R.sup.2 are each 2,4-di-tert-butyl and R.sup.3 is hydrogen is provided. The process involves heating a mixture of a pentaerythritol bis-phosphorohalidite and a phenolic compound and applying a vacuum of at least about 10 inches of mercury wherein the temperature of the reaction mixture is maintained between about 30.degree. C. and about 140.degree. C. Conversions to the organic spiro bis-phosphite is at least twice that of the same process without a vacuum.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: July 6, 1999
    Assignee: General Electric Company
    Inventor: Gary Marlin
  • Patent number: 5917076
    Abstract: A process for producing organo-phosphites of the formula ##STR1## wherein R.sup.1 and R.sup.2 are each 2,4-di-tert-butyl and R.sup.3 is hydrogen is provided. The process involves heating a reaction mixture containing pentaerythritol wherein the pentaerythritol has an average particle size of about 250 microns or less, preferably the pentaerythritol has an average particle size of about 150 microns or less, phosphorous trihalide, a phenolic compound of the formula: ##STR2## wherein each R.sup.1 and R.sup.2 is t-butyl and R.sup.3 is hydrogen, a solvent selected from the group consisting of heptane, hexane, octane, xylene, toluene, and mixtures of the solvents containing at least one of the aforementioned and a catalyst. The process utilizing the aforementioned pentaerythritol particle size has the unexpected advantages of short reaction times as compared to the same process using a larger pentaerythritol particle size.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: June 29, 1999
    Assignee: General Electric Company
    Inventor: Gary Marlin
  • Patent number: 5874494
    Abstract: Phosphites which are useful as a deterioration inhibitor for organic material and are represented by the following formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.5 and R.sup.6 represent a hydrogen atom, an alkyl group, a cycloalkyl group, an alkylcycloalkyl group, an aralkyl group or a phenyl group;R.sup.3 represents hydrogen atom or an alkyl group;R.sup.4 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkylcycloalkyl group, an aralkyl group or a phenyl group, or the two R.sup.4 together form a direct bond, a group represented by --S-- or an optionally substituted methylene group;A represents an alkylene group;W represents a group represented by --O-- or a group represented by --NR.sup.7wherein R.sup.7 represents a hydrogen atom, an alkyl group, etc.;B represents an alkylene group;and one of Y and Z represents a hydroxyl group, an alkoxy group or an aralkyloxy group, and the other one represents hydrogen atom or an alkyl group.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: February 23, 1999
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Naoki Inui, Taketoshi Kikuchi, Kanako Fukuda, Takashi Sanada
  • Patent number: 5811567
    Abstract: The present invention relates to a process for preparing the .alpha. crystal modification of 2,2',2"--nitrilo?triethyltris(3,3',5,5"--tetra--tert--butyl--1,1'--bipheny l--2,2'--diyl) phosphite! (abbreviated as NTTBP) of the formula ##STR1## which comprises dissolving the NTTBP in the form of its melt, its amorphous solid-phase modification or its .beta. crystal modification, hot, at 40 to 100.degree. C., in short-chain ketones having 3 to 7 carbon atoms, such as methyl ethyl ketone or, in particular, acetone, and then initiating crystallization by cooling to room temperature.
    Type: Grant
    Filed: June 16, 1997
    Date of Patent: September 22, 1998
    Inventors: Hans-Jerg Kleiner, Gerhard Pfahler
  • Patent number: 5773498
    Abstract: A diphosphite is provided derived from phosphorous trihalide, tetra alkyl hindered bisphenol, and a neoalkyl diol. The phosphites exhibit improved stability and are useful as thermal oxidative stabilizers for thermoplastic compositions.
    Type: Grant
    Filed: December 31, 1996
    Date of Patent: June 30, 1998
    Assignee: General Electric Company
    Inventor: James A. Mahood
  • Patent number: 5763512
    Abstract: This invention relates to compositions comprising a polyamide, polyester or polyketone, a specific organic phosphite (Irgafos.RTM.12, Ciba-Geigy) and a sterically hindered phenol such as Irganox.RTM.1098, Irganox.RTM.1076, Irganox.RTM.1010, Irganox.RTM.245, Irganox.RTM.259, Irganox.RTM.1035, Irganox.RTM.3114 or Irganox.RTM.3125 (Ciba-Geigy), to the use thereof for stabilising polyamide, polyester or polyketone against oxidative, thermal and/or light-induced degradation, as well as to a process for stabilising these plastic materials.
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: June 9, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: Andre Schmitter
  • Patent number: 5736599
    Abstract: A diphosphite is provided derived from phosphorous trihalide, tetra alkyl hindered bisphenol, and a neoalkyl diol. The phosphites exhibit improved stability and are useful as thermal oxidative stabilizers for thermoplastic compositions.
    Type: Grant
    Filed: December 31, 1996
    Date of Patent: April 7, 1998
    Assignee: General Electric Company
    Inventor: James A. Mahood
  • Patent number: 5717126
    Abstract: Phosphorus-containing calixarenes of the general formula I ##STR1## and a process for their preparation are described. Additionally, a process for the preparation of aldehydes by the hydroformylation of C.sub.3 -C.sub.20 -olefins by means of rhodium or ruthenium carbonyl complexes, in which the phosphorus-containing calixarenes of the formula I are used as ligands, is described.
    Type: Grant
    Filed: August 7, 1995
    Date of Patent: February 10, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Rocco Paciello, Michael Roper, Heinz-Josef Kneuper, Ernst Langguth, Peter Michael Lorz
  • Patent number: 5631392
    Abstract: The invention relates to a process for preparing an aldehyde compound by hydroformylation of an ethylenically unsaturated organic compound, using a catalyst system which includes a Group VIII metal and a novel bidentate phosphite ligand. The bidentate phosphite ligand has a chemical structure according to formula (1), ##STR1## wherein R.sup.1 and R.sup.3 are respectively substituted or unsubstituted organic groups which may be the same or different, and wherein R.sup.2 is a substituted or unsubstituted tetravalent organic group.
    Type: Grant
    Filed: November 17, 1995
    Date of Patent: May 20, 1997
    Assignees: DSM N.V., E.I. Du Pont de Nemours and Company
    Inventors: Carolina B. Hansen, Antonius J. J. M. Teunissen