Patents by Inventor William T. Freed

William T. Freed 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: 5433984
    Abstract: This invention provides an improved adhesive layer for multi-layer films and bottles, the adhesive layer being a graft copolymer of a polyolefin backbone with a methyl methacrylate graft. The graft copolymer sufficiently improves the compatibility between barrier resins and polyolefins to permit the production of monolithic or single layer bottles comprised of a blend of those three components. The resultant products have improved physical properties while retaining acceptable permeability to gases.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: July 18, 1995
    Assignee: Rohm and Haas Company
    Inventors: Casmir S. Ilenda, Thomas M. Frantz, William T. Freed
  • Patent number: 5369169
    Abstract: Polymer blends of a) polymers containing predominantly mers of (meth)acrylates and/or glutarimides with b) up to about 40 weight percent of polymers having greater than about 50 tool % vinyl alcohol mers exhibit useful barrier properties to oxygen and other environmental gases, while maintaining or enhancing physical properties and clarity.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: November 29, 1994
    Assignee: Rohm and Haas Company
    Inventors: Edward E. La Fleur, Robert M. Amici, William T. Freed, William J. Work, William G. Carson
  • Patent number: 5300570
    Abstract: This invention provides an improved adhesive layer for multi-layer films and bottles, the adhesive layer being a graft copolymer of a polyolefin backbone with a methyl methacrylate graft. The graft copolymer sufficiently improves the compatibility between barrier resins and polyolefins to permit the production of monolithic or single layer bottles comprised of a blend of those three components. The resultant products have improved physical properties while retaining acceptable permeability to gases.
    Type: Grant
    Filed: July 8, 1992
    Date of Patent: April 5, 1994
    Assignee: Rohm and Haas Company
    Inventors: Casmir S. Ilenda, Thomas M. Frantz, William T. Freed
  • Patent number: 5296537
    Abstract: Polymer blends of a) polymers containing predominantly mers of (meth)acrylates and/or glutarimides with b) up to about 40 weight percent of polymers having greater than 50 mol % vinyl alcohol mers exhibit useful barrier properties to oxygen and other environmental gases, while maintaining or enhancing physical properties and clarity.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: March 22, 1994
    Assignee: Rohm and Haas Company
    Inventors: Edward E. La Fleur, Robert M. Amici, William T. Freed, William J. Work, William G. Carson
  • Patent number: 5264483
    Abstract: Glutarimide polymers having an acid and anhydride content lower than the acid and/or anhydride content normally present in the glutarimide polymers. Blends of the reduced acid and anhydride glutarimide polymers with thermoplastic materials are disclosed. A process for altering the properties of imide polymers by reducing or substantially removing acid and anhydride levels normally present in the imide polymer is also disclosed.
    Type: Grant
    Filed: January 10, 1991
    Date of Patent: November 23, 1993
    Assignee: Rohm and Haas Company
    Inventors: Michael P. Hallden-Abberton, Newman M. Bortnick, Leslie A. Cohen, William T. Freed, Harry C. Fromuth
  • Patent number: 5208083
    Abstract: Polymer blends of a) polymers containing predominantly mers of (meth)acrylates and/or glutarimides with b) up to about 40 weight percent of polymers having greater than about 50 mol % vinyl alcohol mers exhibit useful barrier properties to oxygen and other environmental gases, while maintaining or enhancing physical properties and clarity.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: May 4, 1993
    Assignee: Rohm and Haas Company
    Inventor: William T. Freed
  • Patent number: 5159058
    Abstract: Polyglutarimides exhibit improved optical properties, as well as lowered content of non-aqueous volatiles, when the molten polyglutarimide is mixed with water, methanol, ethanol, or mixtures thereof, and the water, methanol, ethanol, or mixtures thereof is removed prior to isolation and processing of the polyglutarimide.
    Type: Grant
    Filed: April 16, 1992
    Date of Patent: October 27, 1992
    Assignee: Rohm and Haas Company
    Inventors: Robert E. Jerman, William T. Freed, Leslie A. Cohen, Lucinda F. Buhse, Glenn W. Miller
  • Patent number: 5147930
    Abstract: Polymer blends of a) polymers containing predominantly mers of(meth)acrylates and/or glutarimides with b) up to about 40 weight percent of polymers having greater than about 50 mol % vinyl alcohol mers exhibit useful barrier properties to oxygen and other environmental gases, while maintaining or enhancing physical properties and clarity.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: September 15, 1992
    Assignee: Rohm and Haas Company
    Inventors: Edward E. La Fleur, Robert M. Amici, William T. Freed, William J. Work, William G. Carson
  • Patent number: 5126409
    Abstract: Polyglutarimides exhibit improved optical properties, as well as lowered content of non-aqueous volatiles, when the molten polyglutarimide is mixed with water, methanol, ethanol, or mixtures thereof, and the water, methanol, ethanol, or mixtures thereof is removed prior to isolation and processing of the polyglutarimide.
    Type: Grant
    Filed: January 8, 1991
    Date of Patent: June 30, 1992
    Assignee: Rohm and Haas Company
    Inventors: Robert E. Jerman, William T. Freed, Leslie A. Cohen, Lucinda F. Buhse, Glenn W. Miller
  • Patent number: 5035933
    Abstract: This invention provides an improved adhesive layer for multi-layer films and bottles, the adhesive layer being a graft copolymer of a polyolefin backbone with a methyl methacrylate graft. The graft copolymer sufficiently improves the compatibility between barrier resins and polyolefins to permit the production of monolithic or single layer bottles comprised of a blend of those three components. The resultant products have improved physical properties while retaining acceptable permeability to gases.
    Type: Grant
    Filed: September 28, 1989
    Date of Patent: July 30, 1991
    Assignee: Rohm and Haas Company
    Inventors: Casmir S. Ilenda, Thomas M. Frantz, William T. Freed
  • Patent number: 5004777
    Abstract: Glutarimide polymers having an acid and anhydride content lower than the acid and/or anhydride content normally present in the glutarimide polymers. Blends of the reduced acid and anhydride glutarimide polymers with thermoplastic materials are disclosed. A process for altering the properties of imide polymers by reducing or substantially removing acid and anhydride levels normally present in the imide polymer is also disclosed.
    Type: Grant
    Filed: May 24, 1990
    Date of Patent: April 2, 1991
    Assignee: Rohm and Haas Company
    Inventors: Michael P. Hallden-Abberton, Newman M. Bortnick, Leslie A. Cohen, William T. Freed, Harry C. Fromuth
  • Patent number: 4971847
    Abstract: Multilayer structures of gas-permeable film or sheet alternating with, and adherent to, layers of poly(glutarimide) film or sheet, exhibit outstanding resistance to gas permeation.
    Type: Grant
    Filed: June 2, 1989
    Date of Patent: November 20, 1990
    Assignee: Rohm and Haas Company
    Inventor: William T. Freed
  • Patent number: 4954574
    Abstract: Glutarimide polymers having an acid and anhydride content lower than the acid and/or anhydride content normally present in the glutarimide polymers. Blends of the reduced acid and anhydride glutarimide polymers with thermoplastic materials are disclosed. A process for altering the properties of imide polymers by reducing or substantially removing acid and anhydride levels normally present in the imide polymer is also disclosed.
    Type: Grant
    Filed: December 19, 1989
    Date of Patent: September 4, 1990
    Assignee: Rohm and Haas Company
    Inventors: Michael P. Hallden-Abberton, Newman M. Bortnick, Leslie A. Cohen, William T. Freed, Harry C. Fromuth
  • Patent number: 4727117
    Abstract: Glutarimide polymers having an acid and anhydride content lower than the acid and/or anhydride content normally present in the glutarimide polymers. Blends of the reduced acid and anhydride glutarimide polymers with thermoplastic materials are disclosed. A process for altering the properties oif imide polymers by reducing or substantially removing acid and anhydride levels normally present in the imide polymer is also disclosed.
    Type: Grant
    Filed: August 27, 1985
    Date of Patent: February 23, 1988
    Assignee: Rohm and Haas Company
    Inventors: Michael P. Hallden-Abberton, Newman M. Bortnick, Leslie A. Cohen, William T. Freed, Harry C. Fromuth
  • Patent number: 4223128
    Abstract: There is disclosed a process for reducing the acetaldehyde content and the generation rate of acetaldehyde of polyethylene terephthalate chip which has a crystallinity of at least about 30% in order to render the polyethylene terephthalate suitable for making containers which are useful in the carbonated beverage industry. This process comprises stabilizing the polyethylene terephthalate by heating it at an elevated temperature in air and maintaining an air to chip ratio at a predetermined value of at least about 0.8 standard cubic foot of air per minute/pound of resin per hour and at a vapor velocity of at least about 0.5 foot per second. The air used in the stabilization process has a dew point of less than about -30.degree. C.The stabilized polyethylene terephthalate produced by this process has an acetaldehyde level of less than about 2.5 parts per million, a generation rate of acetaldehyde of less than about 3.0 parts per million per minute and an intrinsic viscosity of from about 0.60 to about 0.
    Type: Grant
    Filed: May 16, 1978
    Date of Patent: September 16, 1980
    Assignee: Celanese Corporation
    Inventors: George W. Halek, William T. Freed, Jerome S. Schaul, Raymond W. Rupp, Stanley L. Pauls