Patents by Inventor Andrew M. Lemonds

Andrew M. Lemonds 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).

  • Ammonium bisulfate catalyzed dehydration of beta-hydroxy acids
    Patent number: 9701610
    Abstract: Hydroxycarboxylic acids, e.g., 3-hydroxypropionic acid, and/or their ammonium salts are dehydrated to their corresponding unsaturated carboxylic acids, e.g., acrylic acid, by a process that uses a catalyst comprising ammonium bisulfate. The use of ammonium bisulfate reduces or eliminates the problems associated with processes that use sulfuric acid as a dehydrating catalyst, e.g, excess sulfuric acid consumption and/or recovery.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: July 11, 2017
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Leonard E. Bogan, Jr., Mark A. Silvano, Raymond P. Roach, Sarah M. Hoyt, Robert Tengler, David C. Decoster, Sanjib Biswas, Muhunthan Sathiosatham, Sarah L. Hruby, Andrew M. Lemonds
  • Ammonium Bisulfate Catalyzed Dehydration of Beta-Hydroxy Acids
    Publication number: 20160244395
    Abstract: Hydroxycarboxylic acids, e.g., 3-hydroxypropionic acid, and/or their ammonium salts are dehydrated to their corresponding unsaturated carboxylic acids, e.g., acrylic acid, by a process that uses a catalyst comprising ammonium bisulfate. The use of ammonium bisulfate reduces or eliminates the problems associated with processes that use sulfuric acid as a dehydrating catalyst, e.g, excess sulfuric acid consumption and/or recovery.
    Type: Application
    Filed: October 14, 2014
    Publication date: August 25, 2016
    Applicant: Dow Global Technologies LLC
    Inventors: Leonard E. Bogan, Jr., Mark A. Silvano, Raymond P. Roach, Sarah M. Hoyt, Robert Tengler, David C. Decoster, Sanjib Biswas, Muhunthan Sathiosatham, Sarah L. Hruby, Andrew M. Lemonds
  • PROCESS FOR PRODUCTION OF METHACRYLIC ACID ESTERS
    Publication number: 20160102043
    Abstract: A method for producing ?-, ?-unsaturated carboxylic acid esters in high yield from acetone cyanohydrin and sulfuric acid through the separation and concurrent catalytic conversion of reaction side products to additional ?-, ?-unsaturated carboxylic acid ester product. The catalyst comprises at least one Group IA element, and boron as a promoter, on a porous support.
    Type: Application
    Filed: June 17, 2014
    Publication date: April 14, 2016
    Inventors: Andrew M. Lemonds, Jinsuo Xu
  • Process for producing MMA and/or MAA from acetone cyanohydrin and sulfuric acid
    Patent number: 9260368
    Abstract: A multistage process for the preparation of methacrylic acid and esters thereof via the hydrolysis of ACH, cracking the hydrolysis products, and converting the cracked products to the desired acid or ester, wherein the average temperature in the first hydrolysis reactor is from 55 C to 70 C.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: February 16, 2016
    Assignee: Rohm and Haas Company
    Inventors: Andrew M. Lemonds, Minh N. Ngo, Muhunthan Sathiosatham, Donald Lee Zolotorofe
  • Process for production of methacrylic acid esters
    Patent number: 9199910
    Abstract: A method for producing ?-, ?-unsaturated carboxylic acid esters in high yield from reaction by-product streams via the catalytic conversion of the by-products to additional ?-, ?-unsaturated carboxylic acid ester product. The catalyst comprises cesium, and phosphorous as a promoter, on a porous support.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: December 1, 2015
    Inventors: Andrew M. Lemonds, Jinsuo Xu
  • PROCESS FOR PRODUCING MMA AND/OR MAA FROM ACETONE CYANOHYDRIN AND SULFURIC ACID
    Publication number: 20150259272
    Abstract: A multistage process for the preparation of methacrylic acid and esters thereof via the hydrolysis of ACH, cracking the hydrolysis products, and converting the cracked products to the desired acid or ester, wherein the average temperature in the first hydrolysis reactor is from 55 C to 70 C.
    Type: Application
    Filed: September 9, 2013
    Publication date: September 17, 2015
    Inventors: Andrew M. Lemonds, Minh N. Ngo, Muhunthan Sathiosatham, Donald Lee Zolotorofe
  • PROCESS FOR PRODUCTION OF METHACRYLIC ACID ESTERS
    Publication number: 20150141694
    Abstract: A method for producing ?-, ?-unsaturated carboxylic acid esters in high yield from reaction by-product streams via the catalytic conversion of the by-products to additional ?-, ?-unsaturated carboxylic acid ester product. The catalyst comprises cesium, and phosphorous as a promoter, on a porous support.
    Type: Application
    Filed: May 21, 2013
    Publication date: May 21, 2015
    Inventors: Andrew M. Lemonds, Jinsuo Xu
  • Process for the (AMM)oxidation of lower molecular weight alkanes and alkenes
    Patent number: 9035092
    Abstract: A process for producing unsaturated carboxylic acids or unsaturated nitriles by vapor phase oxidation reaction of their corresponding C3 to C5 alkanes, C3 to C5 alkenes, and mixtures thereof, as a hydrocarbon starting material, wherein the process performance is monitored and the path of gasses through catalyst beds is altered. Improved catalyst lifetimes may be achieved.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: May 19, 2015
    Inventors: Scott Han, Edward C. Bayer, Andrew M. Lemonds, Daniel J. Martenak, Nelson I. Quiros
  • Process for production of methacrylic acid ester having increased yield
    Patent number: 9000211
    Abstract: This invention provides a method for producing ?,?-unsaturated carboxylic acid esters in high yield from acetone cyanohydrin and sulfuric acid through the separation and concurrent catalytic conversion of reaction side products to additional ?,?-unsaturated carboxylic acid ester product. The catalyst comprises at least one Group IA element and may include a porous support and/or a promoter element selected from at least one of phosphorous, boron, titanium, zinc, zirconium, tin, bismuth, cerium, and alkaline earth metals.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: April 7, 2015
    Inventors: Andrew M. Lemonds, Jinsuo Xu
  • PROCESS FOR THE (AMM)OXIDATION OF LOWER MOLECULAR WEIGHT ALKANES AND ALKENES
    Publication number: 20140350298
    Abstract: A process for producing unsaturated carboxylic acids or unsaturated nitriles by vapor phase oxidation reaction of their corresponding C3 to C5 alkanes, C3 to C5 alkenes, and mixtures thereof, as a hydrocarbon starting material, wherein the process performance is monitored and the path of gasses through catalyst beds is altered. Improved catalyst lifetimes may be achieved.
    Type: Application
    Filed: August 23, 2012
    Publication date: November 27, 2014
    Applicant: Rohm And Haas Company
    Inventors: Scott Han, Edward C. Bayer, Andrew M. Lemonds, Daniel J. Martenak, Nelson I. Quiros
  • PROCESS FOR PRODUCTION OF METHACRYLIC ACID ESTER HAVING INCREASED YIELD
    Publication number: 20130338396
    Abstract: This invention provides a method for producing ?,?-unsaturated carboxylic acid esters in high yield from acetone cyanohydrin and sulfuric acid through the separation and concurrent catalytic conversion of reaction side products to additional ?,?-unsaturated carboxylic acid ester product. The catalyst comprises at least one Group IA element and may include a porous support and/or a promoter element selected from at least one of phosphorous, boron, titanium, zinc, zirconium, tin, bismuth, cerium, and alkaline earth metals.
    Type: Application
    Filed: October 4, 2011
    Publication date: December 19, 2013
    Applicant: ROHM AND HAAS COMPANY
    Inventors: Andrew M. Lemonds, Jinsuo Xu
  • Process for recovering valued compounds from a stream derived from purification of methyl methacrylate
    Patent number: 8183406
    Abstract: The present invention provides a method for extractive recovery and conversion of selected compounds, such as methacrylic acid (MAA) and 2-methacrylamide (MAM), from a stream derived from purification of methyl methacrylate (MMA) or methacrylic acid (MAA) produced via a conventional ACH route process.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: May 22, 2012
    Inventors: Andrew M. Lemonds, Jinsuo Xu
  • Process for recovering valued compounds from a stream derived from purification of methyl methacrylate
    Publication number: 20110077424
    Abstract: The present invention provides a method for extractive recovery and conversion of selected compounds, such as methacrylic acid (MAA) and 2-methacrylamide (MAM), from a stream derived from purification of methyl methacrylate (MMA) or methacrylic acid (MAA) produced via a conventional ACH route process.
    Type: Application
    Filed: September 13, 2010
    Publication date: March 31, 2011
    Inventors: Andrew M. Lemonds, Jinsuo Xu