Patents Assigned to PRC-Desoto International, Inc.
  • PERFLUOROETHER SEALANT COMPOSITIONS
    Publication number: 20150110952
    Abstract: Disclosed are perfluoroethers and perfluoroether compositions useful in high temperature aerospace applications. The perfluoroethers can be adapted for use with various curing chemistries.
    Type: Application
    Filed: January 6, 2015
    Publication date: April 23, 2015
    Applicant: PRC-DeSoto International, Inc.
    Inventors: Chandra Rao, Juexiao Cai, Renhe Lin
  • Multifunctional sulfur-containing polymers, compositions thereof and methods of use
    Patent number: 9012592
    Abstract: Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: April 21, 2015
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Steven J. Hobbs, Gregory J. McCollum, Juexiao Cai, Marfi Ito, Lawrence G. Anderson, Renhe Lin
  • Controlled-release amine-catalyzed, sulfur-containing polymer and epdxy compositions
    Patent number: 9006360
    Abstract: Compositions comprising sulfur-containing polymers such as polythioethers and polysulfides, polyepoxides, and controlled-release amine catalysts useful in aerospace sealant applications are disclosed. The compositions exhibit extended pot life and the rate of curing can be tailored for specific applications.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: April 14, 2015
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Raquel Keledjian, Lawrence G. Anderson, Renhe Lin
  • COMPOSITIONS COMPRISING MAGNESIUM OXIDE AND AMINO ACID
    Publication number: 20150072161
    Abstract: A coating comprising MgO, amino acid and a film-forming resin are disclosed as are methods of curing such a coating to coat at least a portion of a substrate and a substrate coated thereby.
    Type: Application
    Filed: September 11, 2013
    Publication date: March 12, 2015
    Applicant: PRC-DeSoto International, Inc.
    Inventors: Michael A. Mayo, Elizabeth A. Furar, Paul Rushman, Jonathan P. Breon
  • Nut Plate Seal Caps
    Publication number: 20150063945
    Abstract: A cap (10) for sealing a mechanical fastener (200), method for making the cap, and driver and method for applying the cap is disclosed. The cap includes a shell having an exterior surface (14) and an interior surface (16) defining a cavity (18), an opening (19) extending through the shell between the interior and exterior surfaces, and a sealant (13) at least partially filling the cavity. A package and a holder for holding a plurality of cap assemblies are also disclosed.
    Type: Application
    Filed: March 15, 2013
    Publication date: March 5, 2015
    Applicant: PRC-DeSoto International, Inc.
    Inventors: George C. Obuhowich, Soccorso Rizzello, Russell Shellenberger
  • Perfluoroether sealant compositions
    Patent number: 8962782
    Abstract: Disclosed are perfluoroethers and perfluoroether compositions useful in high temperature aerospace applications. The perfluoroethers can be adapted for use with various curing chemistries.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: February 24, 2015
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Chandra Rao, Juexiao Cai, Renhe Lin
  • Bis(sulfonyl)alkanol-containing polythioethers, methods of synthesis, and compositions thereof
    Patent number: 8952124
    Abstract: Bis(sulfonyl)alkanol-containing polythioethers, compositions containing bis(sulfonyl)alkanol-containing polythioethers, methods of synthesizing bis(sulfonyl)alkanol-containing polythioethers and the use of bis(sulfonyl)alkanol-containing polythioethers in aerospace sealant applications are disclosed. The bis(sulfonyl)alkanol-containing polythioethers have bis(sulfonyl)alkanol groups incorporated into the backbone of the polythioether. Cured sealant compositions comprising the bis(sulfonyl)alkanol-containing polythioethers exhibit enhanced properties suitable for aerospace sealant applications.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: February 10, 2015
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Chandra Rao, Juexiao Cai, Renhe Lin
  • Moisture-curable, amine-catalyzed sulfur-containing polymer compositions
    Patent number: 8952110
    Abstract: Disclosed are moisture-curable, amine-catalyzed compositions containing sulfur-containing polymers and blocked basic catalysts having extended pot life. The use of the moisture-curable, amine-catalyzed compositions in aerospace sealant applications is also disclosed.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: February 10, 2015
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Juexiao Cai, Renhe Lin
  • Methods for making cured sealants by actinic radiation and related compositions
    Patent number: 8932685
    Abstract: Disclosed are methods for making a cured sealant. The methods include depositing an uncured sealant composition on a substrate and exposing the uncured sealant composition to actinic radiation to provide a cured sealant. The uncured sealant composition includes a thiol-terminated polythioether and a polyene comprising a polyvinyl ether and/or a polyallyl compound. Related sealant compositions are also disclosed.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: January 13, 2015
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Raquel Keledjian, Renhe Lin, Chandra Rao, Bruce Virnelson
  • Polythioethers, moisture curable compositions and methods for their manufacture and use
    Patent number: 8901256
    Abstract: One-part moisture curable sealant compositions and methods of making the same are provided. The compositions include a silyl-functional polythioether and a polyepoxide. Methods of making sealant compositions are also provided.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: December 2, 2014
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Carissa Pajel, Alfredo M. Reyes, Jr., Raquel A. Keledjian, Gordon Zabrecky
  • Terminal-modified difunctional sulfur-containing polymers, compositions thereof and methods of use
    Patent number: 8889800
    Abstract: Disclosed are terminal-modified difunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, an aldehyde or a ketone, and a compound containing a functional group. Compositions comprising the terminal-modified difunctional sulfur-containing polymers useful as sealants are also disclosed.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: November 18, 2014
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Steven J. Hobbs, Gregory J. McCollum, Lawrence G. Anderson, Renhe Lin
  • Michael addition curing chemistries for sulfur-containing polymer compositions
    Patent number: 8871896
    Abstract: The use of Michael addition curing chemistries in compositions comprising sulfur-containing polymers such as polythioethers and polysulfides useful in aerospace sealant applications are disclosed. Sulfur-containing adducts comprising terminal Michael acceptor groups are also disclosed.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: October 28, 2014
    Assignee: PRC DeSoto International, Inc.
    Inventors: Lawrence G. Anderson, Juexiao Cai, Marfi Ito, Raquel Keledjian, Renhe Lin
  • METAL LIGAND-CONTAINING PREPOLYMERS, METHODS OF SYNTHESIS, AND COMPOSITIONS THEREOF
    Publication number: 20140275474
    Abstract: Metal ligand-containing prepolymers, compositions containing metal ligand-containing prepolymers, methods of synthesizing metal ligand-containing prepolymers and the use of metal ligand-containing prepolymers in aerospace sealant applications are disclosed. The metal ligand-containing prepolymers have metal ligands incorporated into the backbone of the prepolymer. Cured sealant compositions comprising the metal ligand-containing prepolymers exhibit enhanced properties suitable for aerospace sealant applications.
    Type: Application
    Filed: October 29, 2013
    Publication date: September 18, 2014
    Applicant: PRC-DeSoto International, Inc.
    Inventors: Chandra Rao, Jun Deng, Renhe Lin
  • STRIPPABLE FILM ASSEMBLY AND COATING FOR DRAG REDUCTION
    Publication number: 20140272237
    Abstract: An assembly includes a substrate, a film on the substrate, and a coating on the film. The film includes a material permeable to organic solvents, and the coating includes a material reactive with the film. Alternatively, the assembly may include a substrate including a textured region, and a coating on the textured region. The coating mimics the texture of the textured. In an alternative embodiment, a laminate includes a film including a material permeable to organic solvents, a coating on the film, and an adhesive on a second surface of the film. The coating includes a material reactive with the film. In another embodiment, a method for reducing drag on a substrate includes applying a film on a substrate, and applying a coating on the film. The film includes a material permeable to organic solvents, and the coating includes a material reactive with the film.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: PRC-DeSoto International, Inc.
    Inventors: Todd M. Roper, Mark P. Bowman, Edward F. Rakiewicz
  • SULFONE-CONTAINING POLYTHIOETHERS, COMPOSITIONS THEREOF, AND METHODS OF SYNTHESIS
    Publication number: 20140275461
    Abstract: Sulfone-containing polythioethers, compositions containing sulfone-containing polythioethers, methods of synthesizing sulfone-containing polythioethers and the use of sulfone-containing polythioethers in aerospace sealant applications are disclosed. The sulfone-containing polythioethers have sulfone groups incorporated into the backbone of the polythioether. Cured sealant compositions comprising the sulfone-containing polythioethers exhibit enhanced thermal resistance.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: PRC-DeSoto International, Inc.
    Inventors: Chandra Rao, Juexiao Cai, Renhe Lin
  • Flexible polyamines, flexible amine-terminated adducts, compositions thereof and methods of use
    Patent number: 8816044
    Abstract: Disclosed are flexible polyamines, flexible amine-terminated polyformal adducts, flexible-amine-terminated polythioether adducts, compositions comprising flexible polyamines and isocyanate-terminated prepolymers, and compositions comprising flexible amine-terminated adducts and isocyanate-terminated prepolymers. Uses of the compositions as sealants, and particularly as aerospace sealants, are also disclosed.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: August 26, 2014
    Assignee: PRC DeSoto International, Inc
    Inventors: Stephen J. Hobbs, Marfi Ito, Juexiao Cai, Chandra Rao, Renhe Lin
  • Polyurea compositions and methods of use
    Patent number: 8802790
    Abstract: Disclosed are polyurea compositions comprising the reaction products of a polyformal-isocyanate prepolymer and a curing agent comprising an amine. The compositions are useful as sealants in aerospace applications.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: August 12, 2014
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Steven J. Hobbs, Juexiao Cai, Marfi Ito, Renhe Lin
  • COMPOSITIONS COMPRISING THIOL-TERMINATED POLYMERS AND SULFUR-CONTAINING ETHYLENICALLY UNSATURATED SILANES AND RELATED CURED SEALANTS
    Publication number: 20140186543
    Abstract: Disclosed are compositions that include: a) a thiol-terminated polymer; and b) a sulfur-containing ethylenically unsaturated silane. Related products, such as sealants, that include polymers derived from such compositions, are also disclosed.
    Type: Application
    Filed: March 7, 2014
    Publication date: July 3, 2014
    Applicant: PRC-DeSoto International, Inc.
    Inventors: Raquel Keledjian, Renhe Lin, Chandra Rao, Bruce Virnelson
  • Terminal-modified difunctional sulfur-containing polymers, compositions thereof and methods of use
    Patent number: 8765880
    Abstract: Disclosed are terminal-modified difunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, an aldehyde or a ketone, and a compound containing a functional group. Compositions comprising the terminal-modified difunctional sulfur-containing polymers useful as sealants are also disclosed.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: July 1, 2014
    Assignee: PRC DeSoto International, Inc.
    Inventors: Stephen J. Hobbs, Gregory J. McCollum, Lawrence G. Anderson, Renhe Lin
  • Coating compositions with an isocyanate-functional prepolymer derived from a tricyclodecane polyol, methods for their use, and related coated substrates
    Patent number: 8758862
    Abstract: Coating compositions include (a) an isocyanate functional prepolymer derived from a polyisocyanate and a tricyclodecane-containing polyester polyol; and (b) a blocked amine curing agent.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: June 24, 2014
    Assignee: PRC DeSoto International, Inc.
    Inventors: Siamanto Abrami, Guangliang Tang