Patents by Inventor Ming-Hong Hung

Ming-Hong Hung 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).

  • Functional fluoropolymers
    Patent number: 5354910
    Abstract: Repeat units having pendant functional groups increase the solubility of polymers containing repeat units of perfluoro-2,2-dimethyl-1,3-dioxole.
    Type: Grant
    Filed: February 1, 1994
    Date of Patent: October 11, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ming-Hong Hung, Paul R. Resnick
  • Production of perfluoro(alkyl vinyl ethers)
    Patent number: 5350497
    Abstract: Disclosed herein is a process for making perfluoro(alkyl vinyl ethers) by fluorination with elemental fluorine of selected novel partially fluorinated (di)chloroethyl ethers, followed by dehalogenation to the corresponding perfluoro(alkyl vinyl ether). The perfluoro(alkyl vinyl ethers) are useful as monomers for molding resins and elastomers.
    Type: Grant
    Filed: May 21, 1993
    Date of Patent: September 27, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ming-Hong Hung, Shlomo Rozen
  • Functional fluoropolymers
    Patent number: 5310838
    Abstract: Repeat units having pendant functional groups increase the solubility of polymers containing repeat units of perfluoro-2,2-dimethyl-1,3-dioxole.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: May 10, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ming-Hong Hung, Paul R. Resnick
  • Partially fluorinated compounds and polymers
    Patent number: 5286825
    Abstract: Partially fluorinated compounds of specified formulas that are useful as chemical intermediates and monomers are disclosed. Partially fluorinated polymers prepared from one of these compounds are also disclosed. Fluoro-2,2-dimethyldioxolanes and copolymers thereof are further disclosed.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: February 15, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Douglas R. Anton, William B. Farnham, Ming-Hong Hung, Ronald J. McKinney, Paul R. Resnick
  • Dioxolane-containing fluoroepoxides
    Patent number: 5250709
    Abstract: The present invention concerns novel dioxolane containing fluoroepoxides that are useful as curing materials, adhesives lubricants and coatings.
    Type: Grant
    Filed: November 10, 1992
    Date of Patent: October 5, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ming-Hong Hung, Shlomo Rozen
  • Functionalized trifluorovinyl ethers and polymers therefrom
    Patent number: 5237026
    Abstract: Trifluorovinyl ethers containing selected functional groups, and homo- and copolymers prepared from them, are disclosed, as well as intermediates useful in the preparation of the ethers.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: August 17, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ming-Hong Hung
  • Partially fluorinated compounds and polymers
    Patent number: 5233058
    Abstract: Partially fluorinated compounds of specified formulas that are useful as chemical intermediates and monomers are disclosed. Partially fluorinated polymers prepared from one of these compounds are also disclosed. Fluoro-2,2-dimethyldioxolanes and copolymers thereof are further disclosed.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: August 3, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Douglas R. Anton, William B. Farnham, Ming-Hong Hung, Ronald J. McKinney
  • Iodine containing chain transfer angents for fluoropolymer polymerizations
    Patent number: 5231154
    Abstract: An improved process for the polymerization of fluoromonomers to fluoropolymers which comprises using as a chain transfer agent the compound Y(CF.sub.2).sub.m CH.sub.2 CH.sub.2 I, wherein m is 3 to 12, and Y is F or --CH.sub.2 CH.sub.2 I.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: July 27, 1993
    Assignee: E. I. DuPont de Nemours and Company
    Inventor: Ming-Hong Hung
  • Epoxides and their preparation
    Patent number: 5214167
    Abstract: Process comprising heating a dioxole at 100.degree.-400.degree. C. for a sufficient time to convert the dioxole to an epoxide, for example, bis-2,2-trifluoromethyl-4,5-difluoro-1,3-dioxole to 2,3-epoxy-3-trifluoromethyl-4-trifluorobutyryl fluoride.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: May 25, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ming-Hong Hung, Paul R. Resnick
  • Cyclic perfluoropolyether
    Patent number: 5210233
    Abstract: Novel hydroxy containing fluorovinyl ethers, polymers of hydroxy containing fluorovinyl ethers, novel cyclic ethers, copolymers of selected hydroxy containing fluorovinyl ethers, a process for reducing ester containing fluorovinyl compounds to the corresponding alcohol with borohydrides, and a process for polymerizing hydroxy containing fluorovinyl ethers are disclosed.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: May 11, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William B. Farnham, Ming-Hong Hung
  • Dioxolane-containing fluoroepoxides
    Patent number: 5198556
    Abstract: The present invention concerns novel dioxolane containing fluoroepoxides that are useful as curing materials, adhesives lubricants and coatings.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: March 30, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ming-Hong Hung, Shlomo Rozen
  • Hydroxy containing fluorovinyl compounds and polymers thereof
    Patent number: 5196494
    Abstract: Novel hydroxy containing fluorovinyl ethers, polymers of hydroxy containing fluorovinyl ethers, copolymers of selected hydroxy containing fluorovinyl ethers, a process for reducing ester containing fluorovinyl compounds to the corresponding alcohol with borohydrides, and a process for polymerizing hydroxy containing fluorovinyl ethers are disclosed.
    Type: Grant
    Filed: December 4, 1991
    Date of Patent: March 23, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ming-Hong Hung
  • Functionalized trifluorovinyl ethers and polymers therefrom
    Patent number: 5196569
    Abstract: Trifluorovinyl ethers containing selected functional groups, and homo- and copolymers prepared from them, are disclosed, as well as intermediates useful in the preparation of the ethers.
    Type: Grant
    Filed: October 10, 1991
    Date of Patent: March 23, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ming-Hong Hung
  • Hydroxy containing fluorovinyl compounds and polymers thereof
    Patent number: 5134211
    Abstract: Novel hydroxy containing fluorovinyl ethers, polymers of hydroxy containing fluorovinyl ethers, novel cyclic ethers, copolymers of selected hydroxy containing fluorovinyl ethers, a process for reducing ester containing fluorovinyl compounds to the corresponding alcohol with borohydrides, and a process for polymerizing hydroxy containing fluorovinyl ethers are disclosed.
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: July 28, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William B. Farnham, Ming-Hong Hung
  • Halodioxolane-containing oxazines and oxazolines, and their polymers
    Patent number: 5110938
    Abstract: Chloro- and fluorosubstituted dioxolane containing oxazolines and oxazines, and their polymers are disclosed. The polymers are useful for surface modification of other polymers.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: May 5, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ming-Hong Hung, Mureo Kaku
  • Hydroxy containing fluorovinyl compounds and polymers thereof
    Patent number: 5093446
    Abstract: Novel hydroxy containing fluorovinyl ethers, polymers of hydroxy containing fluorovinyl ethers, copolymers of selected hydroxy containing fluorovinyl ethers, a process for reducing ester containing fluorovinyl compounds to the corresponding alcohol with borohydrides, and a process for polymerizing hydroxy containing fluorovinyl ethers are disclosed.
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: March 3, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ming-Hong Hung
  • Perfluoro-4,4'-bis(2,2-dimethyl-1,3-dioxolane) and its preparation and use
    Patent number: 5070213
    Abstract: The novel compound perfluoro-4,4'-bis(2,2-dimethyl-1,3-dioxolane) is disclosed. Its preparation by fluorination of 4,4'-bis[2,2-bis(trifluoromethyl)-1,3-dioxolane using UV radiation or by reaction of 2,2-bis(trifluoromethyl)-4-iodo-4,5,5-trifluoromethyl-1,3-dioxolane with zinc in acetic anhydride and methylene chloride is also disclosed. The infusion of perfluoro-4,4'-bis(2,2-dimethyl-1,3-dioxolane) into mammalian tissue to facilitate inspection thereof by muclear magnetic resonance imaging is also disclosed.
    Type: Grant
    Filed: August 17, 1990
    Date of Patent: December 3, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Hsu-Nan Huang, Ming-Hong Hung, Carl G. Krespan
  • Hydroxy containing fluorovinyl compounds and polymers thereof
    Patent number: 5059720
    Abstract: Novel hydroxy containing fluorovinyl ethers, polymers of hydroxy containing fluorovinyl ethers, copolymers of selected hydroxy containing fluorovinyl ethers, a process for reducing ester containing fluorovinyl compounds to the corresponding alcohol with borohydrides, and a process for polymerizing hydroxy containing fluorovinyl ethers are disclosed.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: October 22, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ming-Hong Hung
  • Novel fluorinated dienes
    Patent number: 5043490
    Abstract: Novel 1,1,2-trifluorodienes, which have a minimum of seven carbon atoms and may contain in their molecule a phenylene or a methylphenylene moiety, are useful monomers, that can be polymerized in the presence of either free radical or coordination catalysts and can undergo selective reactions such, as for example, epoxidation of the vinyl (nonfluorinated) double bond. The resulting perfluorovinyl epoxy compounds also are useful monomers, which can undergo polymerization to useful materials.
    Type: Grant
    Filed: May 30, 1990
    Date of Patent: August 27, 1991
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ming-Hong Hung, Aaron C. Su, Wei-Yuan Huang, Yuanfa Zhang
  • 1,1,2-trifluoro-6-iodo-1-hexene, 1,1,2-trifluoro-1,5-hexadiene, and processes therefore
    Patent number: 5015790
    Abstract: Fluorine-containing iodo-substituted 1-hexenes, their preparation by the addition of two moles of ethylene to fluorine-containing iodo olefins, and their dehydroiodination to fluorine-containing 1,5-dienes are disclosed.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: May 14, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ming-Hong Hung