Patents Assigned to PRC
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Publication number: 20240150586Abstract: The present disclosure is directed to a coated metal substrate comprising a metal substrate; a coating applied over at least a portion of the metal substrate, wherein the coating comprises a film-forming binder; magnesium oxide; and an aluminum compound and/or iron compound; wherein the coating has a dry film thickness of at least 10 microns, and the magnesium oxide and the aluminum and/or iron compound are present in a weight ratio of 1:1 to 240:1. The present disclosure is also directed to a curable film film-forming coating composition a film-forming binder; magnesium oxide; and an aluminum compound and/or iron compound, wherein the magnesium oxide and the aluminum and/or iron compound are present in a weight ratio of 1:1 to 240:1. Also disclosed are methods of coating a substrate.Type: ApplicationFiled: March 2, 2022Publication date: May 9, 2024Applicant: PRC-Desoto International, Inc.Inventors: Michael Allen Mayo, Megan Elizabeth Ferlic, Justin Jonathan Martin, Scott Joseph Moravek, Francis Patrick Cassidy
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Publication number: 20240150587Abstract: The present invention is directed to a coated metal substrate comprising a metal substrate; and a coating applied over at least a portion of the metal substrate, wherein the coating comprises a film-forming binder; magnesium oxide; an aluminum compound and/or iron compound; and aluminum particles. The present invention also provides a curable film-forming coating composition comprising a film-forming binder; magnesium oxide; an aluminum and/or iron compound; and aluminum particles. Also disclosed are methods of coating a substrate.Type: ApplicationFiled: December 30, 2021Publication date: May 9, 2024Applicant: PRC-Desoto International, Inc.Inventors: Victor Franklin Georgic, Megan Elizabeth Ferlic, Justin Jonathan Martin
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Publication number: 20240132752Abstract: Compositions containing an azo free radical polymerization initiator, an organic peroxide free radical polymerization initiator, or a combination thereof are disclosed. The compositions are storage stable at temperatures less than 0° C. and cure at room temperature. The compositions are useful as sealants.Type: ApplicationFiled: February 14, 2022Publication date: April 25, 2024Applicant: PRC-Desoto International, Inc.Inventors: Jiancheng Liu, Jr., Nagarajan Srivatsan
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Patent number: 11945614Abstract: Sealant cartridge press fixtures are disclosed. The fixtures include a bracket comprising first and second side arms that receive a sealant cartridge therebetween. A transverse support bar connected to the first and second side arm is attached to a sealant filling nozzle. An air pressure cylinder mounted on the bracket includes a reciprocating piston rod that contacts and deforms a sidewall of the sealant cartridge at the beginning of a filling operation to allow trapped air to escape from the cartridge. An empty sealant cartridge having a slidable plunger therein is mounted at its front end on the sealant filling nozzle. The sealant is initially dispensed into the cartridge in the space between the front end of the cartridge and the plunger. While pressing and deforming the sidewall, it temporarily creates a gap between an interior surface of the sidewall and a plunger. The gap allows unwanted trapped air to escape from the sealant cartridge.Type: GrantFiled: May 7, 2020Date of Patent: April 2, 2024Assignee: PRC-DESOTO INTERNATIONAL, INC.Inventors: Paul Kuchinski, Ralph Roppo, Oscar Santillan
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Patent number: 11898054Abstract: Actinic radiation-curable compositions containing polythiols and urethane/urea-containing polyalkenyl prepolymers that can be used for aerospace coatings and sealants. The coatings can be applied to surfaces and rapidly cured.Type: GrantFiled: November 17, 2020Date of Patent: February 13, 2024Assignee: PRC-DESOTO INTERNATIONAL, INC.Inventors: Bruce Virnelson, Chandra Rao, Renhe Lin
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Publication number: 20240017286Abstract: Plungers (50) for use in sealant dispensing cartridges with collapsible sealant packaging (40) are disclosed. The plungers include anti-bypass retainers (60) to reduce or prevent unwanted passage of the flexible sealant packaging around the edges of the plungers during sealant dispensing operations.Type: ApplicationFiled: October 7, 2021Publication date: January 18, 2024Applicant: PRC-Desoto International, Inc.Inventors: Paul Kuchinski, Oscar Santillan
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Publication number: 20230407103Abstract: A coating comprising epoxy functional resin, corrosion resistant particles, and a multi-functional crosslinker are disclosed as are methods of using such a coating to coat at least a portion of a substrate and a substrate coated thereby.Type: ApplicationFiled: August 25, 2023Publication date: December 21, 2023Applicant: PRC-DeSoto International, Inc.Inventors: Didier Labouche, Marie-Noelle Maillet, Siamanto Abrami
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Patent number: 11807707Abstract: Polyurethane prepolymers having non-linear short chain diols and/or soft diisocyanates incorporated into the backbone are used to provide cured polyurethane coatings having a high hard segment content and low haze. The polyurethane prepolymers can also be used to improve the dispersion of filler in cured polyurethane compositions having a high filler loading. Cured coatings prepared from the two-part polyurethane systems meet the requirements for aerospace applications.Type: GrantFiled: October 12, 2021Date of Patent: November 7, 2023Assignee: PRC-DESOTO INTERNATIONAL, INC.Inventors: Razmik Boghossian, James Smith
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Patent number: 11760909Abstract: Low density aerospace compositions and sealants are disclosed. The low density compositions and sealants are characterized by a high volume percent loading of low density microcapsules.Type: GrantFiled: June 21, 2021Date of Patent: September 19, 2023Assignee: PRC-DESOTO INTERNATIONAL, INC.Inventor: Bruce Virnelson
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Patent number: 11739222Abstract: A coating comprising epoxy functional resin, corrosion resistant particles, and a multi-functional crosslinker are disclosed as are methods of using such a coating to coat at least a portion of a substrate and a substrate coated thereby.Type: GrantFiled: March 30, 2020Date of Patent: August 29, 2023Assignee: PRC-DESOTO INTERNATIONAL, INC.Inventors: Didier Labouche, Marie-Noelle Maillet, Siamanto Abrami
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Publication number: 20230242710Abstract: Compositions that are curable by free radical redox reactions are disclosed. Free radical curing reactions between polythiols and polyalkyenyls are initiated by the reaction of metal complexes and organic peroxides. The compositions are useful as sealants.Type: ApplicationFiled: April 4, 2023Publication date: August 3, 2023Applicant: PRC-DeSoto International, Inc.Inventors: JianCheng Liu, Srikant Pathak, Bruce Virnelson
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Patent number: 11712711Abstract: Sealant dispensing cartridge assemblies including radially expandable collets are disclosed. A plunger head assembly includes a ram head attached to a plunger rod. As the plunger rod is advanced into the sealant cartridge, the ram head presses against a rear side of a movable plunger against an opposing force created by a sealant contained in the cartridge on a front side of the plunger. As the plunger rod is further advanced, the collet contacts the ram head and radially expands against the inner sidewall of the plunger. The resulting radial force presses the sidewall of the plunger against the inner surface of the cartridge to thereby reduce or prevent unwanted leakage of the sealant around the plunger.Type: GrantFiled: September 19, 2019Date of Patent: August 1, 2023Assignee: PRC-DESOTO INTERNATIONAL, INC.Inventors: Paul Kuchinski, Oscar Santillan
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Publication number: 20230203699Abstract: Methods for treating a substrate are disclosed. The substrate is deoxidized and then immersed in an electrodepositable pretreatment composition comprising a lanthanide series element and/or a Group IIIB metal, an oxidizing agent, and a metal-complexing agent to deposit a coating from the electrodepositable pretreatment composition onto a surface of the substrate. Optionally, the electrodepositable pretreatment composition may comprise a surfactant. A coating from a spontaneously depositable pretreatment composition comprising a Group IIIB and/or Group IVB metal may be deposited on the substrate surface prior to electrodepositing a coating from the electrodepositable pretreatment composition. Following electrodeposition of the electrodepositable pretreatment composition, the substrate optionally may be contacted with a sealing composition comprising phosphate and a Group IIIB and/or IVB metal. Substrates treated according to the methods also are disclosed.Type: ApplicationFiled: February 14, 2023Publication date: June 29, 2023Applicant: PRC-DeSoto International, Inc.Inventors: Gordon L. Post, Michael A. Mayo, Edward F. Rakiewicz, Michael J. Pawlik
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Publication number: 20230173523Abstract: A mask and air pressure control system for use in coating deposition is disclosed. A method is provided for controlling liquid coating droplets during deposition onto a substrate by directing atomized liquid coating droplets in a flow path toward the substrate, and applying a vacuum or pressurized air from an air pressure control system to at least a portion of the atomized liquid coating droplets in the flow path. The air pressure control mask comprises an air pressure control fixture structured and arranged for connection to a source of vacuum or pressurized air, and a nozzle opening structured and arranged to at least partially surround a flow path of the liquid coating droplets and to selectively allow at least a portion of the liquid coating droplets to pass through the air pressure control mask, wherein the vacuum or pressurized air prevents at least a portion of oversprayed liquid coating droplets from being deposited on the substrate outside an intended edge of the coating.Type: ApplicationFiled: May 7, 2021Publication date: June 8, 2023Applicant: PRC-Desoto International, Inc.Inventors: Yong Han Yeong, Mehran Arbab, Adam Colbourne, Jonny Waite, Henry Rolt, Simon Kew, Alan Hudd
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Publication number: 20230173442Abstract: A mixing impeller (10) for mixing a sealant inside a cartridge (1) is disclosed. The mixing impeller (10) comprises a central hub (11) and at least two mixing arms (20) extending radially outward from the central hub (11). Each of the mixing arms (20) may include a leading edge (24), a trailing edge (26), and a wiping edge (28) extending circumferentially between a leading tip (25) of the leading edge (24) and a trailing edge transition (27) of the trailing edge (26). The wiping edge (28) may have an arc length defining a wiping edge (28) angle, the leading tip (25) may be circumferentially offset in a direction of rotation of the mixing impeller (10) defining a leading edge (24) angle to provide a forward swept configuration, and the wiping edge (28) angle may be greater than the leading edge (24) angle. A sealant cartridge (1) and mixing impeller (10) assembly is also disclosed.Type: ApplicationFiled: April 5, 2021Publication date: June 8, 2023Applicant: PRC-Desoto International, Inc.Inventors: Paul Kuchinski, Goldi Singh, Oscar Santillan
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Patent number: 11660176Abstract: The present disclosure relates to a universal platform for accurately injuring animal under multi-condition and multi-simulation-environment, the platform including a fragment assembly convenient for the animal to be injured by means of a fragment, a shock wave assembly convenient for the animal to be injured by means of shock waves, a low-temperature assembly for providing a low-temperature environment for an injured animal, a low-pressure assembly for providing a low-pressure environment for the injured animal, a burning assembly used for injuring the animal by means of burning, a seawater soaking assembly used for soaking the injured animal in seawater, a photographing assembly used for high-speed photography, and a binding assembly used for fixing the animal during fragment injury, shock wave injury, burning injury and seawater soaking.Type: GrantFiled: February 27, 2020Date of Patent: May 30, 2023Assignee: ARMY MEDICAL UNIVERSITY, PEOPLE'S LIBERATION ARMY, PRCInventors: Zhaowen Zong, Wenqiong Du, Renqing Jiang, Lin Zhang, Xin Zhong, Yijun Jia, Zhao Ye, Xiaolin Zhou
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Patent number: 11655340Abstract: Compositions that are curable by free radical redox reactions are disclosed. Free radical curing reactions between polythiols and polyalkyenyls are initiated by the reaction of metal complexes and organic peroxides. The compositions are useful as sealants.Type: GrantFiled: June 8, 2018Date of Patent: May 23, 2023Assignee: PRC-DESOTO INTERNATIONAL, INC.Inventors: JianCheng Liu, Srikant Pathak, Bruce Virnelson
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Patent number: 11624007Abstract: Photocurable adhesion-promoting compositions containing organic titanates and/or organic zirconates and partially reacted alkoxysilanes and the use of the photocurable adhesion-promoting compositions to provide adhesion between metal substrates and an overlying radiation-cured sealant are disclosed.Type: GrantFiled: January 29, 2020Date of Patent: April 11, 2023Assignee: PRC-DESOTO INTERNATIONAL, INC.Inventors: JianCheng Liu, Chu Ran Zheng, Millie Chang, Nagarajan Srivatsan
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Publication number: 20230105535Abstract: Polythioether prepolymers that have a low nucleation temperature are disclosed. The polythioether prepolymers are stable at low temperature storage conditions for an extended period of time. Compositions prepared using the low nucleation temperature polythioether prepolymers are useful as sealants.Type: ApplicationFiled: December 17, 2020Publication date: April 6, 2023Applicant: PRC-Desoto International, Inc.Inventor: Chandra B. Rao
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Patent number: 11608458Abstract: Adhesion-promoting compositions containing organic titanates and/or organic zirconates and the use of the adhesion-promoting compositions to provide adhesion-promoting layers to enhance adhesion between metal substrates and an overlying free radical-polymerized sealant are disclosed.Type: GrantFiled: December 19, 2019Date of Patent: March 21, 2023Assignee: PRC-DESOTO INTERNATIONAL, INC.Inventors: JianCheng Liu, Nagarajan Srivatsan