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).

  • Patent number: 8729213
    Abstract: A curing agent composition including at least one benzylated polyamine compound. The benzylated polyamine compound is a reaction product of a benzaldehyde compound or benzyl halide compound and a polyamine according to the following formula: H2N—CH2-A-CH2-NH2 where A is a phenylene group or a cyclohexylene group. A method for making the curing agent composition and an amine-epoxy composition are also disclosed.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: May 20, 2014
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Williams Rene Edouard Raymond, Gamini Ananda Vedage
  • Publication number: 20140005037
    Abstract: The present invention provides trimerization catalyst compositions and methods to produce a polyisocyanurate/polyurethane foam using such trimerization catalyst compositions. The catalyst composition is the contact product of at least one ?,?-unsaturated carboxylate salt and at least one second carboxylate salt.
    Type: Application
    Filed: September 9, 2013
    Publication date: January 2, 2014
    Inventors: Juan Jesus BURDENIUC, Torsten PANITZSCH, John Elton DEWHURST, Gamini Ananda VEDAGE
  • Patent number: 8552077
    Abstract: The present invention provides trimerization catalyst compositions and methods to produce a polyisocyanurate/polyurethane foam using such trimerization catalyst compositions. The catalyst composition is the contact product of at least one ?,?-unsaturated carboxylate salt and at least one second carboxylate salt.
    Type: Grant
    Filed: May 4, 2006
    Date of Patent: October 8, 2013
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Juan Jesus Burdeniuc, Torsten Panitzsch, John Elton Dewhurst, Gamini Ananda Vedage
  • Patent number: 8552078
    Abstract: A composition for making a polyurethane foam includes a non-fugitive tertiary amine urethane catalyst and an alkylated polyamine crosslinking additives. Foams prepared from the reaction of a polyol and an organic isocyanate in the presence of these ingredients show improved resistance to deterioration of physical properties upon humid ageing.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: October 8, 2013
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Gamini Ananda Vedage, Juan Jesus Burdeniuc, Allen Robert Arnold, Jr., James Douglas Tobias
  • Patent number: 8536284
    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: January 19, 2010
    Date of Patent: September 17, 2013
    Assignee: Air Products & Chemicals, Inc.
    Inventors: Frederick Herbert Walker, Michael Ian Cook, Gamini Ananda Vedage, Robert Marjo Theodoor Rasing, Vipul P. Dholakia
  • Patent number: 8518547
    Abstract: The present invention provides curing agent compositions comprising alkylated polyalkylene polyamine 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 27, 2013
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Gamini Ananda Vedage, Williams Rene Edouard Raymond, Peter Andrew Lucas, David Alan Dubowik
  • Patent number: 8512594
    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: Grant
    Filed: August 25, 2008
    Date of Patent: August 20, 2013
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Frederick Herbert Walker, Robert Marjo Theodoor Rasing, Gamini Ananda Vedage, Michael Ian Cook, Peter Andrew Lucas
  • Patent number: 8513376
    Abstract: The present disclosure provides polyamides and amidoamine curing agents including the reaction product of (1) a modified amine component comprising at least one multifunctional amine of structure 1: wherein R1 is selected from C1-C16 linear, cyclic, and branched alkyl, alkenyl, and alkaryl groups; R2 and R4 are hydrogen, R3 is R1 or hydrogen, X, Y, and Z are independently selected from C2-C10 alkylene, hexylene and cycloalkylene groups, n=0, 1, 2, 3, 4, 5, 6, or 7; and (2) a fatty acid component. Exemplary fatty acid components include at least one of monomer fatty acids, dimer fatty acids, trimer fatty acids, polymer fatty acids, esters of monomer, dimer, trimer, and polymer fatty acids and combinations thereof. The method for making the curing agents and articles formed therefrom are also disclosed.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: August 20, 2013
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Williams Rene Edouard Raymond, David Alan Dubowik, Gamini Ananda Vedage
  • Patent number: 8501997
    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: Grant
    Filed: August 25, 2008
    Date of Patent: August 6, 2013
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Gamini Ananda Vedage, John Anthony Marsella
  • Publication number: 20130079435
    Abstract: A curing agent composition including at least one benzylated polyamine compound. The benzylated polyamine compound is a reaction product of a benzaldehyde compound or benzyl halide compound and a polyamine according to the following formula: H2N—CH2-A-CH2-NH2 where A is a phenylene group or a cyclohexylene group. A method for making the curing agent composition and an amine-epoxy composition are also disclosed.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 28, 2013
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Williams Rene Edouard Raymond, Gamini Ananda Vedage
  • Publication number: 20130040060
    Abstract: A liquid methylenedianiline product is disclosed. The product is produced by reacting aniline and ethylaniline with formaldehyde with an amine to formaldehyde ratio greater than about 2:1. The resulting reaction product is a liquid mixture of methylenedianiline, monoethyl methylenedianiline, and diethyl methylenedianiline having a viscosity of less than about 1000 cps at 40° C.
    Type: Application
    Filed: August 12, 2011
    Publication date: February 14, 2013
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Gauri Sankar Lal, Kristen Elaine Minnich, Pritesh G. Patel, Gamini Ananda Vedage, Garret C. Lau
  • Patent number: 8367870
    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: Grant
    Filed: September 10, 2008
    Date of Patent: February 5, 2013
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Juan Jesus Burdeniuc, Gamini Ananda Vedage
  • Patent number: 8357764
    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: Grant
    Filed: October 30, 2009
    Date of Patent: January 22, 2013
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Maw Lin Foo, Gamini Ananda Vedage, Atteye Houssein Abdourazak
  • Patent number: 8318309
    Abstract: The present invention provides epoxy curing agent compositions comprising benzylated aminopropylated alkylenediamine compounds. Amine-epoxy compositions and articles produced from these amine-epoxy compositions are also disclosed.
    Type: Grant
    Filed: August 6, 2008
    Date of Patent: November 27, 2012
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Gamini Ananda Vedage, Williams Rene Edouard Raymond, Michael Ian Cook, Robert Marjo Theodoor Rasing, Ellen Margaret O'Connell, Maw Lin Foo
  • Patent number: 8293863
    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: February 9, 2007
    Date of Patent: October 23, 2012
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Gamini Ananda Vedage, Stephan Francis Monaghan, Williams René Edouard Raymond, Michael Ian Cook, Michael Paul Popule
  • Publication number: 20120237774
    Abstract: The present disclosure provides polyamides and amidoamine curing agents including the reaction product of (1) a modified amine component comprising at least one multifunctional amine of structure 1: wherein R1 is selected from C1-C16 linear, cyclic, and branched alkyl, alkenyl, and alkaryl groups; R2 and R4 are hydrogen, R3 is R1 or hydrogen, X, Y, and Z are independently selected from C2-C10 alkylene, hexylene and cycloalkylene groups, n=0, 1, 2, 3, 4, 5, 6, or 7; and (2) a fatty acid component. Exemplary fatty acid components include at least one of monomer fatty acids, dimer fatty acids, trimer fatty acids, polymer fatty acids, esters of monomer, dimer, trimer, and polymer fatty acids and combinations thereof. The method for making the curing agents and articles formed therefrom are also disclosed.
    Type: Application
    Filed: March 15, 2011
    Publication date: September 20, 2012
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Williams Rene Edouard Raymond, David Alan Dubowik, Gamini Ananda Vedage
  • Patent number: 8198395
    Abstract: The present invention provides epoxy curing agent compositions comprising alkylated aminopropylated alkylenediamine compounds. Amine-epoxy compositions and articles produced from these amine-epoxy compositions are also disclosed.
    Type: Grant
    Filed: August 6, 2008
    Date of Patent: June 12, 2012
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Gamini Ananda Vedage, Williams Rene Edouard Raymond, Ellen Margaret O'Connell, Maw Lin Foo, Peter Andrew Lucas
  • Patent number: 8168296
    Abstract: The present invention provides curing agent compositions comprising benzylated polyalkylene polyamine compounds. Amine-epoxy compositions and articles produced from these amine-epoxy compositions are also disclosed.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: May 1, 2012
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Gamini Ananda Vedage, Williams Rene Edouard Raymond, Michael Ian Cook, Robert Marjo Theodoor Rasing
  • Patent number: 8147964
    Abstract: The present invention provides curing agent compositions comprising benzylated polyalkylene polyamine compounds. Amine-epoxy compositions and articles produced from these amine-epoxy compositions are also disclosed.
    Type: Grant
    Filed: August 6, 2008
    Date of Patent: April 3, 2012
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Gamini Ananda Vedage, Williams Rene Edouard Raymond, Michael Ian Cook, Robert Marjo Theodoor Rasing
  • 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