Patents by Inventor Prakasa R. Anantaneni

Prakasa R. Anantaneni 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).

  • Patent number: 9598358
    Abstract: Acylalkylisethionate esters are produced by reacting one or more carboxylic acids with one or more alkyl-substituted hydroxyalkyl sulfonates under esterification reaction conditions. The alkyl-substituted hydroxyalkyl sulfonates used as a raw material in producing the esters are prepared by reacting bisulfate with one or more alkylene oxides. The acylalkylisethionate esters may be used in consumer products.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: March 21, 2017
    Assignee: HUNTSMAN PETROCHEMICAL LLC
    Inventors: Prakasa R. Anantaneni, John Gray, Marty J. Renner, George A. Smith, David C. Lewis, Donald H. Champion, Christopher J. Whewell
  • Patent number: 8580723
    Abstract: Methods and compositions are provided for forming ester based compositions. The ester based compositions may be used in consumer products. In one aspect, a method is provided for producing acyl alkylisethionate esters by the esterification of a sulfonate composition having two or more sulfonate isomers with fatty acid(s). In another aspect, a method is provided for forming an ester based composition including a blend of acyl alkylisethionate and acylisethionate esters.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: November 12, 2013
    Assignee: Huntsman Petrochemical LLC
    Inventors: Prakasa R. Anantaneni, George A. Smith, Martin J. Renner
  • Publication number: 20120094890
    Abstract: Methods and compositions are provided for forming ester based compositions. The ester based compositions may be used in consumer products. In one aspect, a method is provided for producing acyl alkylisethionate esters by the esterification of a sulfonate composition having two or more sulfonate isomers with fatty acid(s). In another aspect, a method is provided for forming an ester based composition including a blend of acyl alkylisethionate and acylisethionate esters.
    Type: Application
    Filed: December 20, 2011
    Publication date: April 19, 2012
    Applicant: Huntsman Petrochemical LLC
    Inventors: Prakasa R. Anantaneni, George A. Smith, Martin J. Renner
  • Patent number: 8105993
    Abstract: Methods and compositions are provided for forming ester based compositions. The ester based compositions may be used in consumer products. In one aspect, a method is provided for producing acyl alkylisethionate esters by the esterification of a sulfonate composition having two or more sulfonate isomers with fatty acid(s). In another aspect, a method is provided for forming an ester based composition including a blend of acyl alkylisethionate and acylisethionate esters.
    Type: Grant
    Filed: May 1, 2007
    Date of Patent: January 31, 2012
    Assignee: Huntsman Petrochemical LLC
    Inventors: Prakasa R. Anantaneni, George A. Smith, Martin J. Renner
  • Publication number: 20110257072
    Abstract: Acylalkylisethionate esters are produced by reacting one or more carboxylic acids with one or more alkyl-substituted hydroxyalkyl sulfonates under esterification reaction conditions. The alkyl-substituted hydroxyalkyl sulfonates used as a raw material in producing the esters are prepared by reacting bisulfate with one or more alkylene oxides. The acylalkylisethionate esters may be used in consumer products.
    Type: Application
    Filed: June 28, 2011
    Publication date: October 20, 2011
    Inventors: Prakasa R. Anantaneni, John Gray, Marty J. Renner, George A. Smith, David C. Lewis, Donald H. Champion, Christopher J. Whewell
  • Patent number: 8008239
    Abstract: The present invention provides acylalkylisethionate esters useful in consumer products. The acylalkylisethionate esters are produced by reacting one or more carboxylic acids with one or more alkyl-substituted hydroxyalkyl sulfonates under esterification reaction conditions. The alkyl-substituted hydroxyalkyl sulfonates used as a raw material in producing the esters are prepared by reacting bisulfite with one or more alkylene oxides.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: August 30, 2011
    Assignee: Huntsman Petrochemical LLC
    Inventors: Prakasa R. Anantaneni, John Gray, Marty J. Renner, George A. Smith, David C. Lewis, Donald H. Champion, Christopher J. Whewell
  • Publication number: 20100215610
    Abstract: Methods and compositions are provided for forming ester based compositions. The ester based compositions may be used in consumer products. In one aspect, a method is provided for producing acyl alkylisethionate esters by the esterification of a sulfonate composition having two or more sulfonate isomers with fatty acid(s). In another aspect, a method is provided for forming an ester based composition including a blend of acyl alkylisethionate and acylisethionate esters.
    Type: Application
    Filed: May 1, 2007
    Publication date: August 26, 2010
    Applicant: Huntsman Petrochemical Corporation
    Inventors: Prakasa R. Anantaneni, George A. Smith, Martin J. Renner
  • Publication number: 20080234159
    Abstract: The present invention provides acylalkylisethionate esters useful in consumer products. The acylalkylisethionate esters are produced by reacting one or more carboxylic acids with one or more alkyl-substituted hydroxyalkyl sulfonates under esterification reaction conditions. The alkyl-substituted hydroxyalkyl sulfonates used as a raw material in producing the esters are prepared by reacting bisulfite with one or more alkylene oxides.
    Type: Application
    Filed: August 11, 2004
    Publication date: September 25, 2008
    Applicant: Huntsman Petrochemical Corporation
    Inventors: Prakasa R. Anantaneni, John Gray, Marty J. Renner, George A. Smith, David C. Lewis, Donald H. Champion, Christopher J. Whewell
  • Patent number: 7008914
    Abstract: This invention is directed to a fluorine-containing mordenite catalyst and use thereof in the manufacture of alkylbenzene (LAB) by alkylation of benzene with an olefin. The olefin may have from about 10 to 14 carbons. The fluorine-containing mordenite is prepared typically by treatment with an aqueous hydrogen fluoride solution. The benzene alkylation may be conducted using reactive distillation. This invention is also directed to a process for production of LAB having a high 2-phenyl isomer content by use of the fluorine-containing mordenite in conjunction with a conventional solid LAB alkylation catalyst. The two catalysts may be used in a mixed catalyst bed or may be packed in series, with the relative proportions being adjusted to provide a desired 2-phenyl isomer content of in the final product.
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: March 7, 2006
    Assignee: Huntsman Petrochemical Corporation
    Inventors: George A. Smith, Prakasa R. Anantaneni, Samir S. Ashrawi, Raeda M. Smadi, John F. Knifton, Melvin Stockton
  • Patent number: 6995127
    Abstract: This invention is directed to detergent compositions which employ sulfonated alkyltoluenes as surfactants, wherein the sulfonated alkyltoluenes have a higher content of the sulfonated 2-phenyl alkyltoluenes isomers than was previously available in sulfonated alkyltoluene surfactants of the prior art. Cleaning compositions according to the invention are more effective as cleaning agents over their counterparts of prior art which contain sulfonated alkyltoluenes having lower contents of the 2-phenyl alkyltoluene isomers, owing to an unexpected increase in tolerance of water hardness minerals normally associated with precipitation of the active detergent agent. Solid sulfonate salts of alkyltoluenes are also provided, including dry cleaning formulations containing same.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: February 7, 2006
    Assignee: Huntsman Petrochemical Corporation
    Inventors: George A. Smith, Prakasa R. Anantaneni, Samir S. Ashrawi, Raeda M. Smadi
  • Patent number: 6887839
    Abstract: This invention is directed to detergent compositions which employ sulfonated linear alkylbenzenes as surfactants, wherein the sulfonated linear alkylbenzenes have a higher content of the sulfonated 2-phenyl alkylbenzene isomers than was previously available in sulfonated phenyl alkylbenzene surfactants of the prior art. Cleaning compositions according to the invention are more effective as cleaning agents over their counterparts of prior art which contain sulfonated linear alkylbenzenes having lower contents of the 2-phenyl alkylbenzene isomers, owing to an unexpected increase in tolerance of water hardness minerals normally associated with precipitation of the active detergent agent. Solid sulfonate salts of alkylbenzenes are also provided, including dry formulations containing same.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: May 3, 2005
    Assignee: Huntsman Petrochemical Corporation
    Inventors: George A. Smith, Samir S. Ashrawi, Raeda M. Smadi, Prakasa R. Anantaneni
  • Patent number: 6849588
    Abstract: Provided herein are structured liquid surfactants produced using a linear alkylbenzene sulfonate having various levels of 2-isomer content.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: February 1, 2005
    Assignee: Huntsman Petrochemical Corporation
    Inventors: Curtis M. Elsik, George A. Smith, Samir S. Ashrawi, Prakasa R. Anantaneni, Christopher J. Whewell
  • Publication number: 20040127742
    Abstract: Provided herein is a class of compounds with surfactant properties known as alcohol ether sulfonates. These materials are produced according to the present invention by reaction of isethionic acid or its halo-derivative with an alcohol. An alcohol ether sulfonate according to the invention is useful as a component of a finished surfactant formulation useful for cleaning hard surfaces, laundry, and dishes, among other things.
    Type: Application
    Filed: October 21, 2003
    Publication date: July 1, 2004
    Applicant: Huntsman Petrochemical Corporation
    Inventors: Prakasa R. Anantaneni, Samir S. Ashrawi, David C. Lewis, George A. Smith
  • Publication number: 20040009882
    Abstract: Provided herein are structured liquid surfactants produced using a linear alkylbenzene sulfonate having various levels of 2-isomer content.
    Type: Application
    Filed: May 9, 2003
    Publication date: January 15, 2004
    Applicant: Huntsman Petrochemical Corporation
    Inventors: Curtis M. Elsik, George A. Smith, Samir S. Ashrawi, Prakasa R. Anantaneni, Christopher J. Whewell
  • Patent number: 6630430
    Abstract: This invention is directed to lubricating compositions which contain detergent components derived from linear alkylbenzenes including sulfonates and salts and esters thereof. Detergents provided by the invention have a higher content of the 2-phenyl alkylbenzene isomers than was previously available in materials of prior art. The detergents of the present invention are more powerful detergents over those previously available and may be employed as additives in various lubricating compositions, including motor oils, cutting fluids, emulsions, and motor fuels.
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: October 7, 2003
    Assignee: Huntsman Petrochemical Corporation
    Inventors: Prakasa R. Anantaneni, George A. Smith
  • Publication number: 20030186831
    Abstract: This invention is directed to detergent compositions which employ sulfonated linear alkylbenzenes as surfactants, wherein the sulfonated linear alkylbenzenes have a higher content of the sulfonated 2-phenyl alkylbenzene isomers than was previously available in sulfonated phenyl alkylbenzene surfactants of the prior art. Cleaning compositions according to the invention are more effective as cleaning agents over their counterparts of prior art which contain sulfonated linear alkylbenzenes having lower contents of the 2-phenyl alkylbenzene isomers, owing to an unexpected increase in tolerance of water hardness minerals normally associated with precipitation of the active detergent agent. Solid sulfonate salts of alkylbenzenes are also provided, including dry formulations containing same.
    Type: Application
    Filed: February 19, 2003
    Publication date: October 2, 2003
    Applicant: Huntsman Petrochemical Corporation
    Inventors: George A. Smith, Samir S. Ashrawi, Raeda M. Smadi, Prakasa R. Anantaneni
  • Publication number: 20030166481
    Abstract: This invention is directed to a fluorine-containing mordenite catalyst and use thereof in the manufacture of alkylbenzene (LAB) by alkylation of benzene with an olefin. The olefin may have from about 10 to 14 carbons. The fluorine-containing mordenite is prepared typically by treatment with an aqueous hydrogen fluoride solution. The benzene alkylation may be conducted using reactive distillation. This invention is also directed to a process for production of LAB having a high 2-phenyl isomer content by use of the fluorine-containing mordenite in conjunction with a conventional solid LAB alkylation catalyst. The two catalysts may be used in a mixed catalyst bed or may be packed in series, with the relative proportions being adjusted to provide a desired 2-phenyl isomer content of in the final product.
    Type: Application
    Filed: October 3, 2002
    Publication date: September 4, 2003
    Applicant: Huntsman Petrochemical Corporation
    Inventors: George A. Smith, Prakasa R. Anantaneni, Samir S. Ashrawi, Raeda M. Smadi, John F. Knifton, Melvin Stockton
  • Patent number: 6562776
    Abstract: This invention is directed to detergent compositions which employ sulfonated linear alkylbenzenes as surfactants, wherein the sulfonated linear alkylbenzenes have a higher content of the sulfonated 2-phenyl alkylbenzene isomers than was previously available in sulfonated phenyl alkylbenzene surfactants of the prior art. Cleaning compositions according to the invention are more effective as cleaning agents over their counterparts of prior art which contain sulfonated linear alkylbenzenes having lower contents of the 2-phenyl alkylbenzene isomers, owing to an unexpected increase in tolerance of water hardness minerals normally associated with precipitation of the active detergent agent. Solid sulfonate salts of alkylbenzenes are also provided, including dry formulations containing same.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: May 13, 2003
    Assignee: Huntsman Petrochemical Corporation
    Inventors: George A. Smith, Samir S. Ashrawi, Raeda M. Smadi, Prakasa R. Anantaneni
  • Patent number: 5185485
    Abstract: There is disclosed an improved process for the production of linear alkylbenzene wherein monoolefins are reacted with benzene in a hydrogen fluoride catalyzed reaction followed by recovery of the alkylbenzene. An alumina treatment step is included which removes organic fluoride impurities in order to prevent release of hydrofluoric acid in downstream equipment. It has been discovered that the SO.sub.3 sulfonation color of the alkylbenzene is surprisingly improved by the use of a high selectivity basic alumina for this treatment.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: February 9, 1993
    Assignee: Monsanto Company
    Inventors: David R. Dyroff, Prakasa R. Anantaneni
  • Patent number: 5118652
    Abstract: A process of this invention for producing glyoxylate esters is carried out by contacting a with a catalyst comprising ferric phosphate on an alumina supportfeed composition comprising an oxygen containing gas and a vaporized lower alkyl ester of glycolic acid. The process of the invention can be carried out as either a fixed bed or a fluid bed operation.
    Type: Grant
    Filed: September 19, 1990
    Date of Patent: June 2, 1992
    Assignee: Monsanto Company
    Inventors: Prakasa R. Anantaneni, Tao P. Li