Patents by Inventor Marilyn R. Unroe

Marilyn R. Unroe 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).

  • Transparent poly(arylene ether) compositions
    Patent number: 5691442
    Abstract: The transparency of poly(arylene ether) homopolymers and copolymers is improved by endcapping the polymer chain with an unsubstituted phenolic-based endcapping agent.
    Type: Grant
    Filed: September 17, 1996
    Date of Patent: November 25, 1997
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Marilyn R. Unroe, Rakesh K. Gupta, Ram B. Sharma, Neil C. Thiesing
  • Decyloxy-substituted terephthalic acid compounds and method of synthesis
    Patent number: 4871712
    Abstract: Provided are dialkyloxy-substituted terephthalic acids of the formula ##STR1## wherein R is an alkyl group having about 8 to 12 carbon atoms. Also provided is a method for preparing these dialkyloxy-substituted terephthalic acids.
    Type: Grant
    Filed: September 8, 1988
    Date of Patent: October 3, 1989
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Bruce A. Reinhardt, Marilyn R. Unroe
  • Phenylquinoxaline resin monomers
    Patent number: 4683309
    Abstract: Phenylquinoxaline monomers of the formula Ar--C.tbd.C--Pq--C.tbd.C--Ar are disclosed, wherein Pq is ##STR1## wherein X is a single bond, --O--, --S--, --SO.sub.2 --, --CH.sub.2 --, --CO--, --OC.sub.6 H.sub.4 O--, --OC.sub.6 H.sub.4 --C.sub.6 H.sub.4 --O--, --OC.sub.10 H.sub.6 O-- or --OC.sub.6 H.sub.4 SO.sub.2 C.sub.6 H.sub.4 O--; and wherein Ar is an aromatic ether or thioether. These monomers can be crosslinked to provide thermoset resins of the formula ##STR2## wherein Pq and Ar are as defined above and n has a value between 2 and 3.
    Type: Grant
    Filed: January 16, 1986
    Date of Patent: July 28, 1987
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Marilyn R. Unroe, Bruce A. Reinhardt, Fred E. Arnold
  • Phenylquinoxaline resin compositions
    Patent number: 4667002
    Abstract: Phenylquinoxaline monomers containing sterically hindered ethynyl groups are provided. These monomers can be crosslinked to provide thermoset resins of the general formula ##STR1## wherein Pq is a phenylquinoxaline linking unit. Ar is an aromatic ether or thioether, and n has a value between 2 and 3.
    Type: Grant
    Filed: January 16, 1986
    Date of Patent: May 19, 1987
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Marilyn R. Unroe, Bruce A. Reinhardt, Fred E. Arnold
  • Process for preparing halogen-terminated oligomers useful in the production of acetylene-terminated resins
    Patent number: 4550210
    Abstract: A process for preparing halogen-terminated oligomers by an Ullmann condensation is disclosed wherein a diphenol and a dihalobenzene are reacted in the presence of cuprous oxide in 2,4,6-collidine. The oligomers are useful in producing acetylene-terminated resins by replacing the terminal halogen atoms with acetylene groups.
    Type: Grant
    Filed: August 12, 1983
    Date of Patent: October 29, 1985
    Assignee: The University of Dayton
    Inventors: Frederick L. Hedberg, Marilyn R. Unroe
  • Thermosetting arylether compounds and their synthesis
    Patent number: 4547592
    Abstract: Arylether compounds containing terminal phenylethynyl groups are provided. Also provided is a process for producing these compounds. The following compounds are claimed; 4,4'-bis(3-phenylethynyl-phenoxy) diphenylsulfone; 2,2-bis[([([3-phenoxy]-3-phenoxy)-3-phenylethynyl]-3-phenoxy)-4-phenyl]-pr opane and 2,2-bis[([([3-phenoxy]-3-phenoxy)-3-phenyl ethynyl]-3-phenoxy)-4-phenyl]-hexafluoropropane.
    Type: Grant
    Filed: July 25, 1984
    Date of Patent: October 15, 1985
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Bruce A. Reinhardt, Fred E. Arnold, Marilyn R. Unroe
  • Thermally stable phenylacetylene terminated arylether resins
    Patent number: 4513131
    Abstract: Thermally stable resins based on arylether compounds having terminal phenylethynyl groups are provided.
    Type: Grant
    Filed: July 25, 1984
    Date of Patent: April 23, 1985
    Inventors: Bruce A. Reinhardt, Fred E. Arnold, Marilyn R. Unroe