Patents Assigned to PRC-Desoto International, Inc.
  • Phosphine-catalyzed, michael addition-curable sulfur-containing polymer compositions
    Patent number: 9328275
    Abstract: Compositions comprising Michael acceptor-terminated sulfur-containing prepolymers, thiol-terminated sulfur-containing prepolymers, and e phosphine catalysts useful in aerospace sealant applications are disclosed. The compositions exhibit extended pot life, cure rapidly following activation, and provide cured sealants having improved properties useful in aerospace sealant applications.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: May 3, 2016
    Assignee: PRC DeSoto International, Inc.
    Inventors: Lawrence G. Anderson, Juexiao Cai, Mark P. Bowman, Renhe Lin
  • Adhesion promoting adducts containing metal ligands, compositions thereof, and uses thereof
    Patent number: 9303149
    Abstract: Disclosed are adhesion promoting adducts containing adhesion promoting groups and metal ligands and compositions such as sealant compositions useful in aerospace applications comprising the adhesion promoting adducts. The adhesion promoting adducts are useful as adhesion promoting additives or as a copolymerizable reactant in polymer compositions.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: April 5, 2016
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Chandra Rao, Jun Deng, Renhe Lin
  • Multifunctional sulfur-containing polymers, compositions thereof and methods of use
    Patent number: 9260567
    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: July 9, 2015
    Date of Patent: February 16, 2016
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Steven J. Hobbs, Gregory J. McCollum, Juexiao Cai, Marfi Ito, Lawrence G. Anderson, Renhe Lin
  • Azole Compounds as Corrosion Inhibitors
    Publication number: 20160040300
    Abstract: A composition for application to a metal substrate comprises a metal cation, an azole compound and an aqueous carrier. A composition for coating a substrate comprises a carrier comprising an epoxy carrier, a urethane carrier, or a fluorinated urethane carrier, and an azole compound. A coated substrate includes the composition for application to a metal substrate and a coating on the composition. A method of fabricating a coated substrate comprises applying the composition to a substrate, allowing the composition to dry to form a conversion coating, and applying a coating on the conversion coating.
    Type: Application
    Filed: March 13, 2014
    Publication date: February 11, 2016
    Applicant: PRC- DeSoto International, Inc.
    Inventor: Eric L. Morris
  • Coating/sealant systems, aqueous resinous dispersions, and methods of electrocoating
    Patent number: 9181628
    Abstract: A coating/sealant system that includes a coating and a sealant deposited over at least a portion of the coating, in which the coating includes a reaction product formed from reactants comprising a phosphated epoxy resin and a curing agent, and the sealant includes a sulfur-containing polymer.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: November 10, 2015
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Joseph Theodore Valko, Robin M. Peffer, Michael A. Mayo, Lawrence G. Anderson, Thor G. Lingenfelter, Beth Furar
  • Perfluoroether sealant compositions
    Patent number: 9169424
    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: January 6, 2015
    Date of Patent: October 27, 2015
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Chandra Rao, Juexiao Cai, Renhe Lin
  • MICHAEL ACCEPTOR-TERMINATED URETHANE-CONTAINING FUEL RESISTANT PREPOLYMERS AND COMPOSITIONS THEREOF
    Publication number: 20150252232
    Abstract: Urethane-containing prepolymers formed from diisocyanates and adapted for Michael addition curing chemistries and compositions thereof for use in sealant applications are disclosed. The prepolymers provide compositions that exhibit room temperature stability and a controlled curing rate following a brief activation.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 10, 2015
    Applicant: PRC-DeSoto International, Inc.
    Inventors: Raquel Keledjian, Marfi Ito, Renhe Lin
  • MOISTURE-CURABLE URETHANE-CONTAINING FUEL RESISTANT PREPOLYMERS AND COMPOSITIONS THEREOF
    Publication number: 20150252230
    Abstract: Moisture-curable, urethane-containing prepolymers containing urethanes incorporated into the prepolymer backbone and compositions thereof for use in sealant applications are disclosed. The prepolymers provide cured compositions exhibiting improved tensile strength.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 10, 2015
    Applicant: PRC-DeSoto International, Inc.
    Inventors: Raquel Keledjian, Renhe Lin
  • PHOSPHINE-CATALYZED. MICHAEL ADDITION-CURABLE SULFUR-CONTAINING POLYMER COMPOSITIONS
    Publication number: 20150252233
    Abstract: Compositions comprising Michael acceptor-terminated sulfur-containing prepolymers, thiol-terminated sulfur-containing prepolymers, and e phosphine catalysts useful in aerospace sealant applications are disclosed. The compositions exhibit extended pot life, cure rapidly following activation, and provide cured sealants having improved properties useful in aerospace sealant applications.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 10, 2015
    Applicant: PRC-DeSoto International, Inc.
    Inventors: LAWRENCE G. ANDERSON, JUEXIAO CAl, MARK P. BOWMAN, RENHE LIN
  • Multifunctional sulfur-containing polymers, compositions thereof and methods of use
    Patent number: 9109089
    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: March 13, 2015
    Date of Patent: August 18, 2015
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Steven J. Hobbs, Gregory J. McCollum, Juexiao Cai, Marfi Ito, Lawrence G. Anderson, Renhe Lin
  • Diethylene glycol monomethyl ether resistant coating
    Patent number: 9080004
    Abstract: Diethylene glycol monomethyl ether resistant coatings include a base component including a sulfur-containing, epoxy functional polyol, and an activator component including an isocyanate curing agent.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: July 14, 2015
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Siamanto Abrami, Jin Song, Guangliang Tang
  • Compositions comprising thiol-terminated polymers and sulfur-containing ethylenically unsaturated silanes and related cured sealants
    Patent number: 9074117
    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: Grant
    Filed: March 7, 2014
    Date of Patent: July 7, 2015
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Raquel Keledjian, Renhe Lin, Chandra Rao, Bruce Virnelson
  • Sulfone-containing polythioethers, compositions thereof, and methods of synthesis
    Patent number: 9062139
    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: Grant
    Filed: March 15, 2013
    Date of Patent: June 23, 2015
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Chandra Rao, Juexiao Cai, Renhe Lin
  • Metal ligand-containing prepolymers, methods of synthesis, and compositions thereof
    Patent number: 9062162
    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: Grant
    Filed: October 29, 2013
    Date of Patent: June 23, 2015
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Chandra Rao, Jun Deng, Renhe Lin
  • Michael addition curing chemistries for sulfur-containing polymer compositions employing bis(sulfonyl)alkanols
    Patent number: 9056949
    Abstract: Michael addition curing chemistries in compositions comprising sulfur-containing polymers such as polythioethers and polysulfides are useful in aerospace sealant applications. Compositions employing Michael addition curing chemistries include sulfur-containing adducts comprising terminal Michael acceptor groups. In particular, the sulfur-containing adducts include terminal 1-(ethylenesulfonyl)-n-(vinylsulfonyl)alkanol groups.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: June 16, 2015
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Juexiao Cai, Lawrence G. Anderson, Marfi Ito, Renhe Lin
  • Coating/sealant systems, aqueous resinous dispersions, methods for making aqueous resinous dispersions, and methods of electrocoating
    Patent number: 9029437
    Abstract: A coating/sealant system that includes a coating and a sealant deposited over at least a portion of the coating, in which the coating includes a reaction product formed from reactants comprising a phosphated epoxy resin and a curing agent, and the sealant includes a sulfur-containing polymer.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: May 12, 2015
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Lawrence G. Anderson, Elizabeth A. Furar, Thor G. Lingenfelter, Michael A. Mayo, Robin M. Peffer, Joseph Theodore Valko
  • Temperature sensitive composite for photonic crystals
    Patent number: 9022648
    Abstract: A composite photonic crystal comprising an inverse opal structure defining an ordered array of voids with a filler composition received within the voids. A property of the filler composition changes in response to a stimulus, such as a temperature change, thereby changing the band gap of radiation that is reflected by the composite photonic crystal.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: May 5, 2015
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Noel R. Vanier, Eldon L. Decker, Stuart D. Hellring, Xiangling Xu, Sean Purdy, Gregory J. McCollum
  • MALEIMIDE-TERMINATED SULFUR-CONTAINING POLYMERS, COMPOSITIONS THEREOF, AND USES THEREOF
    Publication number: 20150119549
    Abstract: Sulfur-containing polymer adducts such as polythioethers, polysulfides, and sulfur-containing polyformals having terminal maleimide groups, and in particular, sulfur-containing polymers and sulfur containing adducts having terminal 1,1?-(methylenedi-4,1-phenylene)bismaleimide groups are disclosed. The adducts provide cured sealants having improved tensile strength and elongation and are useful as aerospace sealants.
    Type: Application
    Filed: October 29, 2013
    Publication date: April 30, 2015
    Applicant: PRC-DeSoto International, Inc.
    Inventors: Chandra Rao, Renhe Lin
  • 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