Patents by Inventor Christopher P. Junk

Christopher P. Junk has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20090227447
    Abstract: The present invention relates to compositions of matter that are ionic liquids, the compositions comprising any of eleven cations combined with any of three fluorinated sulfonated anions. Compositions of the invention should be useful as solvents and, perhaps, as catalysts for many reactions, including aromatic electrophilic substitution, nitration, acylation, esterification, etherification, oligomerization, transesterification, isomerization and hydration.
    Type: Application
    Filed: May 27, 2009
    Publication date: September 10, 2009
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Mark Andrew Harmer, Christopher P. Junk, Jemma Vickery
  • Patent number: 7544813
    Abstract: Compositions of matter useful as ionic liquids of the formula Z+A?, wherein Z+ is a cation selected from the group consisting of pyridinium, pyridazinium, pyrimidinium, pyrazinium, imidazolium, pyrazolium, thiazolium, oxazolium, triazolium, and phosphonium, ammonium cations with specified substituents, and A? is selected from the group consisting of the following three anions wherein R11, R12 and R13 are as specified. R11—CHF—CF2—SO3???Formula I R12—CF2—CF2—SO3???Formula II (R13—CHF—CF2—SO2)2N???Formula III.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: June 9, 2009
    Assignee: E.I. Du Pont De Nemours and Company
    Inventors: Mark Andrew Harmer, Christopher P. Junk, Jemma Vickery
  • Publication number: 20090137840
    Abstract: The invention provides a process for the preparation of fluorinated alkanesulfonic acid anhydrides by contacting alkanesulfonic acids with phosphorus pentoxide, the phosphorus pentoxide being provided as a dispersion in an inert oil. The invention also provides novel fluorinated alkanesulfonic acid anhydrides including 2-hydrotetrafluoroethanesulfonic acid anhydride.
    Type: Application
    Filed: November 20, 2008
    Publication date: May 28, 2009
    Applicant: E. I. Du Pont de Nemours and Company
    Inventors: Christopher P. Junk, Vsevolod Rostovtsev, Allen Capron Sievert, Lee G. Sprague
  • Patent number: 7528287
    Abstract: This invention relates to a process comprising using ionic liquids for preparing poly(tetramethylene) glycol from tetrahydrofuran.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: May 5, 2009
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Mark Andrew Harmer, Christopher P. Junk, Jemma Vickery, Robert Miller
  • Publication number: 20090043016
    Abstract: Improved flame retardant polytrimethylene terephthalate compositions are provided by including a fluorinated sulfonate salt as a flame retardant additive.
    Type: Application
    Filed: August 6, 2007
    Publication date: February 12, 2009
    Inventors: Jing-Chung Chang, Christopher P. Junk, Yuanfeng Liang, Joseph P. McKeown, Matthew Arthur Page
  • Publication number: 20090030246
    Abstract: A process for making a fluorinated product comprising contacting an alcohol with 1,1,2,2-tetrafluoroethyl-N,N-dimethylamine to produce a product mixture containing the fluorinated product and N,N-dimethyl difluoroacetamide, quenching the product mixture in water to form a first organic phase and an aqueous phase, recovering fluorinated product by separating the first organic phase from the aqueous phase, treating the aqueous phase to recover N,N-dimethyl difluoroacetamide, and converting recovered N,N-dimethyl difluoroacetamide to 1,1,2,2-tetrafluoroethyl-N,N-dimethylamine.
    Type: Application
    Filed: July 24, 2008
    Publication date: January 29, 2009
    Applicant: E. I. du Pont de Nemours and Company
    Inventors: Christopher P. JUNK, Viacheslav A. Petrov
  • Publication number: 20080221241
    Abstract: The present invention relates to novel flame retardant polycarbonate resin compositions comprising at least one aromatic polycarbonate resin, at least one anti-drip agent, and at least one salt as defined herein. The present invention also provides methods for preparing articles comprising said flame retardant composition, and articles made therefrom.
    Type: Application
    Filed: February 28, 2008
    Publication date: September 11, 2008
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Christopher P. Junk, Donald Douglas May
  • Patent number: 7405330
    Abstract: The present invention relates to a process comprising using ionic liquids for the polycondensation of 1,3-propanediol reactants to produce polytrimethylene ether glycol and copolymers thereof.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: July 29, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Mark Andrew Harmer, Christopher P. Junk, Leo Ernest Manzer
  • Patent number: 7402711
    Abstract: This invention relates to a process comprising using ionic liquids for preparing poly(tetramethylene)glycol from tetrahydrofuran.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: July 22, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Mark Andrew Harmer, Christopher P. Junk, Leo Ernest Manzer
  • Patent number: 7354532
    Abstract: Compositions are provided comprising at least one conductive polymer and at least one non-polymeric fluorinated organic acid, wherein the conductive polymer is selected from a polythiophene, a polypyrrole, a polyaniline, and combinations thereof. Electronic devices and applications having at least one layer comprising such compositions are further provided.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: April 8, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Che-Hsiung Hsu, Mark Andrew Harmer, Christopher P. Junk
  • Patent number: 7314962
    Abstract: The present invention relates to the synthesis of alkylated aromatic compounds using ionic liquids as the solvent. Alkylated aromatic compounds are synthesized by reacting an aromatic compound with a monoolefin in the presence of an acid catalyst.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: January 1, 2008
    Assignee: E. I. du Pont de Nemours & Co.
    Inventors: Mark Andrew Harmer, Christopher P. Junk, Leo Ernest Manzer
  • Patent number: 7238772
    Abstract: The present invention relates to a process comprising using ionic liquids for the polycondensation of 1,3-propanediol reactants to produce polytrimethylene ether glycol and copolymers thereof.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: July 3, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mark Andrew Harmer, Christopher P. Junk
  • Patent number: 7157588
    Abstract: The present invention relates to compositions of matter that are useful as ionic liquids. The compositions of the invention are based on an N-substituted pyrrolidinone, said pyrrolidinone having a pendant ammonium cation that is separated from the pyrrolidone ring by a variable length alkyl spacer.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: January 2, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mark Andrew Harmer, Christopher P. Junk, Leo Ernest Manzer