Patents by Inventor Sheau-Hwa Ma

Sheau-Hwa Ma 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: 8771784
    Abstract: The present invention is directed to a method for producing a coating having a desired gloss value on a substrate. This invention is also directed to method for producing a predicted gloss value of a coating on a substrate. This invention is further directed to a method of using a matting agent comprising components derived from renewable resources.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: July 8, 2014
    Assignee: Axalta Coating Systems IP Co., LLC
    Inventors: Ayumu Yokoyama, Rajesh Gopalan Saliya, Sheau-Hwa Ma
  • Publication number: 20130309516
    Abstract: The present disclosure is directed to a coating composition having excellent adhesion to primer layers, fast drying, improved flexibility and good pot life. This disclosure is further directed to a coating composition comprising components derived from renewable resources, low Tg acrylic polymers having one or more crosslinkable functional groups and a crosslinking agent having one or more crosslinking functional groups.
    Type: Application
    Filed: July 23, 2013
    Publication date: November 21, 2013
    Applicant: U S COATINGS IP CO LLC
    Inventors: AYUMU YOKOYAMA, Patricia Mary Ellen Sormani, Sheau-Hwa Ma, James Lamonte Adams
  • Publication number: 20130310510
    Abstract: This invention relates to rapid drying lacquers that are particularly useful for automotive OEM refinish applications. The lacquer includes a novel graft copolymer with segmented (or block) arms as a replacement material for all or part of the cellulose acetate butyrate binder component. This invention is also directed to a process for producing coatings from the rapid drying lacquers. These lacquers are especially useful in providing chip and humidity resistant coatings, especially metallic effect coatings, having excellent adhesion and down flop or metallic effect.
    Type: Application
    Filed: July 25, 2013
    Publication date: November 21, 2013
    Applicant: AXALTA COATING SYSTEMS IP CO LLC
    Inventors: ROBERT JAMES BUTERA, RENEE J. KELLY, SHEAU-HWA MA
  • Patent number: 8415015
    Abstract: The present invention is directed to a matting agent for reducing gloss of a coating. The matting agent comprises: a) a silica component; b) a polytrimethylene ether diol; c) one or more solvents; and d) optionally, one or more polymers. This invention is further directed to a matting agent comprising components derived from renewable resources.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: April 9, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Ayumu Yokoyama, Rajesh Gopalan Saliya, Sheau-Hwa Ma
  • Patent number: 8357456
    Abstract: Disclosed is a solventborne coating composition that provides a high quality basecoat especially for automotive substrates, methods for forming a layer of the solventborne coating composition and substrates coated with the coating composition. The coating composition contains an acrylic polymer that has both acid functional groups and polyether functional groups.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: January 22, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventor: Sheau-Hwa Ma
  • Patent number: 8349407
    Abstract: The present disclosure is directed to a coating composition that is capable of producing coatings being sag-free at high coating thicknesses, having excellent adhesion to substrates, and good appearance. This disclosure is further directed to a coating composition comprising components derived from renewable resources.
    Type: Grant
    Filed: January 12, 2011
    Date of Patent: January 8, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Rajesh Gopalan Saliya, Ayumu Yokoyama, Patricia Mary Ellen Sormani, Sheau-Hwa Ma, Eric C. Houze, Delson Jayme Trindade
  • Publication number: 20120177916
    Abstract: The present disclosure is directed to a coating composition that is capable of producing coatings being sag-free at high coating thicknesses, having excellent adhesion to substrates, and good appearance. This disclosure is further directed to a coating composition comprising components derived from renewable resources.
    Type: Application
    Filed: January 12, 2011
    Publication date: July 12, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: RAJESH GOPALAN SALIYA, AYUMU YOKOYAMA, PATRICIA MARY ELLEN SORMANI, SHEAU-HWA MA, ERIC C. HOUZE, DELSON JAYME TRINDADE
  • Publication number: 20120171478
    Abstract: The present disclosure is directed to a sag control agent comprising a reaction product of an isocyanate and a fluorinated amine. This disclosure is further directed to a coating composition comprising the sag control agent. This disclosure is also directed to a process of forming a sag-free coating layer on a substrate.
    Type: Application
    Filed: September 16, 2010
    Publication date: July 5, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Rajesh Gopalan Saliya, Ayumu Yokoyama, Sheau-Hwa Ma, Axel Hans-Joachim Herzog
  • Publication number: 20120094012
    Abstract: The present invention is directed to a method for producing a coating having a desired gloss value on a substrate. This invention is also directed to method for producing a predicted gloss value of a coating on a substrate. This invention is further directed to a method of using a matting agent comprising components derived from renewable resources.
    Type: Application
    Filed: May 5, 2010
    Publication date: April 19, 2012
    Applicant: E.I. Du Pont De Nemours and Company
    Inventors: Ayumu Yokoyama, Rajesh Gopalan Saliya, Sheau-Hwa Ma
  • Publication number: 20120083552
    Abstract: A pigment dispersant comprising a graft copolymer is described. The graft copolymer comprises a backbone having polymerized vinyl imidazole groups and side chains from macromonomers. The vinyl imidazole comprises 2 percent to 20 percent by weight of the graft copolymer and the macromonomer comprises 55 percent to 85 percent by weight of the graft copolymer. The pigment dispersant is useful for forming pigment dispersions that can be used in solvent borne coating compositions.
    Type: Application
    Filed: June 28, 2010
    Publication date: April 5, 2012
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Sheau-Hwa Ma
  • Publication number: 20120041138
    Abstract: The present invention is a process for producing a linear block copolymer, useful as a dispersant for pigment, wherein the block copolymer comprises acetoacetyl amine functional groups which serve as pigment anchoring groups. The linear block copolymer can be an AB, ABC, or ABA block copolymer. The linear block copolymer produced by the present invention can be useful in dispersing and stabilizing a wide range of pigments in solvent based systems, and are particularly useful in providing pigment dispersions that are used in coating compositions for automobiles and trucks, where they provide improved efficiency of pigment use, lower paint viscosity, and reduced emission of volatile organic solvent.
    Type: Application
    Filed: October 25, 2011
    Publication date: February 16, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: SHEAU-HWA MA
  • Publication number: 20110257330
    Abstract: The present invention is directed to an aqueous coating composition comprising a polymer having one or more crosslinkable functional groups; a polytrimethylene ether diol from renewable resource having a Mn (number average molecular weight) in a range of from 500 to 10,000; and a crosslinking agent. The aqueous coating composition comprises in a range of from 10% to 80% of water.
    Type: Application
    Filed: December 28, 2009
    Publication date: October 20, 2011
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Ayumu Yokoyama, Sheau-Hwa Ma, Rajesh Gopalan Saliya
  • Publication number: 20110165423
    Abstract: The present disclosure is directed to a coating composition having excellent adhesion and balanced coating properties. This disclosure is further directed to a coating composition comprising components derived from renewable resources.
    Type: Application
    Filed: October 12, 2009
    Publication date: July 7, 2011
    Applicant: E.I. DuPont de Nemours and Company
    Inventors: Sheau-Hwa Ma, Ayumu Yokoyama, Rajesh Gopalan Saliya, Patricia Mary Ellen Sormani
  • Publication number: 20110144263
    Abstract: The present invention is directed to a linear block copolymer, useful as a dispersant for pigment, wherein the block copolymer comprises acetoacetyl amine functional groups which serve as pigment anchoring groups. The linear block copolymer of this invention can be an AB, ABC, or ABA block copolymer. The present invention can be useful in dispersing and stabilizing a wide range of pigments in solvent based systems, and are particularly useful in providing pigment dispersions that are used in coating compositions for automobiles and trucks, where they provide improved efficiency of pigment use, lower paint viscosity, and reduced emission of volatile organic solvent.
    Type: Application
    Filed: September 25, 2009
    Publication date: June 16, 2011
    Applicant: E.I DU PONT DE NEMOURS AND COMPANY
    Inventor: Sheau-Hwa Ma
  • Publication number: 20110117379
    Abstract: Disclosed is a solventborne coating composition that provides a high quality basecoat especially for automotive substrates, methods for forming a layer of the solventborne coating composition and substrates coated with the coating composition. The coating composition contains an acrylic polymer that has both acid functional groups and polyether functional groups.
    Type: Application
    Filed: December 22, 2008
    Publication date: May 19, 2011
    Applicant: E.I.DU PONT DE NEMOURS AND COMPANY
    Inventor: Sheau-Hwa Ma
  • Patent number: 7910644
    Abstract: The present disclosure is directed to a coating composition that is capable of producing coatings being sag-free at high coating thicknesses, having excellent adhesion to substrates, and good appearance. This disclosure is further directed to a coating composition comprising components derived from renewable resources.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: March 22, 2011
    Assignee: E.I. du Pont de Nemours & Company
    Inventors: Rajesh Gopalan Saliya, Ayumu Yokoyama, Patricia Mary Ellen Sormani, Sheau-Hwa Ma, Eric C. Houze, Delson Jayme Trindade
  • Publication number: 20110052920
    Abstract: The present disclosure is directed to a coating composition having excellent adhesion and flexibility. This invention is further directed to a coating composition comprising components derived from renewable resources.
    Type: Application
    Filed: June 18, 2009
    Publication date: March 3, 2011
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Ayumu Yokoyama, Sheau-Hwa Ma, Patricia Mary Ellen Sormani
  • Publication number: 20110052919
    Abstract: The present disclosure is directed to a coating composition having excellent adhesion to primer layers, fast drying, improved flexibility and good pot life. This disclosure is further directed to a coating composition comprising components derived from renewable resources, low Tg acrylic polymers having one or more crosslinkable functional groups and a crosslinking agent having one or more crosslinking functional groups.
    Type: Application
    Filed: April 17, 2009
    Publication date: March 3, 2011
    Inventors: Ayumu Yokoyama, Patricia Mary Ellen Sormani, Sheau-Hwa Ma, James Lamonte Adams
  • Publication number: 20110046313
    Abstract: This invention relates to rapid drying lacquers that are particularly useful for automotive OEM refinish applications. The lacquer includes a novel acrylic triblock copolymer as a replacement material for all or part of the cellulose acetate butyrate binder component. This invention is also directed to a process for producing coatings from the rapid drying lacquers. These lacquers are especially useful in providing chip and humidity resistant coatings, especially metallic effect coatings, having excellent adhesion and down flop or metallic effect.
    Type: Application
    Filed: November 4, 2010
    Publication date: February 24, 2011
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: SHEAU-HWA MA, Renee J. Kelly
  • Publication number: 20100286313
    Abstract: This invention relates to rapid drying lacquers that are particularly useful for automotive OEM refinish applications. The lacquer includes a novel acrylic triblock copolymer as a replacement material for all or part of the cellulose acetate butyrate binder component. This invention is also directed to a process for producing coatings from the rapid drying lacquers. These lacquers are especially useful in providing chip and humidity resistant coatings, especially metallic effect coatings, having excellent adhesion and down flop or metallic effect.
    Type: Application
    Filed: June 25, 2010
    Publication date: November 11, 2010
    Inventors: SHEAU-HWA MA, Renee J. Kelly