Patents by Inventor Ernest L. Rister, Jr.
Ernest L. Rister, Jr. 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).
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Patent number: 10766994Abstract: The present disclosure provides a method for reducing the aldehyde content in an amine catalyst by treating the amine catalyst with a treating agent selected from a non-cyclic amide substituted with an isocyanate reactive group, a guanidine substituted with an isocyanate reactive group, a polyether amine adducted with a urea compound or a guanidine compound, a free radical scavenger and a mixture thereof. The treated amine catalyst may then be used in the production of polyurethane materials which exhibit reduced aldehyde emissions.Type: GrantFiled: January 13, 2015Date of Patent: September 8, 2020Assignee: Huntsman Petrochemical LLCInventors: Ernest L. Rister, Jr., Haibo Zhao, Robert A. Grigsby, Jr., Robert B. Moore
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Publication number: 20180355093Abstract: The present disclosure provides a method for reducing the aldehyde content in an amine catalyst by treating the amine catalyst with a treating agent selected from a non-cyclic amide substituted with an isocyanate reactive group, a guanidine substituted with an isocyanate reactive group, a polyether amine adducted with a urea compound or a guanidine compound, a free radical scavenger and a mixture thereof. The treated amine catalyst may then be used in the production of polyurethane materials which exhibit reduced aldehyde emissions.Type: ApplicationFiled: January 13, 2015Publication date: December 13, 2018Inventors: Ernest L. Rister, Jr., Haibo ZHAO, Robert A. GRIGSBY, Robert B. MOORE
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Patent number: 10131737Abstract: The present disclosure provides a method for reducing the aldehyde content in an amine catalyst by treating the amine catalyst with a treating agent selected from a cyclic urea substituted with at least one isocyanate reactive group, a free radical scavenger and a mixture thereof. The treated amine catalyst may then be used in the production of polyurethane materials which exhibit reduced aldehyde emissions.Type: GrantFiled: September 30, 2014Date of Patent: November 20, 2018Assignee: HUNTSMAN PETROCHEMICAL LLCInventors: Ernest L Rister, Jr., Srinivasa S Godavarthy, Henry Robertson, Robert A Grigsby, Jr., Robert B Moore, Geert Lodewijk Dries, Eugene P Wiltz, Jr.
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Patent number: 9988483Abstract: The present disclosure relates to pyrrolidine-based catalysts for use in a polyurethane formulation. The polyurethane formulation includes the pyrrolidine-based catalyst, a compound containing an isocyanate functional group, an active hydrogen-containing compound. The use of such catalysts produces high quality polyurethane foam while reducing environmental concerns that can arise during the production of polyurethane foam as well as in the foam that is produced.Type: GrantFiled: June 24, 2015Date of Patent: June 5, 2018Assignee: HUNTSMAN PETROCHEMICAL LLCInventors: Matthew W. Forkner, Robert A. Grigsby, Jr., Eugene P. Wiltz, Jr., Ernest L. Rister, Jr., Frank Rodriguez, Howard P. Klein
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Patent number: 9856344Abstract: The present disclosure provides a method for reducing the aldehyde content in an amine catalyst by treating the amine catalyst with an organic acid. The organic acid-treated amine catalyst may then be used in the production of polyurethane materials which exhibit reduced aldehyde emissions.Type: GrantFiled: August 26, 2014Date of Patent: January 2, 2018Assignee: HUNTSMAN PETROCHEMICAL LLCInventors: Frank Rodriguez, Robert A Grigsby, Jr., Eugene P Wiltz, Jr., Ernest L Rister, Jr., Bhajendra N Barman
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Publication number: 20170101501Abstract: The present disclosure relates to pyrrolidine-based catalysts for use in a polyurethane formulation. The polyurethane formulation includes the pyrrolidine-based catalyst, a compound containing an isocyanate functional group, an active hydrogen-containing compound. The use of such catalysts produces high quality polyurethane foam while reducing environmental concerns that can arise during the production of polyurethane foam as well as in in the foam that is produced.Type: ApplicationFiled: June 24, 2015Publication date: April 13, 2017Inventors: Matthew W. FORKNER, Robert A. GRIGSBY, Jr., Eugene P. WILTZ, Jr., Ernest L. RISTER, Jr., Frank RODRIGUEZ, Howard P. KLEIN
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Publication number: 20160200854Abstract: The present disclosure provides a method for reducing the aldehyde content in an amine catalyst by treating the amine catalyst with a treating agent selected from a cyclic urea substituted with at least one isocyanate reactive group, a free radical scavenger and a mixture thereof. The treated amine catalyst may then be used in the production of polyurethane materials which exhibit reduced aldehyde emissions.Type: ApplicationFiled: September 30, 2014Publication date: July 14, 2016Inventors: Ernest L Rister, JR., Srinivasa S Godavarthy, Henry Robertson, Robert A Grigsby, JR., Robert B Moore, Geert Lodewijk Dries, Eugene P Wiltz, JR.
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Publication number: 20160159966Abstract: The present disclosure provides a method for reducing the aldehyde content in an amine catalyst by treating the amine catalyst with an organic acid. The organic acid-treated amine catalyst may then be used in the production of polyurethane materials which exhibit reduced aldehyde emissions.Type: ApplicationFiled: August 26, 2014Publication date: June 9, 2016Inventors: Frank Rodriguez, Robert A Grigsby, JR., Eugene P Wiltz, JR., Ernest L Rister, JR., Bhajendra N Barman
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Patent number: 9221967Abstract: Embodiments of the present invention disclose polymeric dispersants that are the reaction product of a polymeric acid and a hydrophilic amine.Type: GrantFiled: November 12, 2010Date of Patent: December 29, 2015Assignee: HUNTSMAN PETROCHEMICAL LLCInventors: Janice S. Walker, David C. Alexander, Ernest L. Rister, Jr., Robert B. Moore
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Publication number: 20120309884Abstract: Embodiments of the present invention disclose polymeric dispersants that are the reaction product of a polymeric acid and a hydrophilic amine.Type: ApplicationFiled: November 12, 2010Publication date: December 6, 2012Applicant: Huntsman Petrochemical LLCInventors: Janice S. Walker, David C. Alexander, Ernest L. Rister, JR., Robert B. Moore
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Patent number: 8093309Abstract: A foam includes a white color that is suitable for use in marine flotation devices. The foam includes a methylene diphenyl diisocyanate and polymethylene diphenyl diisocyanate. In some embodiments, the foam also includes a polyol, surfactant, catalyst, and blowing agent.Type: GrantFiled: July 24, 2007Date of Patent: January 10, 2012Assignee: Huntsman Petrochemical LLCInventors: Ernest L. Rister, Jr., Alan J. Hamilton, Richard R. Romero
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Publication number: 20110009512Abstract: A tertiary amine, such as a tertiary amine catalyst that is useful in the production of polyurethanes, may undergo decomposition, which may result in the production of undesirable products. These tertiary amines, however, may be treated with a primary amine containing material to reduce the presence of the undesirable products to an acceptable level. Thus, a foam made from a treated tertiary amine will also have a reduction in the presence of the same undesirable products.Type: ApplicationFiled: March 18, 2009Publication date: January 13, 2011Applicant: Huntsman Petrochemical LLCInventors: Robert A. Grigsby, JR., Ernest L. Rister, JR., Wei-Yang Su, Eugene P. Wiltz, JR., Robert B. Moore
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Publication number: 20100099785Abstract: Methods and compositions are provided for forming a catalyst. In one aspect, the catalyst is formed by mixing at least one tertiary amine with at least one polymer acid. Such catalysts are particularly useful in the polymerization of polyurethane foams.Type: ApplicationFiled: January 18, 2008Publication date: April 22, 2010Applicant: Huntsman Petrochemical CorporationInventors: Ernest L. Rister, JR., Robert A. Grigsby, JR., Robert B. Moore
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Patent number: 7049265Abstract: Disclosed herein are compositions useful for introducing metal carboxylate salts as catalysts into systems useful for producing polyurethane and polyisocyanurate foams. The methods permit the introduction of such catalysts in the absence of substantial amounts of water which otherwise cause inferior foams to be produced. A method for producing foam employing the catalysts are also described.Type: GrantFiled: July 30, 2003Date of Patent: May 23, 2006Assignee: Huntsman Petrochemical CorporationInventors: Robert A. Grigsby, Jr., Robert L. Zimmerman, Ernest L. Rister, Jr.
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Patent number: 6534555Abstract: Provided are catalyst systems which produce flexible polyurethane polyester foams that are color stable, are lower in odor, and uses less catalysts than current most commonly practiced technology. The use of lower amounts of catalysts with low vapor pressure reduces worker exposure to alkaline corrosive materials, reduces pollution through less pounds of volatile organic chemicals (VOC's) and is less expensive.Type: GrantFiled: September 10, 2001Date of Patent: March 18, 2003Assignee: Huntsman Petrochemical CorporationInventors: Ernest L. Rister, Jr., Robert A. Grigsby, Jr., Robert L. Zimmerman
