Patents by Inventor Govindarajulu Kumar
Govindarajulu Kumar 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).
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Patent number: 9914830Abstract: This invention relates flame retardant compositions containing low molecular weight brominated anionic, chain transfer, vinyl aromatic polymers, hereinafter “ACTVAP”. The compositions can accommodate high bromine content while still exhibiting a low thermally labile bromine content. The compositions have glass transition temperatures, Tg, that are predictive of acceptable melt flows and heat distortion temperatures (HDT) in HIPS and ABS based formulations substrates. The compositions, are suitable flame retardant candidates for use in thermoplastic formulations, e.g. polystyrene and ABS formulations.Type: GrantFiled: February 27, 2015Date of Patent: March 13, 2018Assignee: ALBEMARLE CORPORATIONInventors: William J. Layman, Jr., Arthur G. Mack, Charles H. Kolich, Govindarajulu Kumar
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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
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Publication number: 20150175797Abstract: This invention relates flame retardant compositions containing low molecular weight brominated anionic, chain transfer, vinyl aromatic polymers, hereinafter “ACTVAP”. The compositions can accommodate high bromine content while still exhibiting a low thermally labile bromine content. The compositions have glass transition temperatures, Tg, that are predictive of acceptable melt flows and heat distortion temperatures (HDT) in HIPS and ABS based formulations substrates. The compositions, are suitable flame retardant candidates for use in thermoplastic formulations, e.g. polystyrene and ABS formulations.Type: ApplicationFiled: February 27, 2015Publication date: June 25, 2015Inventors: William J. Layman, JR., Arthur G. Mack, Charles H. Kolich, Govindarajulu Kumar
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Patent number: 9018298Abstract: The present invention relates to the use of pelletized flame retardants and flame retardant compositions in the formation of flame retarded formulations, the resulting flame retarded formulations, and molded and/or extruded articles made from such flame retarded formulations.Type: GrantFiled: July 31, 2008Date of Patent: April 28, 2015Assignee: Albemarle CorporationInventors: Vijay M. Kotian, Govindarajulu Kumar, Timothy John St. Romain
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Patent number: 8993684Abstract: This invention relates flame retardant compositions containing low molecular weight brominated anionic, chain transfer, vinyl aromatic polymers, hereinafter “ACTVAP”. The compositions can accommodate high bromine content while still exhibiting a low thermally labile bromine content. The compositions have glass transition temperatures, Tg, that are predictive of acceptable melt flows and heat distortion temperatures (HDT) in HIPS and ABS based formulations substrates. The compositions, are suitable flame retardant candidates for use in thermoplastic formulations, e.g. polystyrene and ABS formulations.Type: GrantFiled: June 23, 2008Date of Patent: March 31, 2015Assignee: Albemarle CorporationInventors: William J. Layman, Jr., Arthur G. Mack, Charles H. Kolich, Govindarajulu Kumar
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Patent number: 8933159Abstract: Described are a particular group of novel aromatic hydrocarbon telomers that, on bromination, result in the formation of novel flame retardants having a uniquely beneficial combination of properties. The resultant flame retardants and uses thereof are also described. The disclosure includes descriptions of methods for preparing both the aromatic hydrocarbon telomers and the brominated flame retardant polymers.Type: GrantFiled: November 30, 2009Date of Patent: January 13, 2015Assignee: Albemarle CorporationInventors: William J. Layman, Jr., Charles H. Kolich, Arthur G. Mack, Jonathan P. McCarney, Govindarajulu Kumar, Jorge Morice, Zhongxin Ge, Bo Liu, Douglas W. Luther, Kimberly M. White, Bruce C. Berris, Junzuo Wang
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Patent number: 8796388Abstract: This invention relates flame retardant compositions containing low molecular weight brominated anionic, chain transfer, vinyl aromatic polymers, hereinafter “ACTVAP”. The compositions can accommodate high bromine content while still exhibiting a low thermally labile bromine content. The compositions have glass transition temperatures, Tg, that are predictive of acceptable melt flows and heat distortion temperatures (HDT) in HIPS and ABS based formulations substrates. The compositions, are suitable flame retardant candidates for use in thermoplastic formulations, e.g. polystyrene and ABS formulations.Type: GrantFiled: June 6, 2008Date of Patent: August 5, 2014Assignee: Albemarle CorporationInventors: William J. Layman, Jr., Arthur G. Mack, Charles H. Kolich, Govindarajulu Kumar
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Patent number: 8753554Abstract: Novel polymer compositions of specified formula are converted into pellets of this invention by process technology provided by this invention. By forming a binder free melt of a polymer of such polymer compositions, and converting the melt into pellets as described here-in, pellets can be formed produce during production, handling, and use, no more than acceptably small amounts of “fines” or air-entrainable dusts.Type: GrantFiled: April 29, 2010Date of Patent: June 17, 2014Assignee: Albemarle CorporationInventors: Govindarajulu Kumar, William J. Layman, Jr., Bo Liu, Douglas W. Luther, Arthur G. Mack
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Patent number: 8476373Abstract: New branched or star-branched styrene polymeric, telomeric, and monomeric product distributions, their preparation, their use as raw materials for bromination to produce flame retardants, the flame retardants themselves, and their use as flame retardants in various polymeric substrates are described.Type: GrantFiled: November 30, 2009Date of Patent: July 2, 2013Assignee: Albemarle CorporationInventors: William J. Layman, Jr., Charles H. Kolich, Arthur G. Mack, Jonathan P. McCarney, Govindarajulu Kumar, Jorge Morice, Zhongxin Ge, Bo Liu, Douglas W. Luther, Kimberly M. White, Junzuo Wang, Ravindra R. Joshi, Hoover B. Chew
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Publication number: 20120041115Abstract: Novel polymer compositions of specified formula are converted into pellets of this invention by process technology provided by this invention. By forming a melt blend of a polymer of such polymer compositions together with a modest amount of at least one thermoplastic polymer of at least one monoolefmic monomer having 2-12 carbon atoms per molecule, and converting the melt blend into pellets as described herein, pellets can be formed produce during production, handling, and use, almost no “fines” or air-entrainable dusts. The pellets have an array of additional superior properties and characteristics.Type: ApplicationFiled: April 29, 2010Publication date: February 16, 2012Applicant: ALBEMARLE CORPORATIONInventors: Govindarajulu Kumar, Arthur G. Mack, Bo Liu, William J. Layman, Jr., Douglas W. Luther
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Publication number: 20120035401Abstract: Novel polymer compositions of specified formula are converted into pellets of this invention by process technology provided by this invention. By forming a binder free melt of a polymer of such polymer compositions, and converting the melt into pellets as described here-in, pellets can be formed produce during production, handling, and use, no more than acceptably small amounts of “fines” or air-entrainable dusts.Type: ApplicationFiled: April 29, 2010Publication date: February 9, 2012Applicant: ALBEMARLE CORPORATIONInventors: Govindarajulu Kumar, William J. Layman, JR., Bo Liu, Douglas W. Luther, Arthur G. Mack
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Publication number: 20110224353Abstract: Described are a particular group of novel aromatic hydrocarbon telomers that, on bromination, result in the formation of novel flame retardants having a uniquely beneficial combination of properties. The resultant flame retardants and uses thereof are also described. The disclosure includes descriptions of methods for preparing both the aromatic hydrocarbon telomers and the brominated flame retardant polymers.Type: ApplicationFiled: November 30, 2009Publication date: September 15, 2011Applicant: ALBEMARLE CORPORATIONInventors: William J. Layman Jr., Charles H. Kolich, Arthur G. Mack, Jonathan P. McCarney, Govindarajulu Kumar, Junzuo Wang, Jorge Morice, Zhongxin Ge, Bo Liu, Douglas W. Luther, Kimberly M. White, Bruce C. Berris
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Publication number: 20110224320Abstract: New branched or star-branched styrene polymeric, telomeric, and monomeric product distributions, their preparation, their use as raw materials for bromination to produce flame retardants, the flame retardants themselves, and their use as flame retardants in various polymeric substrates are described.Type: ApplicationFiled: November 30, 2009Publication date: September 15, 2011Applicant: ALBEMARLE CORPORATIONInventors: William J. Layman, JR., Charles H. Kolich, Arthur G. Mack, Jonathan P. McCarney, Govindarajulu Kumar, Junzuo Wang, Jorge Morice, Zhongxin Ge, Bo Liu, Ravindra R. Joshi, Hoover B. Chew, Douglas W. Luther, Kimberly M. White
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Publication number: 20110178226Abstract: This invention relates flame retardant compositions containing low molecular weight brominated anionic, chain transfer, vinyl aromatic polymers, hereinafter “ACTVAP”. The compositions can accommodate high bromine content while still exhibiting a low thermally labile bromine content. The compositions have glass transition temperatures, Tg, that are predictive of acceptable melt flows and heat distortion temperatures (HDT) in HIPS and ABS based formulations substrates. The compositions, are suitable flame retardant candidates for use in thermoplastic formulations, e.g. polystyrene and ABS formulations.Type: ApplicationFiled: June 6, 2008Publication date: July 21, 2011Applicant: ALBEMARLE CORPORATIONInventors: William J. Layman, Arthur G. Mack, Charles H. Kolich, Govindarajulu Kumar
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Publication number: 20110130520Abstract: This invention relates flame retardant compositions containing low molecular weight brominated anionic, chain transfer, vinyl aromatic polymers, hereinafter “ACTVAP”. The compositions can accommodate high bromine content while still exhibiting a low thermally labile bromine content. The compositions have glass transition temperatures, Tg, that are predictive of acceptable melt flows and heat distortion temperatures (HDT) in HIPS and ABS based formulations substrates. The compositions, are suitable flame retardant candidates for use in thermoplastic formulations, e.g. polystyrene and ABS formulations.Type: ApplicationFiled: June 23, 2008Publication date: June 2, 2011Applicant: ALBEMARLE CORPORATIONInventors: William J. Layman, JR., Arthur G. Mack, Charles H. Kolich, Govindarajulu Kumar
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Publication number: 20100190896Abstract: The present invention relates to the use of pelletized flame retardants and flame retardant compositions in the formation of flame retarded formulations, the resulting flame retarded formulations, and molded and/or extruded articles made from such flame retarded formulations.Type: ApplicationFiled: July 31, 2008Publication date: July 29, 2010Applicant: Albemarle CorporationInventors: Vijay M. Kotian, Govindarajulu Kumar, Timothy John St. Romain
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Publication number: 20080200573Abstract: Styrenic polymer foams, especially expanded and/or extruded styrenic polymer foams, are flame retarded by use of one or more flame retardant additives.Type: ApplicationFiled: August 1, 2006Publication date: August 21, 2008Applicant: ALBEMARLE CORPORATIONInventors: Kimberly A. Maxwell, Saadat Hussain, Dominique Fasbinder, Danielle F. Goossens, Govindarajulu Kumar, Arthur G. Mack, Paul F. Ranken
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Patent number: 6414060Abstract: Thermoplastic polycarbonate-ABS resin is rendered flame retardant by blending with the resin an O,O-diaryl-N-arylphosphoramidate, an arylene-N,N′-bis(O,O-diarylphosphoramidate) in which the nitrogen atoms are in the 1,3 or 1,4 positions on an arylene ring, or an N,N′-piperazinediylbis(O,O-diarylphosphoramidate). These flame retardants are halogen-free. They provide molded objects having high heat distortion temperatures, and high softening temperatures. Flame retardants of these types have been found to be thermally stable at temperatures of at least 260° C., and they did not discolor the polymer composition during exposure to molding temperatures.Type: GrantFiled: July 7, 1999Date of Patent: July 2, 2002Assignee: Albemarle CorporationInventors: John M. McEuen, Mark W. Beltz, Govindarajulu Kumar
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Patent number: 5811470Abstract: Compositions and methods are described wherein a styrenic polymer is rendered flame retardant by incorporation therein before, during or after its formation, a combination of (a) at least one organic phosphorus additive that (i) is halogen-free, and (ii) is composed solely of carbon, hydrogen, and phosphorus, and optionally and preferably one or more of the elements nitrogen, oxygen, and sulfur; and (b) elemental sulfur; in proportions such that (i) the sulfur content from b) is less than 2 percent by weight of the weight of the styrenic polymer plus the weight of a) and b), and (ii) the styrenic polymer plus ingredients a) and b) can provide test specimens which exhibit an LOI of at least 24 if tested in accordance with ASTM Standard Test Method D 2863-87.Type: GrantFiled: August 27, 1997Date of Patent: September 22, 1998Assignee: Albemarle CorporationInventors: John C. Prindle, Jr., Christopher J. Nalepa, Govindarajulu Kumar
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Patent number: 5350875Abstract: Compounds varying from liquids to solids can be prepared via a reaction in which at least one Michael donor is reacted with one or more Michael acceptors in the presence of an undissolved basic compound as the catalyst.Type: GrantFiled: November 23, 1993Date of Patent: September 27, 1994Assignee: Albemarle CorporationInventors: Govindarajulu Kumar, Mahmood Sabahi