Patents by Inventor David Apotheker

David Apotheker 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).

  • Patent number: 4320216
    Abstract: Fluorinated allylisocyanurates are extremely efficient gelling agents for fluoroelastomers. Blends of fluorinated allylisocyanurate gelled fluoroelastomers with non-gelled fluoroelastomers have improved processability as compared with non-gelled fluoroelastomers and blends of other gelled fluoroelastomers with non-gelled fluoroelastomers.
    Type: Grant
    Filed: May 29, 1980
    Date of Patent: March 16, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: David Apotheker, deceased
  • Patent number: 4308393
    Abstract: Addition to organosilicon compounds having at least one alkyl group attached to a silicon atom, at least one hydrogen atom being attached to the carbon atom adjacent the silicon atom, of a fluorocompound, which may be a fluoroolefin, a perfluoroketone, or a perfluoroether having a carbon-carbon double bond in .alpha.-position to the ether oxygen atom, give fluorine-containing organosilicon compounds. These adducts may be liquid or solid and are useful as (1) lubricants and sealants for automotive and aerospace industries (2) fire-resistant hydraulic fluids, and (3) siloxane elastomers having good oil and lubricant resistance.
    Type: Grant
    Filed: October 8, 1980
    Date of Patent: December 29, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: David Apotheker
  • Patent number: 4303761
    Abstract: Fluorinated allylisocyanurates are extremely efficient gelling agents for fluoroelastomers. Blends of fluorinated allylisocyanurate gelled fluoroelastomers with non-gelled fluoroelastomers have improved processability as compared with non-gelled fluoroelastomers and blends of other gelled fluoroelastomers with non-gelled fluoroelastomers.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: December 1, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: David Apotheker
  • Patent number: 4299958
    Abstract: Fluorinated allylisocyanurates are extremely efficient gelling agents for fluoroelastomers. Blends of fluorinated allylisocyanurate gelled fluoroelastomers with non-gelled fluoroelastomers have improved processability as compared with non-gelled fluoroelastomers and blends of other gelled fluoroelastomers with non-gelled fluoroelastomers.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: November 10, 1981
    Assignee: E. I. DuPont de Nemours and Company
    Inventor: David Apotheker
  • Patent number: 4214060
    Abstract: A fluoropolymer composition useful in the manufacture of cured fluoropolymer articles can be made by mixing a specified copolymer with an organic peroxide such as a dialkyl peroxide, and preferably also adding a divalent metal oxide and/or hydroxide and a suitable coagent such as triallyl isocyanurate. This composition contains a copolymer obtained by copolymerizing a small amount (e.g. about 0.5-3 mole %) of a bromine-containing olefin with certain fluorine-containing compounds.
    Type: Grant
    Filed: November 30, 1976
    Date of Patent: July 22, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: David Apotheker, Paul J. Krusic
  • Patent number: 4093583
    Abstract: A peroxide curable composition of an elastomeric unsaturated ethylene/C.sub.3 -C.sub.18 .alpha.-monoolefin/nonconjugated diene copolymer (EODM) containing at least about 0.1 weight percent allylic bromine, at least 20 phr of a hydrocarbon extending oil, about 1-5 phr (active ingredient) of an organic peroxide curing agent, and an unsaturated peroxide activator.
    Type: Grant
    Filed: September 29, 1976
    Date of Patent: June 6, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: David Apotheker
  • Patent number: 4035565
    Abstract: A novel fluoropolymer can be made by copolymerizing a small amount (e.g. about 0.5-3 mole %) of bromotrifluoroethylene or bromotetrafluorobutene with certain combinations of monomers comprising selected fluorine-containing compounds. A fluoropolymer composition useful in the manufacture of cured fluoropolymer articles can be made by mixing the resulting fluoropolymer or a closely related fluoropolymer with an organic peroxide such as a dialkyl peroxide, and preferably also adding a divalent metal oxide and/or hydroxide and a suitable coagent such as triallyl isocyanurate.
    Type: Grant
    Filed: March 27, 1975
    Date of Patent: July 12, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: David Apotheker, Paul Joseph Krusic
  • Patent number: RE31324
    Abstract: Addition to organosilicon compounds having at least one alkyl group attached to a silicon atom, at least one hydrogen atom being attached to the carbon atom adjacent the silicon atom, of a fluorocompound, which may be a fluoroolefin.[., a perfluoroketone,.]. or a perfluoroether having a carbon-carbon double bond in .alpha.-position to the ether oxygen atom, give fluorine-containing organosilicon compounds. These adducts may be liquid or solid and are useful as (1) lubricants and sealants for automotive and aerospace industries (2) fire-resistant hydraulic fluids, and (3) siloxane elastomers having good oil and lubricant resistance.
    Type: Grant
    Filed: April 12, 1982
    Date of Patent: July 26, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: David Apotheker, deceased