Patents by Inventor Mitchell D. Refvik

Mitchell D. Refvik 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).

  • Publication number: 20130240780
    Abstract: The present invention discloses processes for forming polythiol compositions from olefinic hydrocarbons such as cyclooctadiene, cyclododecatriene, and trivinylcyclohexane. The polythiol compositions produced from these processes, including the sulfur-containing compounds of these compositions, also are described.
    Type: Application
    Filed: May 10, 2013
    Publication date: September 19, 2013
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Michael S. Matson, Colin Cameron, Alastair Robert Marrion, Anthony Colin Wright, Mitchell D. Refvik, Eric J. Netemeyer
  • Patent number: 8461293
    Abstract: The present invention discloses processes for forming polythiol compositions from olefinic hydrocarbons such as cyclooctadiene, cyclododecatriene, and trivinylcyclohexane. The polythiol compositions produced from these processes, including the sulfur-containing compounds of these compositions, also are described.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: June 11, 2013
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Michael S. Matson, Mitchell D Refvik, Eric J Netemeyer, Colin Cameron, Alastair Robert Marrion, Anthony Colin Wright
  • Publication number: 20120035291
    Abstract: The present invention discloses processes for forming polythiol compositions from olefinic hydrocarbons such as cyclooctadiene, cyclododecatriene, and trivinylcyclohexane. The polythiol compositions produced from these processes, including the sulfur-containing compounds of these compositions, also are described.
    Type: Application
    Filed: August 3, 2010
    Publication date: February 9, 2012
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Michael S. Matson, Mitchell D. Refvik, Eric J. Netemeyer, Colin Cameron, Alastair Robert Marrion, Anthony Colin Wright
  • Publication number: 20110251358
    Abstract: The present invention discloses compositions comprising oligomers derived from bis(beta-hydroxy)polysulfides, such as dihydroxydiethyl disulfide, and oligomerization processes for producing these compositions.
    Type: Application
    Filed: April 11, 2011
    Publication date: October 13, 2011
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Jim D. Byers, Michael S. Matson, Mitchell D. Refvik
  • Patent number: 8003748
    Abstract: Polythiourethane polymer compositions, methods of making the polythiourethane polymer compositions, and methods of using the polythiourethane polymer compositions are provided. The polythiourethane can be produced by contacting a thiol ester composition and an isocyanate to produce a mixture and then heating the mixture to produce the polythiourethane polymer. In some embodiments, the thiol ester compositions include thiol esters, hydroxy thiol esters, and cross-linked thiol esters.
    Type: Grant
    Filed: August 16, 2005
    Date of Patent: August 23, 2011
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Jim D. Byers, Mitchell D. Refvik, Chad W. Brown, Michael S. Matson, Michael S. Hankinson
  • Patent number: 7989655
    Abstract: Thiol ester compositions, methods of making the thiol ester compositions, and methods of using the thiol ester compositions are provided. In some embodiments, the thiol ester compositions include thiol esters, hydroxy thiol esters and cross-linked thiol esters. The thiol ester composition can be used to produce cross-linked thiol esters, sulfonic acid-containing esters, sulfonate containing esters and thioacrylate containing esters. The thiol ester compositions can be used to produce polythiourethanes. The polythiourethanes can be used in fertilizers and fertilizer coatings.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: August 2, 2011
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Mitchell D. Refvik, Daniel M. Hasenberg, Michael S. Hankinson, Michael S. Matson, Dale M. Solaas, Steven J. Herron, Jim D. Byers
  • Patent number: 7910666
    Abstract: Mercaptan-hardened epoxy polymer compositions, methods of making the mercaptan-hardened epoxy polymer compositions, and methods of using the mercaptan-hardened epoxy polymer compositions are provided. The mercaptan-hardened epoxy polymer can be produced by contacting a thiol ester composition and an epoxide composition to produce a mixture and then heating the mixture to produce the mercaptan-hardened epoxy polymer. In some embodiments, the thiol ester compositions include thiol esters, hydroxy thiol esters, and crosslinked thiol esters. Adhesive polymer compositions, methods of making the adhesive polymer compositions, and methods of using the adhesive polymer compositions are provided. The adhesive polymer composition can be produced by contacting a thiol ester composition and an epoxide composition to produce a mixture and then heating the mixture to produce the adhesive polymer composition.
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: March 22, 2011
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Jim D. Byers, Mitchell D. Refvik, Chad E. Brown, Michael S. Matson
  • Patent number: 7781484
    Abstract: Thiol ester compositions, methods of making the thiol ester compositions, and methods of using the thiol ester compositions are provided. In some embodiments, the thiol ester compositions include thiol esters, hydroxy thiol esters and cross-linked thiol esters. The thiol ester composition can be used to produce cross-linked thiol esters, sulfonic acid-containing esters, sulfonate containing esters and thioacrylate containing esters. The thiol ester compositions can be used to produce polythiourethanes. The polythiourethanes can be used in fertilizers and fertilizer coatings.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: August 24, 2010
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Jim D. Byers, Mitchell D. Refvik, Chad W. Brown
  • Patent number: 7713326
    Abstract: Thiol ester compositions, methods of making the thiol ester compositions, and methods of using the thiol ester compositions are provided. In some embodiments, the thiol ester compositions include thiol esters, hydroxy thiol esters and cross-linked thiol esters. The thiol ester composition can be used to produce cross-linked thiol esters, sulfonic acid-containing esters, sulfonate containing esters and thioacrylate containing esters. The thiol ester compositions can be used to produce polythiourethanes. The polythiourethanes can be used in fertilizers and fertilizer coatings.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: May 11, 2010
    Assignee: Agrium Inc.
    Inventors: Leslie E. Carstens, Baozhong Xing, Mitchell D. Refvik, Jim D. Byers
  • Patent number: 7645906
    Abstract: A process and graded catalyst bed for selectively producing methyl mercaptan from methanol. The methanol is reacted with hydrogen sulfide, in the presence of a graded catalyst bed containing at least three types of nickel or cobalt molybdenum alumina catalysts to convert the methanol to methyl mercaptan in one-pass. At least one of the hydrotreating catalysts can contain aluminium phosphate. Use of the graded catalyst bed prevents the formation of a hot spot within the graded catalyst bed. The methyl mercaptan having less than about 30 wt. % unreacted methanol contained therein.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: January 12, 2010
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Daniel M Hasenberg, Mitchell D Refvik
  • Patent number: 7585932
    Abstract: Poly(?-thioether ester) compositions, methods of making the poly(?-thioether ester) compositions, and methods of using the poly(?-thioether ester) compositions are provided. The poly(?-thioether ester) can be produced by contacting a thiol ester composition and an ?,?-unsaturated ester to produce a mixture and then heating the mixture to produce the poly(?-thioether ester). In some embodiments, the thiol ester compositions include thiol esters, hydroxy thiol esters, and cross-linked thiol esters.
    Type: Grant
    Filed: August 14, 2006
    Date of Patent: September 8, 2009
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Jim D Byers, Mitchell D Refvik, Chad W Brown, Michael S Matson
  • Patent number: 7557236
    Abstract: Thiol ester compositions, methods of making the thiol ester compositions, and methods of using the thiol ester compositions are provided. In some embodiments, the thiol ester compositions include thiol esters, hydroxy thiol esters and cross-linked thiol esters. The thiol ester composition can be used to produce cross-linked thiol esters, sulfonic acid-containing esters, sulfonate containing esters and thioacrylate containing esters. The thiol ester compositions can be used to produce polythiourethanes. The polythiourethanes can be used in fertilizers and fertilizer coatings.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: July 7, 2009
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Chad W. Brown, Mitchell D. Refvik, Steven J. Herron
  • Publication number: 20090124784
    Abstract: The present techniques relate to formulations that include a first part containing active molecules that have an average of at least one thiol group per active molecule and an average of at least one hydroxyl group per active molecule, and a second part containing monomer molecules that have an average of at least two isocyanate groups per monomer molecule. The composition may be mixed with a catalyst composition that contains at least one amine catalyst and at least one metal catalyst. This mixed catalyst composition will substantially cure a mixture of the first part and the second part within less than about 48 hours at ambient temperature.
    Type: Application
    Filed: November 8, 2007
    Publication date: May 14, 2009
    Inventors: Chad W. Brown, Mitchell D. Refvik, Jim D. Byers, Roger A. Patton, Adrian Pullen, John F. Martin
  • Publication number: 20090124762
    Abstract: The present techniques relate to thiourethane compositions formed by reacting a reactive composition containing active molecules having an average of at least one thiol group per active molecule and an average of at least one hydroxyl group per active molecule with a monomer composition containing monomer molecules having an average of at least two isocyanate groups per monomer molecule. The reactions are performed in the presence of an amine catalyst, which may preferentially react thiol groups over hydroxyl groups, thus forming a thiourethane composition having, on average, more hydroxyl groups than thiol groups and more thiourethane groups than urethane groups, on a normalized basis.
    Type: Application
    Filed: November 8, 2007
    Publication date: May 14, 2009
    Inventors: Chad W. Brown, Mitchell D. Refvik, Jim D. Byers, Roger A. Patton
  • Publication number: 20080242894
    Abstract: A process and graded catalyst bed for selectively producing methyl mercaptan from methanol. The methanol is reacted with hydrogen sulfide, in the presence of a graded catalyst bed containing at least three types of nickel or cobalt molybdenum alumina catalysts to convert the methanol to methyl mercaptan in one-pass. At least one of the hydrotreating catalysts can contain aluminium phosphate. Use of the graded catalyst bed prevents the formation of a hot spot within the graded catalyst bed. The methyl mercaptan having less than about 30 wt. % unreacted methanol contained therein.
    Type: Application
    Filed: March 27, 2007
    Publication date: October 2, 2008
    Inventors: Daniel M. Hasenberg, Mitchell D. Refvik
  • Publication number: 20080214774
    Abstract: Thiourethane prepolymer compositions, thiourethane polymer compositions, methods of making the compositions, and methods of using the thiourethane polymer compositions are provided. The thiourethane polymer composition can be produced by contacting a thiol ester composition and an isocyanate composition to produce a prepolymer composition and then curing the prepolymer composition to produce the thiourethane polymer composition. The prepolymer composition can also include a property modifying agent. In some embodiments, the thiol ester compositions include thiol esters, hydroxy thiol esters, and cross-linked thiol esters.
    Type: Application
    Filed: March 1, 2007
    Publication date: September 4, 2008
    Inventors: Chad W. Brown, Jim D. Byers, Mitchell D. Refvik
  • Patent number: 7399893
    Abstract: A process and catalyst blend for selectively producing mercaptans and sulfides from alcohols. The alcohol is reacted with hydrogen sulfide, in the presence of a catalyst blend containing a hydrotreating catalyst and a dehydration catalyst to convert the alcohol to mercaptan or sulfide in one-pass. The alcohols can include primary and secondary alcohols. The mercaptan or sulfide having less than about 30% unreacted alcohol contained therein.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: July 15, 2008
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Daniel M. Hasenberg, Mitchell D. Refvik
  • Patent number: 7326820
    Abstract: Removing impurities from a heptane stream by contacting the heptane stream with an acidic catalyst, wherein the contacting reduces a concentration of one or more close boiling impurities, one or more olefins, or both. The impurities are isomerized via contact with the acidic catalyst into species that possess lower octane levels or that do not possess boiling points as near to the boiling point of n-heptane, which promotes separation of the impurities via distillation. Close boiling impurities may include such compounds as cis-1,2-dimethylcyclopentane and methylcyclohexane or may be compounds having boiling points at a standard pressure of 760 Torr in the range of about 96.5 to about 100.5 degrees Celsius including such compounds as cis-1,2-dimethylcyclopentane and methylcyclohexane. The concentration of cis-1,2-dimethylcyclopentane and methylcyclohexane may be reduced by at least about 25 and 10 percent by weight, respectively.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: February 5, 2008
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Daniel M. Hasenberg, Mitchell D. Refvik, Christopher Raymond Tully, Michael S. Hankinson, Clyde Stewart Denton, Dale Solaas
  • Patent number: 7217843
    Abstract: A process for selectively making 2-thiols from alpha olefins is described. The process includes contacting a linear or branched alpha olefin having with H2S in the presence of a catalyst and recovering the 2-thiol from a product mixture. The catalyst includes a support and at least one metal selected from Group IIIA-VIIIA and the branched olefin is branched at the 3-position or higher with respect to the olefin double bond. Compositions wherein the 2-thiols are substantially free of 1-thiol and 3-thiol isomers are also described.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: May 15, 2007
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Daniel M. Hasenberg, Mitchell D. Refvik
  • Patent number: 6852901
    Abstract: A process is provided to produce a 2-alkene product from a 1-alkene-containing feed stream. The process comprises contacting the 1-alkene-containing feed stream in a reactor zone to isomerize the 1-alkene-containing feed stream to produce the 2-alkene product. More specifically, a process is provided to produce a 2-butene product from a 1-butene containing feed stream.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: February 8, 2005
    Assignee: Chevron Phillips Chemical Company
    Inventors: Dan M. Hasenberg, Mitchell D. Refvik, Michael S. Matson