Patents by Inventor Deepanjan Bhattacharya

Deepanjan Bhattacharya 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: 20130296470
    Abstract: Disclosed are solvent borne thermosetting coating compositions that contain a curable polyester resin blended with an acrylic copolymer, a crosslinker, and a solvent. The polyester resin contains 2,2,4,4-tetramethyl-1,3-cyclobutanediol and exhibits good dry time, compatibility with acrylic resins, sag resistance and hardness development in a coating composition. The coating compositions can be used to prepare clear coat or pigmented coatings for automotive OEM, auto refinish, and other applications.
    Type: Application
    Filed: July 9, 2013
    Publication date: November 7, 2013
    Inventors: Stacey James Marsh, Angela Hartley Honeycutt, Deepanjan Bhattacharya
  • Patent number: 8524834
    Abstract: Disclosed are solvent borne thermosetting coating compositions that contain a curable polyester resin blended with an acrylic copolymer, a crosslinker, and a solvent. The polyester resin contains 2,2,4,4-tetramethyl-1,3-cyclobutanediol and exhibits good dry time, compatibility with acrylic resins, sag resistance and hardness development in a coating composition. The coating compositions can be used to prepare clear coat or pigmented coatings for automotive OEM, auto refinish, and other applications.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: September 3, 2013
    Assignee: Eastman Chemical Company
    Inventors: Stacey James Marsh, Angela Hartley Honeycutt, Deepanjan Bhattacharya
  • Patent number: 8461234
    Abstract: A refinish coating composition is provided comprising: a) at least one refinish coating resin; b) at least one solvent; c) at least one pigment; d) optionally, at least one crosslinking agent; e) at least one cellulose mixed ester having a weight average molecular weight (Mw) greater than 10,000 and f) at least one low molecular weight cellulose mixed ester. In addition, processes for coating the refinish coating composition on a substrate are also provided.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: June 11, 2013
    Assignee: Eastman Chemical Company
    Inventors: Deepanjan Bhattacharya, Roy Glenn Foulk, Hampton Loyd Chip Williams, III, Michael Charles Shelton, Jessica Dee Posey-Dowty, Daniel Wayne Dixon, Jr., Paul Lee Lucas, Alan Kent Wilson, Kenneth Raymond Walker, Jonathan Edward Lawniczak, Hieu Duy Phan, Charlie Carroll Freeman, Jr., Lisa Perdomo
  • Publication number: 20120202920
    Abstract: Disclosed are solvent borne thermosetting coating compositions that contain a curable polyester resin blended with an acrylic copolymer, a crosslinker, and a solvent. The polyester resin contains 2,2,4,4-tetramethyl-1,3-cyclobutanediol and exhibits good dry time, compatibility with acrylic resins, sag resistance and hardness development in a coating composition. The coating compositions can be used to prepare clear coat or pigmented coatings for automotive OEM, auto refinish, and other applications.
    Type: Application
    Filed: March 30, 2012
    Publication date: August 9, 2012
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: Stacey James Marsh, Angela Hartley Honeycutt, Deepanjan Bhattacharya
  • Patent number: 8168721
    Abstract: Disclosed are solvent borne thermosetting coating compositions that contain a curable polyester resin blended with an acrylic copolymer, a crosslinker, and a solvent. The polyester resin contains 2,2,4,4-tetramethyl-1,3-cyclobutanediol and exhibits good dry time, compatibility with acrylic resins, sag resistance and hardness development in a coating composition. The coating compositions can be used to prepare clear coat or pigmented coatings for automotive OEM, auto refinish, and other applications.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: May 1, 2012
    Assignee: Eastman Chemical Company
    Inventors: Stacey James Marsh, Angela Hartley Honeycutt, Deepanjan Bhattacharya
  • Patent number: 8124676
    Abstract: A basecoat composition is provided comprising: a) at least one film-forming polymer selected from the group consisting of acrylic polyols and polyester polyols; b) at least one rheological modifier; c) at least one solvent; d) at least one pigment; e) optionally, at least one microgel; f) optionally, at least one crosslinking agent; and g) at least one cellulose mixed ester. A wet-on-wet-on wet process is also provided. The process for coating a substrate comprises: a) applying a primer to said substrate to produce a primed substrate; b) applying a basecoat composition to said primed substrate while said primer is wet to produce a basecoated substrate; and c) applying a clearcoat composition to said basecoated substrate while said basecoat composition is wet and optionally said primer is wet to produce a coated substrate. Coated articles are also provided.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: February 28, 2012
    Assignee: Eastman Chemical Company
    Inventors: Deepanjan Bhattacharya, Roy Glenn Foulk, Hampton Loyd Chip Williams, III, Michael Charles Shelton, Jessica Dee Posey-Dowty, Luis Guillermo Rios Perdomo, Daniel Wayne Dixon, Jr., Paul Lee Lucas, Alan Kent Wilson, Kenneth Raymond Walker, Jonathan Edward Lawniczak, Hieu Duy Phan, Charlie Carroll Freeman, Jr.
  • Publication number: 20110020559
    Abstract: A refinish coating composition is provided comprising: a) at least one refinish coating resin; b) at least one solvent; c) at least one pigment; d) optionally, at least one crosslinking agent; e) at least one cellulose mixed ester having a weight average molecular weight (Mw) greater than 10,000 and f) at least one low molecular weight cellulose mixed ester. In addition, processes for coating the refinish coating composition on a substrate are also provided.
    Type: Application
    Filed: March 22, 2010
    Publication date: January 27, 2011
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: Deepanjan Bhattacharya, Roy Glenn Foulk, Hampton Loyd Chip Williams, III, Michael Charles Shelton, Jessica Dee Posey-Dowty, Luis Guillermo Rios Perdomo, Daniel Wayne Dixon, JR., Paul Lee Lucas, Alan Kent Wilson, Kenneth Raymond Walker, Jonathan Edward Lawniczak, Hieu Duy Phan, Charlie Carroll Freeman, JR., Lisa Perdomo
  • Publication number: 20100204363
    Abstract: Disclosed are solvent borne thermosetting coating compositions that contain a curable polyester resin blended with an acrylic copolymer, a crosslinker, and a solvent. The polyester resin contains 2,2,4,4-tetramethyl-1,3-cyclobutanediol and exhibits good dry time, compatibility with acrylic resins, sag resistance and hardness development in a coating composition. The coating compositions can be used to prepare clear coat or pigmented coatings for automotive OEM, auto refinish, and other applications.
    Type: Application
    Filed: February 6, 2009
    Publication date: August 12, 2010
    Applicant: Eastman Chemical Company
    Inventors: Stacey James Marsh, Angela Hartley Honeycutt, Deepanjan Bhattacharya
  • Publication number: 20100152336
    Abstract: A basecoat composition is provided comprising: a) at least one film-forming polymer selected from the group consisting of acrylic polyols and polyester polyols; b) at least one rheological modifier; c) at least one solvent; d) at least one pigment; e) optionally, at least one microgel; f) optionally, at least one crosslinking agent; and g) at least one cellulose mixed ester. A wet-on-wet-on wet process is also provided. The process for coating a substrate comprises: a) applying a primer to said substrate to produce a primed substrate; b) applying a basecoat composition to said primed substrate while said primer is wet to produce a basecoated substrate; and c) applying a clearcoat composition to said basecoated substrate while said basecoat composition is wet and optionally said primer is wet to produce a coated substrate. Coated articles are also provided.
    Type: Application
    Filed: September 15, 2009
    Publication date: June 17, 2010
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: Deepanjan Bhattacharya, Roy Glenn Foulk, Hampton Loyd Chip Williams, III, Michael Charles Shelton, Jessica Dee Posey-Dowty, Luis Guillermo Rios Perdomo, Daniel Wayne Dixon, JR., Paul Lee Lucas, Alan Kent Wilson, Kenneth Raymond Walker, Jonathan Edward Lawniczak, Hieu Duy Phan, Charlie Carroll Freeman, JR.
  • Publication number: 20080090960
    Abstract: A coating composition is provided comprising: a) at least one hydroxyl-containing polymer; b) at least one low molecular weight hydroxyl-containing polymer; c) at least one crosslinking agent; d) at least one curing catalyst; and e) a cellulose mixed ester. In addition, articles comprising the coating composition are also provided.
    Type: Application
    Filed: September 17, 2007
    Publication date: April 17, 2008
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: Deepanjan Bhattacharya, Hampton Williams, Roy Foulk
  • Publication number: 20080085953
    Abstract: Coating compositions are provided comprising: a) at least one hydroxy-containing acrylic polymer; b) at least one low molecular weight hydroxy-containing acrylic polymer; c) at least one crosslinking agent; d) at least one curing catalyst; and e) at least one cellulose mixed ester. Articles comprises the coating compositions are also provided.
    Type: Application
    Filed: June 4, 2007
    Publication date: April 10, 2008
    Inventors: Deepanjan Bhattacharya, Hampton Loyd Chip Williams,, Roy Glenn Foulk
  • Publication number: 20080069963
    Abstract: A process for reducing the VOC content of a coating composition or a refinish composition is provided. The process comprises contacting at least one hydroxyl-containing acrylic polymer, at least one low molecular weight hydroxyl-containing acrylic polymer, at least one cellulose mixed ester, at least one crosslinking agent, and at least one curing catalyst to produce the coating composition; applying the coating composition to a substrate; and drying the coating composition.
    Type: Application
    Filed: September 17, 2007
    Publication date: March 20, 2008
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: Deepanjan Bhattacharya, Hampton Williams, Roy Foulk
  • Publication number: 20070282038
    Abstract: A process for improving the anti-sag, leveling, and gloss of a coating composition is provided. The process comprises contacting at least one hydroxy-containing acrylic polymer, at least one cellulose mixed ester, at least one crosslinking agent, and at least one curing catalyst to produce the coating composition; applying the coating composition to a substrate; and drying the coating composition; wherein the 20 degree gloss of the coating composition is improved over a coating composition without the cellulose mixed ester.
    Type: Application
    Filed: June 4, 2007
    Publication date: December 6, 2007
    Inventors: Deepanjan Bhattacharya, Hampton Williams, Roy Foulk