Patents by Inventor Aroop Kumar Roy

Aroop Kumar Roy 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: 20240009659
    Abstract: Internal dienes (including supported versions) and their Periodic Groups IX, X and Pt Group Metal Complexes as catalysts for hydrosilylation/coupling reactions. A process for the hydrosilylation of an unsaturated compound comprising reacting (a) a silyl or siloxy hydride with (b) an unsaturated compound in the presence of (c) one or more platinum complex containing said internal dienic ligand or (d) a platinum compound and one or more said internal dienic ligand additive. For Ru, Os, Co, Rh, Ir, Ni, or Pd, catalyzed processes such as C—C/C—N or C—O coupling comprising reacting (a) an aromatic halide/vinyl halide/an aromatic triflate with (b) a primary/secondary amine/amide, an alcohol/aryl boronic acid/aryl boronate/vinyl halide or an activated olefin in the presence of (c) a Group IX or X or Pt Group metal complex containing said dienic ligand(s) or (d) a suitable compound of these metals and of one or more said internal dienic ligand additive.
    Type: Application
    Filed: September 18, 2023
    Publication date: January 11, 2024
    Inventor: Aroop Kumar Roy
  • Patent number: 10457795
    Abstract: Provided is a composition and process for producing a crosslinked product. The composition comprises a mixture constituting (a) an alkenyl silicone, (b) a hydrogen siloxane, (c) a cure inhibitor and (d) a hydrosilylation catalyst, optionally in the presence of a solvent, and (e) sulfur compounds in order to produce the crosslinked product, and the process comprises reacting such a composition to form a crosslinked product.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: October 29, 2019
    Assignee: MOMENTIVE PERFORMANCE MATERIALS, INC.
    Inventors: Julie L. Boyer, Aroop Kumar Roy
  • Publication number: 20180194931
    Abstract: Provided is a composition and process for producing a crosslinked product. The composition comprises a mixture constituting (a) an alkenyl silicone, (b) a hydrogen siloxane, (c) a cure inhibitor and (d) a hydrosilylation catalyst, optionally in the presence of a solvent, and (e) sulfur compounds in order to produce the crosslinked product, and the process comprises reacting such a composition to form a crosslinked product.
    Type: Application
    Filed: January 13, 2016
    Publication date: July 12, 2018
    Inventors: Julie L. Boyer, Aroop Kumar Roy
  • Patent number: 9993812
    Abstract: A heterogeneous catalyst comprising a metal-containing polymer matrix covalently bonded to a support material and a method of making and using such catalysts. The metal-containing polymer matrix comprises metal nano-particles encapsulated in a polymer matrix, e.g., a siloxane. In one aspect, the metal-containing polymer matrix can be bonded to the support material via a hydrophobic group attached to the support material. The catalyst can be recovered after being used in a metal catalyzed reaction and exhibit excellent catalytic activity upon reuse in subsequent reactions.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: June 12, 2018
    Assignee: MOMENTIVE PEREFORMANCE MATERIALS INC.
    Inventors: Srinivas Komati, Vivek Khare, Kenrick Lewis, Alok Sarkar, Abirami Srikanth, Aroop Kumar Roy
  • Patent number: 9890182
    Abstract: The present invention is directed to a selective and efficient process for the hydrosilylation of compounds containing terminally unsaturated 1,3-dienes using iron-based hydrosilylation catalysts. The resulting 1,2-addition products are useful as precursors for various silicone materials or silane- or silyl/silicone-functionalized polyolefins.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: February 13, 2018
    Assignees: MOMENTIVE PERFORMANCE MATERIALS INC., PRINCETON UNIVERSITY
    Inventors: Crisita Carmen Hojilla Atienza, Aroop Kumar Roy, Paul J. Chirik, Keith J. Weller, Johannes G. P. Delis, Tianning Diao
  • Patent number: 9657160
    Abstract: Organopolysiloxane gels produced by crosslinking an unsaturated organopolysiloxane resin with a crosslinking agent in the presence of a diluent have excellent sensory properties such as properties desirable in a variety of cosmetics products.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: May 23, 2017
    Assignee: Wacker Chemie AG
    Inventors: Sebastian Knoer, Aroop Kumar Roy
  • Patent number: 9447125
    Abstract: Disclosed herein are cobalt complexes containing terdentate pyridine di-imine ligands and their use as efficient, reusable, and selective dehydrogenative silylation, crosslinking, and tandem dehydrogenative silylation-hydrogenation catalysts.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: September 20, 2016
    Assignee: Momentive Performance Materials Inc.
    Inventors: Aroop Kumar Roy, Crisita Carmen Hojilla Atienza, Paul J. Chirik, Kenrick M. Lewis, Keith J. Weller, Susan Nye, Johannes G. P. Delis, Julie L. Boyer, Tianning Diao, Eric Pohl
  • Patent number: 9440999
    Abstract: The invention relates generally to transition metal salts, more specifically to iron, nickel, cobalt, manganese and ruthenium salts, activated with silylhydrides, and their use as efficient hydrosilylation catalysts.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: September 13, 2016
    Assignee: MOMENTIVE PERFORMANCE MATERIALS INC.
    Inventors: Julie L. Boyer, Aroop Kumar Roy
  • Patent number: 9434749
    Abstract: A process for the hydrosilylation of an unsaturated compound comprising reacting (a) a silyl hydride with (b) an unsaturated compound in the presence of (c) a platinum compound and (d) a cyclodiene, with the provisos that (i) when the unsaturated compound is a terminal alkyne, the silyl hydride is other than a halosilane, and (ii) when the platinum compound is a Pt(II)-based compound, the ratio of total moles of cyclodiene to moles of platinum is less than 3:1.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: September 6, 2016
    Assignee: Momentive Performance Materials Inc.
    Inventors: Aroop Kumar Roy, Julie L. Boyer, Juergen Koller, David Jenkins, Andrea Trotto, Kenrick M. Lewis
  • Patent number: 9387468
    Abstract: Disclosed herein are cobalt complexes containing pyridine di-imine ligands and chelating alkenyl-modified silyl ligands, and their use as hydrosilylation and/or dehydrogenative silylation and crosslinking catalysts. The cobalt complexes also exhibit adequate air stability for handling and manipulation.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: July 12, 2016
    Assignees: Momentive Performance Materials Inc., Princeton University
    Inventors: Tianning Diao, Paul J. Chirik, Aroop Kumar Roy, Kenrick Lewis, Susan Nye, Keith J. Weller, Johannes G. P. Delis, Renyuan Yu
  • Patent number: 9381506
    Abstract: Disclosed herein are cobalt terpyridine complexes containing a single ligand coordinated to the cobalt, and their use as hydrosilylation and/or dehydrogenative silylation and crosslinking catalysts. The cobalt complexes also exhibit adequate air stability for handling and manipulation.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: July 5, 2016
    Assignees: Momentive Performance Materials Inc., Princeton University
    Inventors: Tianning Diao, Paul J. Chirik, Aroop Kumar Roy, Kenrick Lewis, Keith J. Weller, Johannes G. P. Delis, Renyuan Yu
  • Patent number: 9381505
    Abstract: Disclosed herein are cobalt complexes containing terpyridine ligands and chelating alkene-modified silyl ligands, and their use as hydrosilylation and/or dehydrogenative silylation and crosslinking catalysts. The cobalt complexes also exhibit adequate air stability for handling and manipulation.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: July 5, 2016
    Assignees: Momentive Performance Materials Inc., Princeton University
    Inventors: Tianning Diao, Paul J. Chirik, Aroop Kumar Roy, Kenrick Lewis, Susan Nye, Johannes G. P. Delis, Keith J. Weller
  • Patent number: 9371340
    Abstract: Disclosed herein are cobalt complexes containing terdentate pyridine di-imine ligands and their use as efficient and selective dehydrogenative silylation, hydrosilylation, and crosslinking catalysts.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: June 21, 2016
    Assignees: Momentive Performance Materials Inc., Princeton University
    Inventors: Tianning Diao, Paul J. Chirik, Aroop Kumar Roy, Kenrick Lewis, Susan Nye, Keith J. Weller, Johannes G. P. Delis, Renyuan Yu
  • Patent number: 9371339
    Abstract: The present invention relates to processes for the synthesis of saturated and unsaturated silahydrocarbons using iron-containing or cobalt-containing catalysts. The processes of the invention can produce tetraalkylsilanes, phenyltrialkylsilanes, substituted phenyltrialkylsilanes and their mixtures, which are useful as lubricants and hydraulic fluids, as well as alkyl alkenylsilanes, phenyl alkenylsilanes and substituted phenyl alkenylsilanes and their mixtures, which are useful in the synthesis of saturated silahydrocarbons and other organofunctional silanes.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: June 21, 2016
    Assignees: Momentive Performance Materials Inc., Princeton University
    Inventors: Kenrick Martin Lewis, Crisita Carmen Hojilla Atienza, Julie L. Boyer, Paul J. Chirik, Johannes G. P. Delis, Aroop Kumar Roy
  • Publication number: 20150361112
    Abstract: A process for the hydrosilylation of an unsaturated compound comprising reacting (a) a silyl hydride with (b) an unsaturated compound in the presence of (c) a platinum compound and (d) a cyclodiene, with the provisos that (i) when the unsaturated compound is a terminal alkyne, the silyl hydride is other than a halosilane, and (ii) when the platinum compound is a Pt(II)-based compound, the ratio of total moles of cyclodiene to moles of platinum is less than 3:1.
    Type: Application
    Filed: June 12, 2015
    Publication date: December 17, 2015
    Inventors: Aroop Kumar Roy, Julie L. Boyer, Juergen Koller, David Jenkins, Andrea Trotto, Kenrick M. Lewis
  • Publication number: 20150141648
    Abstract: Disclosed herein are cobalt terpyridine complexes containing a single ligand coordinated to the cobalt, and their use as hydrosilylation and/or dehydrogenative silylation and crosslinking catalysts. The cobalt complexes also exhibit adequate air stability for handling and manipulation.
    Type: Application
    Filed: November 19, 2014
    Publication date: May 21, 2015
    Inventors: Tianning Diao, Paul J. Chirik, Aroop Kumar Roy, Kenrick Lewis, Keith J. Weller, Johannes G. P. Delis, Renyuan Yu
  • Publication number: 20150141647
    Abstract: Disclosed herein are cobalt complexes containing terpyridine ligands and chelating alkene-modified silyl ligands, and their use as hydrosilylation and/or dehydrogenative silylation and crosslinking catalysts. The cobalt complexes also exhibit adequate air stability for handling and manipulation.
    Type: Application
    Filed: November 19, 2014
    Publication date: May 21, 2015
    Inventors: Tianning Diao, Paul J. Chirik, Aroop Kumar Roy, Kenrick Lewis, Susan Nye, Johannes G.P. Delis, Keith J. Weller
  • Publication number: 20150137033
    Abstract: Disclosed herein are cobalt complexes containing pyridine di-imine ligands and chelating alkenyl-modified silyl ligands, and their use as hydrosilylation and/or dehydrogenative silylation and crosslinking catalysts. The cobalt complexes also exhibit adequate air stability for handling and manipulation.
    Type: Application
    Filed: November 19, 2014
    Publication date: May 21, 2015
    Inventors: Tianning Diao, Paul J. Chirik, Aroop Kumar Roy, Kenrick Lewis, Susan Nye, Keith J. Weller, Johannes G.P. Delis, Renyuan Yu
  • Publication number: 20150080536
    Abstract: Disclosed herein are cobalt complexes containing terdentate pyridine di-imine ligands and their use as efficient and selective dehydrogenative silylation, hydrosilylation, and crosslinking catalysts.
    Type: Application
    Filed: November 19, 2014
    Publication date: March 19, 2015
    Inventors: Tianning Diao, Paul J. Chirik, Aroop Kumar Roy, Kenrick Lewis, Susan Nye, Keith J. Weller, Johannes G. P. Delis, Renyuan Yu
  • Publication number: 20150073059
    Abstract: Organopolysiloxane gels produced by crosslinking an unsaturated organopolysiloxane resin with a crosslinking agent in the presence of a diluent have excellent sensory properties such as properties desirable in a variety of cosmetics products.
    Type: Application
    Filed: April 11, 2013
    Publication date: March 12, 2015
    Inventors: Sebastian Knoer, Aroop Kumar Roy