Patents by Inventor Gamini Ananda Vedage

Gamini Ananda Vedage 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: 20120077943
    Abstract: A heat curable epoxy composition comprising the contact product of an epoxy resin, an epoxy curing agent and an accelerator for the epoxy curing agent, the curing agent or the accelerator comprising the reaction product of (a) a phenolic resin (a) of general formula: Where R1, R2, R3, R4 are each independently of one another a hydrogen or unbranched or branched alky group having 1 to 17 carbon atoms, and n is an integer form 0 to 50; and (b) a modified amine compound which is the reaction product of an epoxy resin and a methylated polyalkylenepolyamine having one primary or secondary amine and at least two tertiary amines of the general formula: Where R1, R2, R3, R4 and R5 represent hydrogen, methyl or ethyl; n and m independently are integers from 1 to 10 and; X is an integer from 1 to 10.
    Type: Application
    Filed: March 30, 2011
    Publication date: March 29, 2012
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Atteye Houssein Abdourazak, Gamini Ananda Vedage
  • Patent number: 8143331
    Abstract: The present invention provides curing agent compositions comprising the reaction product of alkylated polyalkyleneamine compounds and polyalkylene polyether polyol modified polyepoxide resins. Amine-epoxy compositions and articles produced from these amine-epoxy compositions are also disclosed.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: March 27, 2012
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Williams René Edouard Raymond, Gamini Ananda Vedage, Stephen Francis Monaghan, Michael Ian Cook, Susana R. Grote
  • Patent number: 8076395
    Abstract: A heat curable epoxy composition comprising the contact product of an epoxy resin, an epoxy curing agent and an accelerator for the epoxy curing agent, the curing agent or the accelerator comprising a urea compound which is the reaction product of an isocyanate and an alkylated polyalkylenepolyamine having one primary or secondary amine and at least two tertiary amines of the general formula: where R1, R2, R3, R4 and R5 independently represent hydrogen, methyl or ethyl, n and m independently are integers from 1 to 6 and; X is an integer from 1 to 10.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: December 13, 2011
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Atteye Houssein Abdourazak, Gamini Ananda Vedage
  • Publication number: 20110301318
    Abstract: Mixed polycycloaliphatic amines (MPCA) and alkylates thereof (MPCA alkylates), methods for making mixed polycycloaliphatic MPCA amines and MPCA alkylates thereof, as well as polymeric compositions, such as spray-applied polyurea coating compositions, comprising said mixed amines MPCA and MPCA alkylates thereof are described herein. In one embodiment, the polymeric composition comprises an isocyanate component, and a resin component comprising an organic compound having the following Formula I: where R1, R2 and R3 are each independently selected from a hydrogen atom, an alkyl group comprising from 1 to 20 carbon atoms, an aryl group comprising from 3 to 12 carbon atoms, an aralkyl group comprising from 3 to 12 carbon atoms and combinations thereof, provided that there is at least one alkyl group within Formula I, and X is a methylene bridged polycycloaliphatic amine (MPCA).
    Type: Application
    Filed: August 24, 2011
    Publication date: December 8, 2011
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Mark David Conner, Gamini Ananda Vedage, Peter Andrew Lucas, Courtney Thompson Thurau, RIchard V.C. Carr
  • Patent number: 8026318
    Abstract: Mixed polycycloaliphatic amines (MPCA) and alkylates thereof (MPCA alkylates), methods for making mixed polycycloaliphatic MPCA amines and MPCA alkylates thereof, as well as polymeric compositions, such as spray-applied polyurea coating compositions, comprising said mixed amines MPCA and MPCA alkylates thereof are described herein. In one embodiment, the polymeric composition comprises an isocyanate component, and a resin component comprising an organic compound having the following Formula I: where R1, R2 and R3 are each independently selected from a hydrogen atom, an alkyl group comprising from 1 to 20 carbon atoms, an aryl group comprising from 3 to 12 carbon atoms, an aralkyl group comprising from 3 to 12 carbon atoms and combinations thereof, provided that there is at least one alkyl group within Formula I, and X is a methylene bridged polycycloaliphatic amine (MPCA).
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: September 27, 2011
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Mark David Conner, Gamini Ananda Vedage, Peter Andrew Lucas, Courtney Thompson Thurau, Richard V. C. Carr
  • Patent number: 7993751
    Abstract: The present invention provides epoxy curing agent compositions comprising alkylated aminopropylated methylene-di-(cyclohexylamine) compounds. Amine-epoxy compositions and articles produced from these amine-epoxy compositions are also disclosed.
    Type: Grant
    Filed: August 6, 2008
    Date of Patent: August 9, 2011
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Gamini Ananda Vedage, Williams Rene Raymond, Maw Lin Foo
  • Patent number: 7910667
    Abstract: A heat curable epoxy composition comprising the contact product of an epoxy resin, an epoxy curing agent and an accelerator for the epoxy curing agent, the curing agent or the accelerator comprising the reaction product of (a) a phenolic resin and (b) a urea compound which is the reaction product of an isocyanate and an alkylated polyalkylenepolyamine having one primary or secondary amine and at least two tertiary amines of the general formula: where R1, R2, R3, R4 and R5 independently represent hydrogen, methyl or ethyl; n and m are independently integers from 1 to 6 and; X is an integer from 1 to 10.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: March 22, 2011
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Gamini Ananda Vedage, Atteye Houssein Abdourazak
  • Publication number: 20110065837
    Abstract: A heat curable epoxy composition comprising the contact product of an epoxy resin, an epoxy curing agent and an accelerator for the epoxy curing agent, the curing agent or the accelerator comprising the reaction product of (a) a phenolic resin and (b) a urea compound which is the reaction product of an isocyanate and an alkylated polyalkylenepolyamine having one primary or secondary amine and at least two tertiary amines of the general formula: where R1, R2, R3, R4 and R5 independently represent hydrogen, methyl or ethyl; n and m are independently integers from 1 to 6 and; X is an integer from 1 to 10.
    Type: Application
    Filed: September 11, 2009
    Publication date: March 17, 2011
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Gamini Ananda Vedage, Atteye Houssein Abdourazak
  • Publication number: 20110065958
    Abstract: A heat curable epoxy composition comprising the contact product of an epoxy resin, an epoxy curing agent and an accelerator for the epoxy curing agent, the curing agent or the accelerator comprising a urea compound which is the reaction product of an isocyanate and an alkylated polyalkylenepolyamine having one primary or secondary amine and at least two tertiary amines of the general formula: where R1, R2, R3, R4 and R5 independently represent hydrogen, methyl or ethyl, n and m independently are integers from 1 to 6 and; X is an integer from 1 to 10.
    Type: Application
    Filed: September 11, 2009
    Publication date: March 17, 2011
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Atteye Houssein Abdourazak, Gamini Ananda Vedage
  • Publication number: 20100280211
    Abstract: Epoxy curing agents comprising imidazole-isocyanate adducts, including 1-(aminoalkyl)imidazole-isocyanate adducts and especially 1-(3-aminopropyl)imidazole-isocyanate adducts, and their use as curing agents in heat curable one-component epoxy resin compositions. Epoxy curing agents comprising imidazole-isocyanate adducts comprising the reaction product of at least one imidazole, at least one polyisocyanate and at least one diamine.
    Type: Application
    Filed: October 30, 2009
    Publication date: November 4, 2010
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Maw Lin Foo, Gamini Ananda Vedage, Atteye Houssein Abdourazak
  • Publication number: 20100280192
    Abstract: Epoxy curing agents comprising imidazole-isocyanate adducts, including 1-(aminoalkyl) imidazole-isocyanate adducts and especially 1-(3-aminopropyl) imidazole-isocyanate adducts, and their use as curing agents in heat curable one-component epoxy resin compositions.
    Type: Application
    Filed: April 29, 2009
    Publication date: November 4, 2010
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Maw Lin Foo, Gamini Ananda Vedage, Atteye Houssein Abdourazak
  • Publication number: 20100119838
    Abstract: The present invention provides N,N?-dimethyl secondary diamine polymers including methylamine-terminated poly-(N-methylazetidine) and methylamine-terminated poly-(N-methylazacycloheptane). Amine compositions and amine-epoxy compositions comprising N,N?-dimethyl secondary diamine polymers are also disclosed.
    Type: Application
    Filed: January 19, 2010
    Publication date: May 13, 2010
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Frederick Herbert Walker, Michael Ian Cook, Gamini Ananda Vedage, Robert Marjo Theodoor Rasing, Vipul P. Dholakia
  • Publication number: 20100048954
    Abstract: The present invention discloses both amine compositions and amine-epoxy compositions containing N,N?-dimethyl-meta-xylylenediamine. A novel process for producing amines such as N,N?-dimethyl-meta-xylylenediamine, and structurally similar amines, is also disclosed.
    Type: Application
    Filed: August 25, 2008
    Publication date: February 25, 2010
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Gamini Ananda Vedage, John Anthony Marsella
  • Publication number: 20100048833
    Abstract: Mixed polycycloaliphatic amines (MPCA) and alkylates thereof (MPCA alkylates), methods for making mixed polycycloaliphatic MPCA amines and MPCA alkylates thereof, as well as polymeric compositions, such as spray-applied polyurea coating compositions, comprising said mixed amines MPCA and MPCA alkylates thereof are described herein. In one embodiment, the polymeric composition comprises an isocyanate component, and a resin component comprising an organic compound having the following Formula I: where R1, R2 and R3 are each independently selected from a hydrogen atom, an alkyl group comprising from 1 to 20 carbon atoms, an aryl group comprising from 3 to 12 carbon atoms, an aralkyl group comprising from 3 to 12 carbon atoms and combinations thereof, provided that there is at least one alkyl group within Formula I, and X is a methylene bridged polycycloaliphatic amine (MPCA).
    Type: Application
    Filed: August 22, 2008
    Publication date: February 25, 2010
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Mark David Conner, Gamini Ananda Vedage, Peter Andrew Lucas, Courtney Thompson Thurau, RIchard V. C. Carr
  • Publication number: 20100048827
    Abstract: The present invention discloses both amine compositions and amine-epoxy compositions containing N,N?-dimethyl-meta-xylylenediamine. A novel process for producing amines such as N,N?-dimethyl-meta-xylylenediamine, and structurally similar amines, is also disclosed.
    Type: Application
    Filed: August 25, 2008
    Publication date: February 25, 2010
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Frederick Herbert Walker, Robert Marjo Theodoor Rasing, Gamini Ananda Vedage, Michael Ian Cook, Peter Andrew Lucas
  • Publication number: 20100048832
    Abstract: Alkylated 4-aminobenzyl-4-aminocyclohexane curing agents that can be used, for example, in polyurea, polyurethane and urea/urethane hybrid elastomeric, epoxy resin, epoxy adhesive, epoxy composites and/or coating compositions and polymeric compositions comprising these curing agents are provided herein. In one embodiment, the curing agent comprises a compound having the following Formula I: wherein R1 and R2 are each independently a hydrogen, an alkyl group comprising from 1 to 20 carbon atoms, or combinations thereof. In another embodiment, a method of making the polymeric composition comprising the compound having the above Formula I is provided herein.
    Type: Application
    Filed: August 22, 2008
    Publication date: February 25, 2010
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Gamini Ananda Vedage, Courtney Thompson Thurau, Mark David Conner, Ellen Margaret O'Connell
  • Patent number: 7666954
    Abstract: The present invention provides N,N?-dimethyl secondary diamine polymers including methylamine-terminated poly-(N-methylazetidine) and methylamine-terminated poly-(N-methylazacycloheptane). Amine compositions and amine-epoxy compositions comprising N,N?-dimethyl secondary diamine polymers are also disclosed.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: February 23, 2010
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Frederick Herbert Walker, Michael Ian Cook, Gamini Ananda Vedage, Robert Marjo Theodoor Rasing, Vipul P. Dholakia
  • Patent number: 7655736
    Abstract: The present invention provides polyamide curing agent compositions comprising the reaction products of (1) multifunctional amines of structure 1 where R1 is CH2CH2CH2NH2; R2, R3 and R4 independently are H or CH2CH2CH2NH2, and X is CH2CH2 or CH2CH2CH2 with (2) dimer fatty acids, optionally in combination with monofunctional fatty acids, the reaction product preferably comprising at least 15 wt % tetrahydropyrimidine-containing components. The curing agent compositions are useful for crosslinking epoxy resins to produce coatings, adhesives, floorings, composites and other articles.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: February 2, 2010
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Gamini Ananda Vedage, Stephen Francis Monaghan, Williams René Edouard Raymond, Michael Ian Cook, Michael Paul Popule
  • Publication number: 20090259003
    Abstract: The present invention provides Mannich base derivatives of N,N?-dimethyl secondary diamine polymers including Mannich base derivatives of methylamine-terminated poly-(N-methylazetidine) and Mannich base derivatives of methylamine-terminated poly-(N-methylazacycloheptane). Amine curing agent compositions and amine-epoxy compositions containing Mannich base derivatives of N,N?-dimethyl secondary diamine polymers are also disclosed.
    Type: Application
    Filed: April 9, 2008
    Publication date: October 15, 2009
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Frederick Herbert Walker, Michael Ian Cook, Gamini Ananda Vedage, Robert Marjo Theodoor Rasing
  • Publication number: 20090227695
    Abstract: The present invention provides polymeric polyol compositions employing polyol compounds having multiple tertiary amine groups. Methods of making these compositions are also disclosed. Polyol formulations containing these polymeric polyol compositions and methods of making polyurethane gel and foam employing such polymeric polyol compositions are also provided.
    Type: Application
    Filed: September 10, 2008
    Publication date: September 10, 2009
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Juan Jesus Burdeniuc, Gamini Ananda Vedage