Patents by Inventor Daniel Edwin Floryan

Daniel Edwin Floryan 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).

  • Intrinsic viscosity control of polyphenylene ether reaction mixtures
    Patent number: 4116939
    Abstract: Polyphenylene ethers produced by an oxidative coupling of a phenol in the presence of an oxygen-containing gas and a metal-amine complex catalyst are freed of catalyst and stabilized against molecular weight loss. Removal of the metal component and molecular weight loss control are effected by contacting the reaction mixture with an aromatic amine plus a metal chelating agent, which stabilizes the intrinsic viscosity of the polyphenylene ether in the reaction mixture. This procedure results in lower catalyst usage and shorter reaction time.
    Type: Grant
    Filed: December 20, 1976
    Date of Patent: September 26, 1978
    Assignee: General Electric Company
    Inventors: Glenn Dale Cooper, Daniel Edwin Floryan
  • Process for recovery of catalyst from polymerization of polyphenylene ethers
    Patent number: 4071500
    Abstract: A process for the recovery of copper catalyst from the polymerization of polyphenylene ethers comprises forming a complex of the catalyst and an amino acid chelating agent, separating the complex from the polymerization mixture, contacting the complex with a reducing sugar in an alkaline medium to precipitate the copper as an oxide and, optionally, acidifying the alkaline medium to precipitate and recover the amino acid chelating agent.
    Type: Grant
    Filed: December 13, 1976
    Date of Patent: January 31, 1978
    Assignee: General Electric Company
    Inventors: Glenn Dale Cooper, Daniel Edwin Floryan
  • Removal of catalyst from polyphenylene oxide reaction mixtures with nitrogenous salts of nitrilotriacetic acid
    Patent number: 4039510
    Abstract: A novel process is disclosed for the removal of catalyst residues from organic solutions of polyphenylene oxides. The process comprises adding a nitrogenous salt of nitrilotriacetic acid to a polyphenylene oxide reaction mixture and thereafter adding an antisolvent for polyphenylene oxide to the mixture to cause the polyphenylene oxide to precipitate.
    Type: Grant
    Filed: December 8, 1975
    Date of Patent: August 2, 1977
    Assignee: General Electric Company
    Inventors: Glenn Dale Cooper, Daniel Edwin Floryan
  • Extraction of copper catalyst from polyphenylene oxide solutions
    Patent number: 4026870
    Abstract: A novel process is disclosed for the preparation of a polyphenylene oxide resin wherein the copper catalyst is extracted by the use of a salt of ethylenediaminetetraacetic acid and a quaternary ammonium salt. The process results in a decrease of the residual copper which is carried over into the polyphenylene oxide resin.
    Type: Grant
    Filed: January 21, 1976
    Date of Patent: May 31, 1977
    Assignee: General Electric Company
    Inventors: Daniel Edwin Floryan, Paul Caswell Fruscione
  • Catalyst removal from polyphenylene ether reaction solutions by bisulfate extraction
    Patent number: 3994859
    Abstract: A novel process for the separation of catalyst residues from polyphenylene ether reaction systems is disclosed. The process is based on the discovery that an aqueous solution of a water soluble bisulfate will extract a complex copper-amine catalyst from a reaction solution of a polyphenylene ether resin.
    Type: Grant
    Filed: April 1, 1975
    Date of Patent: November 30, 1976
    Assignee: General Electric Company
    Inventors: Daniel Edwin Floryan, Justin Walter Gucz
  • Catalyst removal from polyphenylene oxides by ammonia and carbon dioxide
    Patent number: 3988298
    Abstract: This invention provides a novel method for the removal of the catalyst from a polyphenylene oxide polymerization mixture. The novel method is based on the discovery that ammonia and carbon dioxide may be employed to extract the catalyst from a polyphenylene ether reaction mixture.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: October 26, 1976
    Assignee: General Electric
    Inventor: Daniel Edwin Floryan
  • Catalyst removal from polyphenylene ether reaction solutions by aqueous extraction with ammonium salts
    Patent number: 3984374
    Abstract: A novel process for the separation of catalyst residues from polyphenylene ether reaction systems is disclosed. The process is based on the discovery that an aqueous solution of an ammonium salt will extract copper from a reaction solution of a polyphenylene ether resin and a complex copper-amine catalyst.
    Type: Grant
    Filed: April 1, 1975
    Date of Patent: October 5, 1976
    Assignee: General Electric Company
    Inventors: Glenn Dale Cooper, Daniel Edwin Floryan
  • Method of making magnets by polymer-coating magnetic powder
    Patent number: 3933536
    Abstract: Magnets are produced by dissolving in a solvent organic polymer which is a binder for magnetic powder, adding a magnetic powder to the solution, then adding to the solution a vehicle in which the polymer is insoluble. The vehicle is added until the polymer has precipitated onto the magnetic particles. These coated particles are then dried and hot pressed within an orienting magnetic field to produce the magnet.
    Type: Grant
    Filed: November 3, 1972
    Date of Patent: January 20, 1976
    Assignee: General Electric Company
    Inventors: Manfred Doser, Daniel Edwin Floryan