Patents by Inventor Ralph Howard Schatz

Ralph Howard Schatz 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).

  • Processes utilizing extractive distillation
    Patent number: 7699962
    Abstract: The invention relates to methods for separating mixture components such as reactor effluent components. In particular, the invention relates to the use of an extractive agent such as a hydrocarbon in an extractive distillation process to separate monomers such as a C4-C7 isoolefins such as isobutylene from mixtures such as reactor effluents including one or more hydrofluorocarbon(s) (HFC).
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: April 20, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Michael Francis McDonald, Ralph Howard Schatz, Claude André Gautier, Richard Dwight Hembree
  • Process for polymerizing cationically polymerizable monomers
    Patent number: 6939933
    Abstract: The invention relates to a new catalyst system that improves the heat transfer capability of a butyl reactor slurry process system in the production of random copolymers of one or more isoolefin monomers and one or more conjugated diene monomers in continuous slurry polymerization processes. The process is carried out in an anhydrous polymerization system containing a mixture of the monomers in a polar diluent along with a Lewis acid and a C5 or greater initiator having a tertiary halide.
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: September 6, 2005
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Robert N. Webb, David Y. Chung, Andrew B. Donnalley, Michael F. McDonald, Kenneth W. Powers, Ralph Howard Schatz
  • Process for polymerizing cationically polymerizable monomers
    Publication number: 20040054103
    Abstract: The invention relates to a new catalyst system that improves the heat transfer capability of a butyl reactor slurry process system in the production of random copolymers of one or more isoolefin monomers and one or more conjugated diene monomers in continuous slurry polymerization processes. The process is carried out in an anhydrous polymerization system containing a mixture of the monomers in a polar diluent along with a Lewis acid and a C5 or greater initiator having a tertiary halide.
    Type: Application
    Filed: June 2, 2003
    Publication date: March 18, 2004
    Inventors: Robert N. Webb, David Y. Chung, Andrew B. Donnalley, Michael E. McDonald, Kenneth W. Powers, Ralph Howard Schatz
  • Production of polyisobutylene copolymers
    Patent number: 6620898
    Abstract: The invention relates to a new improved catalyst to produce random copolymers of one or more iso-olefin monomers and one or more para-alkylstyrene monomers. The invention also relates to an improved continuous slurry polymerization process to produce random copolymers using the improved catalyst system. The process is carried out in an anhydrous polymerization system containing a mixture of the monomers in a polar solvent along with a Lewis acid and a stabilizing initiator.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: September 16, 2003
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Robert N. Webb, Kenneth W. Powers, Michael F. McDonald, Ralph Howard Schatz
  • Production of polyisobutylene copolymers
    Publication number: 20020173612
    Abstract: The invention relates to a new improved catalyst to produce random copolymers of one or more iso-olefin monomers and one or more para-alkylstyrene monomers. The invention also relates to an improved continuous slurry polymerization process to produce random copolymers using the improved catalyst system. The process is carried out in an anhydrous polymerization system containing a mixture of the monomers in a polar solvent along with a Lewis acid and a stabilizing initiator.
    Type: Application
    Filed: May 3, 2002
    Publication date: November 21, 2002
    Inventors: Robert N. Webb, Kenneth W. Powers, Michael F. McDonald, Ralph Howard Schatz
  • Production of polyisobutylene copolymers
    Patent number: 6444768
    Abstract: The invention relates to a new improved catalyst to produce random copolymers of one or more iso-olefin monomers and one or more para-alkylstyrene monomers. The invention also relates to an improved continuous slurry polymerization process to produce random copolymers using the improved catalyst system. The process is carried out in an anhydrous polymerization system containing a mixture of the monomers in a polar solvent along with a Lewis acid and a stabilizing initiator.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: September 3, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Robert N. Webb, Kenneth W. Powers, Michael F. McDonald, Ralph Howard Schatz