Patents by Inventor Lawrence W. Flatley

Lawrence W. Flatley 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).

  • Process for producing a functionalized thermoplastic polymer
    Patent number: 5565161
    Abstract: Multiple sequential chemical reactions on a polymeric feedstock are carried out in an extruder with multiple reaction zones. Each reaction zone has means for introduction of reagents, for mixing of reagents with polymer and for removal of by/co-products or unreacted reagents.
    Type: Grant
    Filed: February 1, 1995
    Date of Patent: October 15, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Richard S. Auda, William M. Davis, David Y. Chung, Lawrence W. Flatley, Jr., Brenton G. Jones, Donald A. White, Hans G. Woudboer
  • Multiple reaction process in melt processing equipment
    Patent number: 5552096
    Abstract: Multiple sequential chemical reactions on a polymeric feedstock are carried out in an extruder with multiple reaction zones. Each reaction zone has means for introduction of reagents, for mixing of reagents with polymer and for removal of by/co-products or unreacted reagents.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: September 3, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Richard S. Auda, William M. Davis, David Y. Chung, Lawrence W. Flatley, Brenton G. Jones, Donald A. White, Hans G. Woudboer
  • Low molecular weight isoolefin polymer
    Patent number: 5434221
    Abstract: A process is provided for producing a low molecular weight isoolefin polymer by contacting at conversion conditions a higher molecular weight saturated isoolefin polymer, for example, polyisobutylene or a copolymer of a C.sub.4 to C.sub.7 isoolefin and a para-alkylstyrene, in the melt phase, with an initiator, such as an oxygen-containing gas, an organic peroxide or an azo compound.
    Type: Grant
    Filed: August 9, 1993
    Date of Patent: July 18, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Donald A. White, Lawrence W. Flatley, Richard C. Yeh, Raymond F. Murphy
  • Multiple reaction process in melt processing equipment
    Patent number: 5424367
    Abstract: Multiple sequential chemical reactions on a polymeric feedstock are carried out in an extruder with multiple reaction zones. Each reaction zone has means for introduction of reagents, for mixing of reagents with polymer and for removal of by/co-products or unreacted reagents.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: June 13, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Richard S. Auda, William M. Davis, David Y. Chung, Lawrence W. Flatley, Brenton G. Jones, Donald A. White, Hans G. Woudboer
  • Process for producing low molecular weight isoolefin polymers
    Patent number: 5262489
    Abstract: A process is provided for producing a low molecular weight isoolefin polymer by contacting at conversion conditions a higher molecular weight saturated isoolefin polymer, for example, polyisobutylene or a copolymer of a C.sub.4 to C.sub.7 isoolefin and a para-alkylstyrene, in the melt phase, with an initiator, such as an oxygen-containing gas, an organic peroxide or an azo compound.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: November 16, 1993
    Inventors: Donald A. White, Lawrence W. Flatley, Richard C. Yeh, Raymond F. Murphy
  • Partially crosslinked elastomeric polymers and process for producing the same
    Patent number: 5102958
    Abstract: A partially crosslinked, unsaturated elastomeric polymer of a C.sub.4 to C.sub.7 isomonoolefin and a C.sub.4 to C.sub.14 conjugated multiolefin is provided which has a low crosslink density. The partially crosslinked polymer is produced by curing an uncrosslinked unsaturated polymer having a low level of chemically bound halogen with a curing agent which reacts only with the halogen. Processes for preparing these partially crosslinked unsaturated polymers are also provided.
    Type: Grant
    Filed: May 30, 1991
    Date of Patent: April 7, 1992
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Pierre Hous, Olivier H. Lacoste, James V. Fusco, Irwin J. Gardner, William M. Davis, Lawrence W. Flatley
  • Partially crosslinked elastomeric polymers and process for producing the same
    Patent number: 5075387
    Abstract: A partially crosslinked, unsaturated elastomeric polymer of a C.sub.4 to C.sub.7 isomonoolefin and a C.sub.4 to C.sub.14 conjugated multiolefin is provided which has a low crosslink density. The partially crosslinked polymer is produced by curing an uncrosslinked unsaturated polymer having a low level of chemically bound halogen with a curing agent which reacts only with the halogen. Processes for preparing these partially crosslinked unsaturated polymers are also provided.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: December 24, 1991
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Pierre Hous, Olivier H. Lacoste, James V. Fusco, Irwin J. Gardner, William M. Davis, Lawrence W. Flatley
  • Process for halogenating para-alkyl styrene/isoolefin copolymers
    Patent number: H1475
    Abstract: A process for halogenating copolymers of an isoolefin having from 4 to 7 carbon atoms and a para-alkylstyrene in the melt phase is provided in which the halogenation reaction is performed in a continuous flow device, such as an extruder-reactor. Halogenated copolymers produced by the process are also provided.
    Type: Grant
    Filed: July 2, 1990
    Date of Patent: August 1, 1995
    Inventors: Neil F. Newman, Donald A. White, Lawrence W. Flatley, William M. Davis