Patents by Inventor Daniel A. De Schryver
Daniel A. De Schryver 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: 11891754Abstract: This invention provides aqueous flame retardant dispersions comprising water, a brominated flame retardant containing aromatically-bound bromine, at least one dispersant, at least one wetting agent, and at least one thickener. The brominated flame retardant has an average particle size of about 20 ?m or less. The flame retardant dispersion contains about 50 wt % or more of brominated polymeric flame retardant, based on the total weight of the dispersion. Also provided are coating compositions, processes for forming flame retardant dispersions, processes for forming coating compositions, and processes for applying the coating compositions to textile substrates.Type: GrantFiled: March 12, 2019Date of Patent: February 6, 2024Assignee: Albemarle CorporationInventors: Rajeev S. Mathur, Jon Shannon Reed, Daniel A. De Schryver, John Randall Chaya
-
Publication number: 20230272185Abstract: This invention provides a flame retardant additive composition which comprises at least one glow suppressant and at least one brominated flame retardant. The glow suppressant is about 0.5 wt % or more of the flame retardant additive composition, based on the total weight of the flame retardant additive composition. The brominated flame retardant contains aromatically-bound bromine and is selected from a) a brominated anionic styrenic polymer having a number average molecular weight of about 750 to about 7500, and/or a bromine content of about 60 wt % to about 77 wt %, b) a brominated anionic chain transfer vinyl aromatic polymer which contains about 70 wt % or more bromine, or a mixture of any two or more of these. Also provided are flame retarded polyolefin compositions that contain at least one glow suppressant and a brominated flame retardant.Type: ApplicationFiled: August 5, 2021Publication date: August 31, 2023Inventors: Jonathan P. McCarney, Daniel A. De Schryver, Rajeev S. Mathur
-
Publication number: 20210131027Abstract: This invention provides aqueous flame retardant dispersions comprising water, a brominated flame retardant containing aromatically-bound bromine, at least one dispersant, at least one wetting agent, and at least one thickener. The brominated flame retardant has an average particle size of about 20 ?m or less. The flame retardant dispersion contains about 50 wt % or more of brominated polymeric flame retardant, based on the total weight of the dispersion. Also provided are coating compositions, processes for forming flame retardant dispersions, processes for forming coating compositions, and processes for applying the coating compositions to textile substrates.Type: ApplicationFiled: March 12, 2019Publication date: May 6, 2021Inventors: Rajeev S. Mathur, Jon Shannon Reed, Daniel A. De Schryver, John Randall Chaya
-
Publication number: 20150337125Abstract: This invention relates to useful brominated flame retardants and the use of the brominated materials as flame retardants in flammable thermoplastic and thermosetting materials.Type: ApplicationFiled: May 23, 2014Publication date: November 26, 2015Applicant: Albemarle CorporationInventors: Jonathan McCarney, Jon Shannon Reed, Daniel De Schryver, Govindarajulu Kumar
-
Patent number: 7666943Abstract: A fiber or filament which is formed from ingredients comprising (a) at least one fiber-forming thermoplastic polymer, and (b) at least one polybrominated anionic styrenic polymer is provided. The polybrominated anionic styrenic polymer has a bromine content of at least about 50 wt %. When the fiber-forming thermoplastic polymer is a polyester, the polybrominated anionic styrenic polymer is present in a flame resistant or flame retardant amount. When the fiber-forming thermoplastic polymer is a polyamide, the polybrominated anionic styrenic polymer is at least about 2 wt % of the fiber or filament. When the fiber-forming thermoplastic polymer is a polyolefin, at least one synergist is present and the polybrominated anionic styrenic polymer is no more than about 15 wt % of the fiber or filament.Type: GrantFiled: July 20, 2006Date of Patent: February 23, 2010Assignee: Albemarle CorporationInventors: Jon Shannon Reed, Daniel A. De Schryver
-
Patent number: 7666944Abstract: A fiber or filament which is formed from ingredients comprising (a) at least one fiber-forming thermoplastic polymer and (b) at least one polybrominated anionic styrenic polymer is provided. The polybrominated anionic styrenic polymer has a bromine content of at least about 50 wt %, and a GPC weight average molecular weight in the range of about 5000 to about 40,000, or a GPC weight average molecular weight of at least about 600,000. When the fiber-forming thermoplastic polymer is a polyester, the polybrominated anionic styrenic polymer is present in a flame resistant or flame retardant amount. When the fiber-forming thermoplastic polymer is a polyamide, the polybrominated anionic styrenic polymer is at least about 2 wt % of the fiber or filament. When the fiber-forming thermoplastic polymer is a polyolefin, at least one synergist is present and the polybrominated anionic styrenic polymer is no more than about 15 wt % of the fiber or filament.Type: GrantFiled: October 30, 2007Date of Patent: February 23, 2010Assignee: Albemarle CorporationInventors: Daniel A. De Schryver, Jon Shannon Reed, Douglas W. Luther, Samuel G. Thomas, Jr., Arthur G. Mack
-
Publication number: 20080139752Abstract: A fiber or filament which is formed from ingredients comprising (a) at least one fiber-forming thermoplastic polymer and (b) at least one polybrominated anionic styrenic polymer is provided. The polybrominated anionic styrenic polymer has a bromine content of at least about 50 wt %, and a GPC weight average molecular weight in the range of about 5000 to about 40,000, or a GPC weight average molecular weight of at least about 600,000. When the fiber-forming thermoplastic polymer is a polyester, the polybrominated anionic styrenic polymer is present in a flame resistant or flame retardant amount. When the fiber-forming thermoplastic polymer is a polyamide, the polybrominated anionic styrenic polymer is at least about 2 wt % of the fiber or filament. When the fiber-forming thermoplastic polymer is a polyolefin, at least one synergist is present and the polybrominated anionic styrenic polymer is no more than about 15 wt % of the fiber or filament.Type: ApplicationFiled: October 30, 2007Publication date: June 12, 2008Applicant: Albemarle CorporationInventors: Daniel A. De Schryver, Jon Shannon Reed, Douglas W. Luther, Samuel G. Thomas, Arthur G. Mack
-
Publication number: 20070021562Abstract: A fiber or filament which is formed from ingredients comprising (a) at least one fiber-forming thermoplastic polymer, and (b) at least one polybrominated anionic styrenic polymer is provided. The polybrominated anionic styrenic polymer has a bromine content of at least about 50 wt %. When the fiber-forming thermoplastic polymer is a polyester, the polybrominated anionic styrenic polymer is present in a flame resistant or flame retardant amount. When the fiber-forming thermoplastic polymer is a polyamide, the polybrominated anionic styrenic polymer is at least about 2 wt % of the fiber or filament. When the fiber-forming thermoplastic polymer is a polyolefin, at least one synergist is present and the polybrominated anionic styrenic polymer is no more than about 15 wt % of the fiber or filament.Type: ApplicationFiled: July 20, 2006Publication date: January 25, 2007Inventors: Jon Reed, Daniel De Schryver
-
Publication number: 20050159552Abstract: A fiber or filament which is formed from ingredients comprising (a) at least one fiber-forming thermoplastic polymer, and (b) at least one polybrominated anionic styrenic polymer is provided. The polybrominated anionic styrenic polymer has a bromine content of at least about 50 wt %. Processes for producing such fibers or filaments are also provided.Type: ApplicationFiled: January 21, 2004Publication date: July 21, 2005Inventors: Jon Reed, Daniel De Schryver
-
Publication number: 20040072929Abstract: A flame retardant molding composition formed from components comprisingType: ApplicationFiled: June 27, 2002Publication date: April 15, 2004Inventor: Daniel A. De Schryver
-
Publication number: 20030195286Abstract: Flame retardant additive compositions having enhanced thermal stability are described. They comprise a blend formed from (A) at least one organic bromine flame retardant selected from (i) a flame retardant compound having a plurality of bromine atoms directly bonded to a cycloaliphatic ring, (ii) the bis(2,3-dibromopropyl ether) of tetrabromobisphenol-A, and (iii) the bis(2,3-dibromopropyl ether) of tetrabromobisphenol-S, (B) an alkyltin mercaptoalkanoate, and (C) a zeolite adjuvant. The proportions are 0.01-0.08 part by weight of (B) per part by weight of (A), and 0.01-0.35 part by weight of (C) per part by weight of (A). Thermoplastic polymer compositions in which these additive compositions are employed possess enhanced properties.Type: ApplicationFiled: April 15, 2002Publication date: October 16, 2003Inventor: Daniel A. De Schryver
-
Patent number: 6617379Abstract: N,N′-piperazinebis(neopentylglycol)phosphoramidate is used in combination with at least one co-additive which is (i) melamine, (ii) one or more melamine compounds or derivatives, or (iii) both of (i) and (ii) to provide effective flame retardancy in thermoplastic polymers. With polymers that tend to release trace amounts of acid under thermal processing conditions, a hydrotalcite is preferably included in the composition. In acid-sensitive polymers such as polyesters, the N,N′-piperazinebis(neopentylglycol)phosphoramidate should be free or essentially free of acid species as determinable by use of nmr, mass spec, and/or HPLC.Type: GrantFiled: December 4, 2001Date of Patent: September 9, 2003Assignee: Albemarle CorporationInventors: Anteneh Z. Worku, Daniel A. De Schryver, Susan D. Landry, Arthur G. Mack
-
Publication number: 20030109608Abstract: N,N′-piperazinebis(neopentylglycol)phosphoramidate is used in combination with at least one co-additive which is (i) melamine, (ii) one or more melamine compounds or derivatives, or (iii) both of (i) and (ii) to provide effective flame retardancy in thermoplastic polymers. With polymers that tend to release trace amounts of acid under thermal processing conditions, a hydrotalcite is preferably included in the composition. In acid-sensitive polymers such as polyesters, the N,N′-piperazinebis(neopentylglycol)phosphoramidate should be free or essentially free of acid species as determinable by use of nmr, mass spec, and/or HPLC.Type: ApplicationFiled: December 4, 2001Publication date: June 12, 2003Inventors: Anteneh Z. Worku, Daniel A. De Schryver, Susan D. Landry, Arthur G. Mack
-
Publication number: 20020086927Abstract: A flame retardant molding composition which comprises a blend formed from at least the following components: (A) a thermoplastic polyamide or thermoplastic polyester polymer (B) at least one organic halogen-containing flame retardant, (C) a zinc borate, a mixed oxide of zinc and boron, or zinc sulfide, or a mixture of any two or more of the foregoing; and (D) an olefin-based polymer. The composition produces molded articles which exhibit increased comparative tracking index ratings.Type: ApplicationFiled: January 23, 2002Publication date: July 4, 2002Inventors: Daniel A. De Schryver, Dominique Fasbinder
-
Patent number: 6235831Abstract: A polyalkylene terephthalate polymer, such as polyethylene terephthalate, polybutylene terephthalate, blends or copolymers thereof, and analogous polyester-type engineering thermoplastics, with which has been blended a flame retardant amount of brominated styrenic polymer, such as brominated polystyrene, that, prior to blending, is characterized by (a) containing less than 700 ppm Cl and having a TGA temperature for 1% weight loss of 340° C. or higher; and/or (b) having an actual Mw which is within about 20%, and preferably within about 10%, of its calculated theoretical Mw, the theoretical Mw being based upon the actual bromine content of the brominated styrenic polymer and the Mw of the styrenic polymer reactant used to produce the brominated styrenic polymer; and/or (c) being essentially free of each of the following impurities: (1) ethylene dichloride, (2) bromodichloroethane, (3) dibromochloroethane, (4) dibromodichloroethane, and (5) tribrormochloroethane.Type: GrantFiled: September 10, 1998Date of Patent: May 22, 2001Assignee: Albemarle CorporationInventors: Jon S. Reed, Susan D. Landry, Daniel A. De Schryver, Billie B. Dadgar, Donald E. Balhoff, Charles H. Kolich, Meng-Sheng Ao, Homer C. Lin
-
Patent number: 5674972Abstract: This invention relates to polyamide-based formulations flame retarded with synergized brominated flame retardants and having good thermal stability.Type: GrantFiled: July 27, 1995Date of Patent: October 7, 1997Assignee: Albemarle CorporationInventors: Luc Van Wabeeke, Daniel De Schryver