Patents by Inventor Anil Kumar Tomar

Anil Kumar Tomar 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: 8853372
    Abstract: A novel saccharide siloxane copolymer has improved stability in the presence of water as compared to certain previously known saccharide siloxanes. The saccharide siloxane copolymer is useful in personal care compositions.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: October 7, 2014
    Assignee: Dow Corning Corporation
    Inventors: James Anderson Beck, Lylenette Canfield, Michael Salvatore Ferritto, Eric Jude Joffre, Mark Keinath, Feifei Lin, Anil Kumar Tomar
  • Patent number: 8642690
    Abstract: A bis[tri(hydroxypolyalkyleneoxy)silylalkyl] polysulfide, i.e., a polysulfide that contains bonded hydroxypolyalkyleneoxy groups instead of alkoxy groups in the bis(trialkoxysilylalkyl) polysulfide; a method of manufacturing of the aforementioned polysulfide by heating a bis(trialkoxysilylalkyl) polysulfide and a polyalkyleneglycol; a tire rubber additive to a tire rubber composition that comprises a bis[tri(hydroxypolyalkyleneoxy)silylalkyl] polysulfide alone or a mixture of bis[tri(hydroxypolyalkyleneoxy)silylalkyl] polysulfide and a polyalkyleneglycol; and a tire rubber composition that contains the aforementioned additive.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: February 4, 2014
    Assignees: Dow Corning Corporation, Dow Corning Toray Company, Ltd.
    Inventors: Takeaki Saiki, Makoto Iwai, Haruhiko Furukawa, Anil Kumar Tomar
  • Publication number: 20130115184
    Abstract: A novel saccharide siloxane copolymer has improved stability in the presence of water as compared to certain previously known saccharide siloxanes. The saccharide siloxane copolymer is useful in personal care compositions.
    Type: Application
    Filed: August 2, 2011
    Publication date: May 9, 2013
    Applicant: Dow Corning Corporation
    Inventors: James Anderson Beck, Lylenette Canfield, Michael Salvatore Ferritto, Eric Jude Joffre, Mark Keinath, Feifei Lin, Anil Kumar Tomar
  • Patent number: 8093323
    Abstract: A method for manufacturing a bis(silatranylalkyl) polysulfide by heating a bis(trialkoxysilylalkyl) polysulfide and triethanolamine in the presence of a catalytic quantity of an alkali-metal alcoholate, thus substituting all Si-bonded alkoxy groups of the bis(trialkoxysilylalkyl) polysulfide with a (OCH2CH2)3N group; a method for the preparation of a mixture of a bis(silatranylalkyl) polysulfide and a (silatranyalkyl)(trialkoxysilyl) disulfide or a mixture of a bis(silatranylalkyl) polysulfide, a (silatranylalkyl)(trialkoxysilyl) disulfide, and a bis(trialkoxysilylalkyl) polysulfide by heating a bis(trialkoxysilylalkyl) polysulfide and triethanolamine in the presence of a catalytic quantity of an alkali-metal alcoholate, thus substituting a part of Si-bonded alkoxy groups of the bis(trialkoxysilylalkyl) polysulfide with a (OCH2CH2)3N group; a mixture of a bis(silatranylalkyl) polysulfide and a (silatranylalkyl)(trialkoxysilyl) disulfide; a mixture of a bis(silatranylalkyl) polysulfide, a (silatranylalkyl)(tri
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: January 10, 2012
    Assignee: Dow Corning Toray Company, Ltd.
    Inventors: Takeaki Saiki, Makoto Iwai, Anil Kumar Tomar
  • Publication number: 20110040000
    Abstract: A bis[tri(hydroxypolyalkyleneoxy)silylalkyl] polysulfide, i.e., a polysulfide that contains bonded hydroxypolyalkyleneoxy groups instead of alkoxy groups in the bis(trialkoxysilylalkyl) polysulfide; a method of manufacturing of the aforementioned polysulfide by heating a bis(trialkoxysilylalkyl) polysulfide and a polyalkyleneglycol; a tire rubber additive to a tire rubber composition that comprises a bis[tri(hydroxypolyalkyleneoxy)silylalkyl] polysulfide alone or a mixture of bis[tri(hydroxypolyalkyleneoxy)silylalkyl] polysulfide and a polyalkyleneglycol; and a tire rubber composition that contains the aforementioned additive.
    Type: Application
    Filed: December 28, 2007
    Publication date: February 17, 2011
    Inventors: Takeaki Saiki, Makoto Iwai, Haruhiko Furukawa, Anil Kumar Tomar
  • Publication number: 20100120950
    Abstract: A method for manufacturing a bis(silatranylalkyl) polysulfide by heating a bis(trialkoxysilylalkyl) polysulfide and triethanolamine in the presence of a catalytic quantity of an alkali-metal alcoholate, thus substituting all Si-bonded alkoxy groups of the bis(trialkoxysilylalkyl) polysulfide with a (OCH2CH2)3N group; a method for the preparation of a mixture of a bis(silatranylalkyl) polysulfide and a (silatranyalkyl) (trialkoxysilyl) disulfide or a mixture of a bis(silatranylalkyl) polysulfide, a (silatranylalkyl) (trialkoxysilyl) disulfide, and a bis(trialkoxysilylalkyl) polysulfide by heating a bis(trialkoxysilylalkyl) polysulfide and triethanolamine in the presence of a catalytic quantity of an alkali-metal alcoholate, thus substituting a part of Si-bonded alkoxy groups of the bis(trialkoxysilylalkyl) polysulfide with a (OCH2CH2)3N group; a mixture of a bis(silatranylalkyl) polysulfide and a (silatranylalkyl)(trialkoxysilyl) disulfide; a mixture of a bis(silatranylalkyl) polysulfide, a (silatranylalkyl)(t
    Type: Application
    Filed: January 11, 2008
    Publication date: May 13, 2010
    Inventors: Takeaki Saiki, Makoto Iwai, Anil Kumar Tomar
  • Publication number: 20040227127
    Abstract: Silica surfaces are contacted with compositions containing organosilicon compounds to prepare modified silica fillers. The compositions contain only organosilicon compounds which are monomeric dichlorosilanes and trialkoxysilanes. The treating compositions may be (i) mixtures or blends of dialkyldichlorosilanes, and trialkoxysilanes free of hydrocarbon or organofunctional groups reactive with silica surfaces, or (ii) mixtures or blends of substituted dialkyldichlorosilanes in which the substituted dialkyldichlorosilanes are free of hydrocarbon or organofunctional groups reactive with silica surfaces, and trialkoxysilanes free of hydrocarbon or organofunctional groups reactive with silica surfaces. These mixtures and blends contain dialkyldichlorosilanes and trialkoxysilanes in a weight ratio of 1:0.1 to 1:2, respectively.
    Type: Application
    Filed: June 22, 2004
    Publication date: November 18, 2004
    Inventors: Lisa Marie Boswell, Csilla Kollar, Anthony Revis, Anil Kumar Tomar
  • Patent number: 6811823
    Abstract: Silica surfaces are contacted with compositions containing organosilicon compounds to prepare modified silica fillers. The compositions contain only organosilicon compounds which are monomeric dichlorosilanes and trialkoxysilanes. The treating compositions may be (i) mixtures or blends of dialkyldichlorosilanes, and trialkoxysilanes free of hydrocarbon or organofunctional groups reactive with silica surfaces, or (ii) mixtures or blends of substituted dialkyldichlorosilanes in which the substituted dialkyldichlorosilanes are free of hydrocarbon or organofunctional groups reactive with silica surfaces, and trialkoxysilanes free of hydrocarbon or organofunctional groups reactive with silica surfaces. These mixtures and blends contain dialkyldichlorosilanes and trialkoxysilanes in a weight ratio of 1:0.1 to 1:2, respectively.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: November 2, 2004
    Assignee: Dow Corning Corporation
    Inventors: Lisa Marie Boswell, Csilla Kollar, Anthony Revis, Anil Kumar Tomar
  • Publication number: 20040052939
    Abstract: Silica surfaces are contacted with compositions containing organosilicon compounds to prepare modified silica fillers. The compositions contain only organosilicon compounds which are monomeric dichlorosilanes and trialkoxysilanes. The treating compositions may be (i) mixtures or blends of dialkyldichlorosilanes, and trialkoxysilanes free of hydrocarbon or organofunctional groups reactive with silica surfaces, or (ii) mixtures or blends of substituted dialkyldichlorosilanes in which the substituted dialkyldichlorosilanes are free of hydrocarbon or organofunctional groups reactive with silica surfaces, and trialkoxysilanes free of hydrocarbon or organofunctional groups reactive with silica surfaces. These mixtures and blends contain dialkyldichlorosilanes and trialkoxysilanes in a weight ratio of 1:0.1 to 1:2, respectively.
    Type: Application
    Filed: January 31, 2003
    Publication date: March 18, 2004
    Inventors: Lisa Marie Boswell, Csilla Kollar, Anthony Revis, Anil Kumar Tomar
  • Patent number: 6680398
    Abstract: In a first embodiment of a process for making mercaptoalkylalkoxysilanes, a pH adjusting agent and a sulfide containing compound are mixed in an aqueous phase to provide a pH of 4-9, a phase transfer catalyst is added to the aqueous phase, a haloalkylalkoxysilane is then added to the aqueous phase to form a reaction mixture containing mercaptoalkylalkoxysilanes and water soluble byproducts, and the desired mercaptoalklyalkoxysilanes are separated from the water soluble byproducts. In an alternate embodiment, the haloalkylalkoxysilane, the phase transfer catalyst, and an anhydrous pH adjusting agent such as sulfur dioxide, carbon dioxide, hydrogen sulfide, phosphoric acid, boric acid, and hydrochloric acid, are mixed, then an aqueous solution of a sulfide containing compound is added to form a reaction mixture containing mercaptoalkylalkoxysilanes and water soluble byproducts, and desired mercaptoalklyalkoxysilanes are separated from water soluble byproducts.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: January 20, 2004
    Assignee: Dow Corning Corporation
    Inventors: Lisa Marie Boswell, William Charles Maki, Anil Kumar Tomar
  • Patent number: 6534668
    Abstract: A process for the production of sulfur containing organosilicon compounds of the formula: (RO)3−mRmSi—Alk—Sn—Alk—SiRm(OR)3−m where R is independently a monovalent hydrocarbon of 1 to 12 carbon atoms; Alk is a divalent hydrocarbon of 1 to 18 carbon atoms; m is an integer of 0 to 2, n is a number from 1 to 8; based on phase transfer catalysis techniques is disclosed. The process comprises reacting: (A) a sulfide compound having the formula M2Sn or MHS, where H is hydrogen, M is ammonium or an alkali metal, n is as defined above, with (B) a silane compound of the formula; (RO)3−mRmSi—Alk—X where X is Cl, Br or I, and m is the same as above, and optionally, (C) sulfur in the presence of a phase transfer catalyst and an aqueous phase containing a buffer. The improvement of the present invention is characterized by adding a buffer to the aqueous phase, which minimizes or prevents gelling of the sulfur containing organosilicon compounds.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: March 18, 2003
    Assignee: Dow Corning Corporation
    Inventors: Michael Wolfgang Backer, Howard Marvin Bank, John Michael Gohndrone, William Charles Maki, Charles Edmund Skinner, Anil Kumar Tomar, Hongjun Yue
  • Publication number: 20030013901
    Abstract: A process for the production of sulfur containing organosilicon compounds of the formula:
    Type: Application
    Filed: June 29, 2001
    Publication date: January 16, 2003
    Inventors: Michael Wolfgang Backer, Howard Marvin Bank, John Michael Gohndrone, William Charles Maki, Charles Edmund Skinner, Anil Kumar Tomar, Hongjun Yue
  • Patent number: 6448426
    Abstract: An improved process for the production of organosilicon compounds of the formula (RO)3−mRmSi—Alk—Sn—Alk—SiRm(OR)3−m where R is independently a monovalent hydrocarbon of 1 to 12 carbon atoms, Alk is a divalent hydrocarbon of 1 to 18 carbon atoms; m is an integer of 0 to 2, n is a number from 1 to 8 is disclosed.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: September 10, 2002
    Assignee: Dow Corning Corporation
    Inventors: Michael Wolfgang Backer, Howard Marvin Bank, John Michael Gohndrone, William Charles Maki, Charles Edmund Skinner, Anil Kumar Tomar, Hongjun Yue
  • Patent number: 6384255
    Abstract: A process for the production of organosilicon compounds of the formula (RO)3−mRmSi—Alk—Sn—Alk—SiRm(OR)3−m where R is independently a monovalent hydrocarbon of 1 to 12 carbon atoms, Alk is a divalent hydrocarbon of 1 to 18 carbon atoms; m is an integer of 0 to 2, n is a number from 1 to 8 is disclosed. The process comprises: (A) reacting sulfur, a phase transfer catalyst, a sulfide compound having the formula M2Sn or MHS, where H is hydrogen, M is ammonium or an alkali metal, n is the same as above,  and water to form an intermediate reaction product; (B) reacting said intermediate reaction product with  a silane compound of the formula; (RO)3−mRmSi—Alk—X  where X is Cl, Br or I, and m is the same as above. The invention provides an improvement process characterized by adding the phase transfer catalyst to the aqueous phase prior to mixing the aqueous phase with the silane compound for the reaction.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: May 7, 2002
    Assignee: Dow Corning Corporation
    Inventors: Michael Wolfgang Backer, Howard Marvin Bank, John Michael Gohndrone, William Charles Maki, Charles Edmund Skinner, Anil Kumar Tomar, Hongjun Yue
  • Patent number: 6384256
    Abstract: A process for the production of organosilicon compounds of the formula: (RO)3−mRmSi-Alk-Sn-Alk-SiRm(OR)3−m where R is independently a monovalent hydrocarbon of 1 to 12 carbon atoms; Alk is a divalent hydrocarbon of 1 to 18 carbon atoms; m is an integer of 0 to 2, n is a number from 1 to 10; is disclosed. The process comprises: (A) reacting an alkali metal hydroxide compound, a sulfide compound having the formula M2Sn or MHS, where H is hydrogen, M is ammonium or an alkali metal, n is as defined above,  and sulfur in water to form a polysulfide mixture, (B) reacting said polysulfide mixture with a silane compound of the formula; (RO)3−mRmSi-Alk-X where X is Cl, Br or I, and m is the same as above, in the presence of a phase transfer catalyst. The process provides sulfur containing organosilicon compounds based on phase transfer catalysis techniques that result in a final product composition having greater stability, purity, and appearance.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: May 7, 2002
    Assignee: Dow Corning Corporation
    Inventors: Michael Wolfgang Backer, Howard Marvin Bank, John Michael Gohndrone, William Charles Maki, Charles Edmund Skinner, Anil Kumar Tomar, Hongjun Yue