Patents by Inventor Sadeka Onam

Sadeka Onam 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: 11857935
    Abstract: A heterogeneous procatalyst includes a titanium species, a magnesium chloride component, and a chlorinating agent having a structure A(Cl)x(R1)3-x, where A is aluminum or boron, R1 is a (C1-C30) hydrocarbyl, and x is 1, 2, or 3. The magnesium chloride component may be thermally treated at a temperature greater than 100 C for at least 30 minutes before or after introduction of the chlorinating agent and titanium species to the heterogeneous procatalyst. The heterogeneous procatalyst having the thermally treated magnesium chloride exhibits improved average molecular weight capability. Processes for producing the heterogeneous procatalyst and processes for producing ethylene-based polymers utilizing the heterogeneous procatalyst are also disclosed.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: January 2, 2024
    Assignee: Dow Global Technologies LLC
    Inventors: Mingzhe Yu, David Gordon Barton, Kurt F. Hirsekorn, Sadeka Onam, Peter N. Nickias, Andrew T. Heitsch, Thomas H. Peterson
  • Publication number: 20210205785
    Abstract: A heterogeneous procatalyst includes a titanium species, a magnesium chloride component, and a chlorinating agent having a structure A(C)x(R1)3-x, where A is aluminum or boron, R1 is a (C1-C30) hydrocarbyl, and x is 1, 2, or 3. The magnesium chloride component may be thermally treated at a temperature greater than 100 C for at least 30 minutes before or after introduction of the chlorinating agent and titanium species to the heterogeneous procatalyst. The heterogeneous procatalyst having the thermally treated magnesium chloride exhibits improved average molecular weight capability. Processes for producing the heterogeneous procatalyst and processes for producing ethylene-based polymers utilizing the heterogeneous procatalyst are also disclosed.
    Type: Application
    Filed: May 23, 2019
    Publication date: July 8, 2021
    Applicant: Dow Global Technologies LLC
    Inventors: Mingzhe Yu, David Gordon Barton, Kurt F. Hirsekorn, Sadeka Onam, Peter N. Nickias, Andrew T. Heitsch, Thomas H. Peterson
  • Patent number: 10815331
    Abstract: The present invention discloses a polymeric polyol composition useful for making polyurethane polymers, especially polyurethane foams. Said polyurethane polymer foams demonstrate a good balance of mechanical properties, physical properties, and low emissions. The polymeric polyol composition is the reaction product(s) of (i) a polyamine initiator composition comprising the polymerization product(s) of aminoethylpiperazine with (ii) at least one epoxide compound, at least one glycidyl ether compound, or mixtures thereof.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: October 27, 2020
    Assignee: Dow Global Technologies LLC
    Inventors: Michael T. Malanga, Sabrina Fregni, George J. Frycek, Stephen W. King, Jean-Paul Masy, Sadeka Onam
  • Publication number: 20190330405
    Abstract: The present invention discloses a polymeric polyol composition useful for making polyurethane polymers, especially polyurethane foams. Said polyurethane polymer foams demonstrate a good balance of mechanical properties, physical properties, and low emissions. The polymeric polyol composition is the reaction product(s) of (i) a polyamine initiator composition comprising the polymerization product(s) of aminoethylpiperazine with (ii) at least one epoxide compound, at least one glycidyl ether compound, or mixtures thereof.
    Type: Application
    Filed: June 7, 2017
    Publication date: October 31, 2019
    Applicant: Dow Global Technologies LLC
    Inventors: Michael T. Malanga, Sabrina Fregni, George J. Frycek, Stephen W. King, Jean-Paul Masy, Sadeka Onam
  • Patent number: 9783486
    Abstract: A process for preparing high molecular weight, branched, acyclic polyalkyleneamines comprising transaminating a reaction mixture that includes at least a first polyalkyleneamine component that contains at least two non-tertiary amine groups separated from one another by a ternary or higher carbon atom and a second polyalkyleneamine component having the formula wherein x, y, and z are the same or different and are integers of from 1 to 10; a, b, c, d, e, and f are the same or different and are H or hydrocarbyl of from 1 to 10 carbon atoms; A, B, C, D, E, are the same or different and are H or hydrocarbyl of from 1 to 10 carbon atoms; provided that at least two of the amine groups are primary or secondary.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: October 10, 2017
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Stephen W. King, Sadeka Onam
  • Publication number: 20160376221
    Abstract: A process for preparing high molecular weight, branched, acyclic polyalkyleneamines comprising transaminating a reaction mixture that includes at least a first polyalkyleneamine component that contains at least two non-tertiary amine groups separated from one another by a ternary or higher carbon atom and a second polyalkyleneamine component having the formula wherein x, y, and z are the same or different and are integers of from 1 to 10; a, b, c, d, e, and f are the same or different and are H or hydrocarbyl of from 1 to 10 carbon atoms; A, B, C, D, E, are the same or different and are H or hydrocarbyl of from 1 to 10 carbon atoms; provided that at least two of the amine groups are primary or secondary.
    Type: Application
    Filed: November 24, 2014
    Publication date: December 29, 2016
    Inventors: Stephen W. KING, Sadeka ONAM
  • Patent number: 9353044
    Abstract: The invention provides a method for the reductive amination of diethanolamine to form a product composition that includes piperazine (PIP) and aminoethylethanolamine (AEEA). A catalyst with a transitional alumina/second metal oxide support and a mixture of catalytic metals is used for the reaction which results in low levels of non-PIP and non-AEEA side products.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: May 31, 2016
    Assignee: Dow Global Technologies, LLC
    Inventors: Stephen W. King, Sadeka Onam, Thomas Z. Srnak
  • Publication number: 20140371452
    Abstract: The invention provides a method for the reductive amination of diethanolamine to form a product composition that includes piperazine (PIP) and aminoethylethanolamine (AEEA). A catalyst with a transitional alumina/second metal oxide support and a mixture of catalytic metals is used for the reaction which results in low levels of non-PIP and non-AEEA side products.
    Type: Application
    Filed: November 14, 2012
    Publication date: December 18, 2014
    Inventors: Stephen W. King, Sadeka Onam, Thomas Z. Srnak