Patents by Inventor Swaminathan Ramesh

Swaminathan Ramesh 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: 7232863
    Abstract: Disclosed is a method for making nongelled functional addition polymers from linear unsaturated anhydrides. The method subjects a linear unsaturated anhydride compound, an active hydrogen compound, and an epoxide compound to reaction conditions such that each of the following three reactions occur: (i) polymerization of polymerizable C?C bonds, (ii) ring opening of an anhydride functional group of the linear unsaturated anhydride compound by the active hydrogen compound to create an acid functional group, and (iii) reaction of the acid functional group resulting from the anhydride ring opening with the epoxide compound. At the time of reaction (iii), the acid functional group resulting from the anhydride ring opening may be selected from an ethylenically unsaturated monomer, a polymer, or both. In one embodiment, the method does not include the physical removal of any acid functional monomers or polymerization products. Also disclosed are a curable coating composition and a coated substrate.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: June 19, 2007
    Assignee: BASF Corporation
    Inventors: Walter H. Ohrbom, Donald H. Campbell, Donald L. St. Aubin, Swaminathan Ramesh, Paul J. Harris, Ulrike Röckrath
  • Patent number: 7226971
    Abstract: The present invention is directed to a polyester resin for use in a coating composition. The polyester resin is the reaction product of a first compound comprising a plurality of hydroxyl groups, a lactone compound, a carboxylic acid anhydride, an epoxy compound having at least one epoxy group, and a carbamate compound. The present invention is also directed to a coating composition including the polyester resin and to a method of preparing the resin.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: June 5, 2007
    Assignee: BASF Corporation
    Inventors: Swaminathan Ramesh, Marvin L Green
  • Publication number: 20070123621
    Abstract: A curable clearcoat coating composition demonstrates increased gloss retention with the addition of from about 1% to about 10% by weight of a silylated dimer fatty alcohol diol.
    Type: Application
    Filed: September 15, 2005
    Publication date: May 31, 2007
    Applicant: BASF Corporation
    Inventors: Sunitha Grandhee, Swaminathan Ramesh
  • Patent number: 7220811
    Abstract: An acrylic composition includes the reaction product of an acrylic polymer and carbon dioxide. The acrylic polymer includes the reaction product of a functionalized monomer, a first compound reactive with the functionalized monomer to form a functionalized intermediate, and a highly branched, polyfunctional core molecule reactive with the functionalized intermediate. The first compound includes vinyl functionality reactive with the functionalized monomer. The first compound also includes epoxy functionality. The carbon dioxide is reactive with the acrylic polymer to form a carbonate-functional acrylic polymer. The acrylic composition is highly-branched and, when used in coating compositions in combination with a suitable cross-linking agent, enhances recoat adhesion and produces cured films that have optimum scratch, mar, and chip performance, and acid etch resistance.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: May 22, 2007
    Assignee: BASF Corporation
    Inventors: Swaminathan Ramesh, Marvin L. Green
  • Publication number: 20070083068
    Abstract: The present invention provides a method of recycling a plastic thereby forming a narrow spectrum of hydrocarbons having from 4 to 14 carbon atoms that can be directly used as gasoline without additional processing or refining. The method includes the step of feeding the plastic, selected from the group of polyethylene, polypropylene, polystyrene, and combinations thereof, into a heated vessel for melting. The method also includes the step of decomposing the plastic at a temperature of from 400° C. to 500° C. in the presence of a metallocene catalyst and a zeolitic catalyst thereby forming the hydrocarbons having from 4 to 14 carbon atoms. The metallocene catalyst includes dichlorobis(2-methylindenyl)zirconium (IV). The zeolitic catalyst includes ammonium Y zeolite and has a pore size of from 1 to 4 Angstroms.
    Type: Application
    Filed: October 6, 2006
    Publication date: April 12, 2007
    Inventors: Swaminathan Ramesh, Joel Sibul
  • Publication number: 20070059451
    Abstract: A coating composition including an aqueous dispersion of a copolymerization product of a mixture of monomers including carbamate-functional and (meth)acrylic monomers, some having carboxylic acid-functionality. The monomer mixture is essentially free of hydroxyl monomer. The coating can be applied on a polycarbonate substrate. The coating composition may be a clearcoat coating composition, preferably an automotive clearcoat coating composition. The invention provides a method of producing such a coating and application on a substrate, particularly as a basecoat/clearcoat composite coating, with the coating composition of the invention preferably being at least the clearcoat of the composite coating. If the substrate is a polycarbonate, the clearcoat can be applied directly on the substrate without any primer or basecoat.
    Type: Application
    Filed: September 15, 2005
    Publication date: March 15, 2007
    Applicant: BASF Corporation
    Inventors: Swaminathan Ramesh, Heinz-Peter Rink
  • Publication number: 20070059532
    Abstract: A curable coating composition comprises (a) a compound having two types of functionality, functionality A and functionality B, that react in curing the coating, (b) a second material having functionality C that reacts with functionality A in curing the coating, and (c) a crosslinker having a plurality of functional groups D that react at least with functionality B in curing the coating. Functional groups D may also react with functionality C and/or with a functional group formed as a result of the reaction of functionality C with functionality A. The curable coating composition is applied to a substrate and cured under conditions appropriate for reactions of the functionalities A, B, C, and D.
    Type: Application
    Filed: September 15, 2005
    Publication date: March 15, 2007
    Applicant: BASF Corporation
    Inventors: Swaminathan Ramesh, Sunitha Grandhee
  • Patent number: 7169949
    Abstract: Including a triazine UV light absorber having a silane group in a coating improves scratch and mar resistance after weathering.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: January 30, 2007
    Assignee: BASF Corporation
    Inventors: John E. Boisseau, Swaminathan Ramesh
  • Patent number: 7144966
    Abstract: An acrylic composition is formed by reacting a functionalized, chain-stopping monomer, a first compound, and a highly-branched, polyfunctional core molecule. The first compound includes vinyl functionality and at least one other functionality that is different from the vinyl functionality, such as epoxy functionality. The first compound, specifically the vinyl functionality of the first compound, reacts with the monomer to form a functionalized intermediate, and the core molecule reacts with this functionalized intermediate to form the acrylic composition.
    Type: Grant
    Filed: March 4, 2004
    Date of Patent: December 5, 2006
    Assignee: BASF Corporation
    Inventor: Swaminathan Ramesh
  • Publication number: 20060128901
    Abstract: A coating composition including a copolymerization product of a mixture of monomers including one or more carbamate-functional monomers and (meth)acrylic monomers, some having carboxylic acid-functionality. The monomer mixture is essentially free of hydroxyl monomers. The coating composition may be a solvent-borne clearcoat coating composition, preferably an automotive clearcoat coating composition, that may be applied over a water-borne basecoat coating composition.
    Type: Application
    Filed: September 15, 2005
    Publication date: June 15, 2006
    Applicant: BASF Corporation
    Inventors: Swaminathan Ramesh, Donald Campbell, Marvin Green, Heinz-Peter Rink
  • Patent number: 7045588
    Abstract: A polyester polycarbamate resin composition for use in coating compositions to produce films having improved scratch and mar characteristics. The resin composition is the reaction product of a first compound having a plurality of hydroxyl groups with a carbamate compound reactive with the hydroxyl groups of the first compound and added in an amount sufficient to form a carbamated intermediary. The carbamated intermediary has at least one primary carbamate group available for cross-linking and has unreacted hydroxyl groups. Then, a silyl compound having a terminal isocyanate group is reacted with the unreacted hydroxyl groups of the carbamated intermediary. The silyl compound also has silylalkoxy groups available for secondary cross-linking. The present invention is also directed to a method of preparing the resin composition.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: May 16, 2006
    Assignee: BASF Corporation
    Inventors: Marvin L. Green, Swaminathan Ramesh
  • Patent number: 7041777
    Abstract: A coating composition for producing films having improved scratch and mar characteristics. The coating composition incorporates a polyester polycarbamate resin composition, a first cross-linking agent, and a cross-linkable resin to form the film. The resin composition is the reaction product of a first compound having a plurality of hydroxyl groups with a carbamate compound reactive with the hydroxyl groups of the first compound and added in an amount sufficient to form a carbamated intermediary. The carbamated intermediary has at least one primary carbamate group available for cross-linking and has unreacted hydroxyl groups. Then, a silyl compound having a terminal isocyanate group is reacted with the unreacted hydroxyl groups of the carbamated intermediary. The silyl compound also has silylalkoxy groups available for secondary cross-linking.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: May 9, 2006
    Assignee: BASF Corporation
    Inventors: Swaminathan Ramesh, Marvin L. Green
  • Publication number: 20060074153
    Abstract: Including a triazine UV light absorber having a silane group in a coating improves scratch and mar resistance after weathering.
    Type: Application
    Filed: September 30, 2004
    Publication date: April 6, 2006
    Applicant: BASF CORPORATION
    Inventors: JOHN BOISSEAU, SWAMINATHAN RAMESH
  • Patent number: 7005473
    Abstract: The present invention is directed to a polyester polycarbamate polymeric pigment dispersant to be used as a grind resin to incorporate pigment into pigment dispersions for coating compositions. The pigment dispersant is the reaction product of a first compound having a plurality of hydroxyl groups, a carboxylic acid anhydride, a second compound having at least one epoxy group, and a carbamate compound. The present invention is also directed to a method of preparing the pigment dispersant.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: February 28, 2006
    Assignee: BASF Corporation
    Inventors: Swaminathan Ramesh, Paul Harris
  • Publication number: 20050272884
    Abstract: An acrylic composition, or star acrylic polymer, includes the reaction product of an initiator, a first compound, and a highly-branched, polyfunctional core molecule. The initiator has a radical-forming portion and a functional group. The first compound, which includes a vinyl functional group, is reactive with the initiator to form a functionalized intermediate. The core molecule is reactive with the functionalized intermediate to form the acrylic composition. A method of forming the acrylic composition via free-radical polymerization includes the steps of reacting the initiator and the first compound to form the functionalized intermediate, and reacting the core molecule with the functionalized intermediate to form the acrylic composition.
    Type: Application
    Filed: June 4, 2004
    Publication date: December 8, 2005
    Inventor: Swaminathan Ramesh
  • Publication number: 20050197472
    Abstract: An acrylic composition is formed by reacting a functionalized, chain-stopping monomer, a first compound, and a highly-branched, polyfunctional core molecule. The first compound includes vinyl functionality and at least one other functionality that is different from the vinyl functionality, such as epoxy functionality. The first compound, specifically the vinyl functionality of the first compound, reacts with the monomer to form a functionalized intermediate, and the core molecule reacts with this functionalized intermediate to form the acrylic composition.
    Type: Application
    Filed: March 4, 2004
    Publication date: September 8, 2005
    Inventor: Swaminathan Ramesh
  • Publication number: 20050197451
    Abstract: An acrylic composition includes the reaction product of an acrylic polymer, a carbamate having anhydride-reactive functionality and carbamate functionality, and a carboxylic acid anhydride that is reactive with the carbamate to form a carboxylic acid carbamate. The acrylic polymer includes the reaction product of a functionalized monomer, a first compound reactive with the functionalized monomer to form a functionalized intermediate, and a highly branched, polyfunctional core molecule reactive with the functionalized intermediate. The first compound includes vinyl functionality reactive with the functionalized monomer and epoxy functionality. The carboxylic acid carbamate has the carbamate functionality and carboxylic acid functionality that is reactive with the acrylic polymer.
    Type: Application
    Filed: March 23, 2005
    Publication date: September 8, 2005
    Applicant: BASF Corporation
    Inventors: Swaminathan Ramesh, Marvin Green
  • Publication number: 20050197473
    Abstract: An acrylic composition includes the reaction product of an acrylic polymer, a carboxylic acid compound, and an alkyl carbamate. The acrylic polymer includes the reaction product of a functionalized monomer, a first compound reactive with the functionalized monomer to form a functionalized intermediate, and a highly branched, polyfunctional core molecule reactive with the functionalized intermediate. The first compound includes vinyl functionality reactive with the functionalized monomer and epoxy functionality. The carboxylic acid compound has carboxylic acid functionality that is reactive with the acrylic polymer. The alkyl carbamate is reactive with the hydroxyl-functional acrylic polymer to form the acrylic composition. The acrylic composition is highly-branched and, when used in coating compositions in combination with a suitable cross-linking agent, enhances recoat adhesion and produces cured films that have optimum scratch, mar, and chip performance, and acid etch resistance.
    Type: Application
    Filed: March 23, 2005
    Publication date: September 8, 2005
    Applicant: BASF Corporation
    Inventors: Swaminathan Ramesh, Marvin Green
  • Publication number: 20050197449
    Abstract: An acrylic composition includes the reaction product of an acrylic polymer and carbon dioxide. The acrylic polymer includes the reaction product of a functionalized monomer, a first compound reactive with the functionalized monomer to form a functionalized intermediate, and a highly branched, polyfunctional core molecule reactive with the functionalized intermediate. The first compound includes vinyl functionality reactive with the functionalized monomer. The first compound also includes epoxy functionality. The carbon dioxide is reactive with the acrylic polymer to form a carbonate-functional acrylic polymer. The acrylic composition is highly-branched and, when used in coating compositions in combination with a suitable cross-linking agent, enhances recoat adhesion and produces cured films that have optimum scratch, mar, and chip performance, and acid etch resistance.
    Type: Application
    Filed: March 23, 2005
    Publication date: September 8, 2005
    Applicant: BASF Corporation
    Inventors: Swaminathan Ramesh, Marvin Green
  • Publication number: 20050182231
    Abstract: A polyester polycarbamate resin composition for use in coating compositions to produce films having improved scratch and mar characteristics. The resin composition is the reaction product of a first compound having a plurality of hydroxyl groups with a carbamate compound reactive with the hydroxyl groups of the first compound and added in an amount sufficient to form a carbamated intermediary. The carbamated intermediary has at least one primary carbamate group available for cross-linking and has unreacted hydroxyl groups. Then, a silyl compound having a terminal isocyanate group is reacted with the unreacted hydroxyl groups of the carbamated intermediary. The silyl compound also has silylalkoxy groups available for secondary cross-linking. The present invention is also directed to a method of preparing the resin composition.
    Type: Application
    Filed: February 12, 2004
    Publication date: August 18, 2005
    Inventors: Marvin Green, Swaminathan Ramesh