Patents by Inventor James D. Siebecker
James D. Siebecker 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: 9388340Abstract: A hydroxyphenyl or alkoxyphenyl phosphine oxide composition comprising (i) a first mixture of mono-(hydroxyphenyl) or (alkoxyphenyl)phosphine oxide isomers, (ii) a second mixture of bis-(hydroxyaryl) or (alkoxyphenyl)phosphine oxide isomers, (iii) a third mixture of tris-(hydroxyaryl) or (alkoxyphenyl)phosphine oxide isomers, and optionally iv) a minority amount of non-hydroxy or non-alkoxy tris-phenyl phosphine oxides is provided. Also provided are epoxy resins compositions with excellent flame retardancy and physical properties, which resins comprise the phosphine oxide composition.Type: GrantFiled: February 4, 2013Date of Patent: July 12, 2016Assignee: Chemtura CorporationInventors: Larry D Timberlake, Mark V. Hanson, James D Siebecker
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Patent number: 8865862Abstract: A hydroxyphenyl or alkoxyphenyl phosphine oxide composition comprising (i) a first mixture of mono-(hydroxyphenyl) or (alkoxyphenyl) phosphine oxide isomers, (ii) a second mixture of bis-(hydroxyaryl) or (alkoxyphenyl) phosphine oxide isomers, (iii) a third mixture of tris-(hydroxyaryl) or (alkoxyphenyl) phosphine oxide isomers, and optionally iv) a minority amount of non-hydroxy or non-alkoxy tris-phenyl phosphine oxides is provided. Also provided are epoxy resins compositions with excellent flame retardancy and physical properties, which resins comprise the phosphine oxide composition.Type: GrantFiled: February 4, 2013Date of Patent: October 21, 2014Assignee: Chemtura CorporationInventors: Larry D. Timberlake, Mark V. Hanson, James D. Siebecker
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Patent number: 8362127Abstract: A halogenated non-polymeric phenyl ether flame retardant is described having the general formula (I): wherein each X is independently Cl or Br, n is an integer of 1 or 2, and each p is independently an integer of 1 to 4, provided that, when each X is Cl, the total amount halogen in the ether is from about 50 to about 65 wt % and when each X is Br, the total amount halogen in the ether is from at least 70 wt % to about 79 wt % and wherein from about 30% to about 80%, for example from about 35% to about 75% of the halogenated ethers are fully halogenated the remainder being partially halogenated. The present flame retardant provides superior mechanical properties when incorporated into a polymer than similar flame retardants which contain a higher amount of fully halogenated species.Type: GrantFiled: September 29, 2011Date of Patent: January 29, 2013Assignee: Chemtura CorporationInventors: Larry D. Timberlake, James D. Siebecker, Subramaniam Narayan
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Patent number: 8357738Abstract: A flame retardant blend comprises at least first and second halogenated non-polymeric phenyl ethers having the general formula (I): wherein each X is independently Cl or Br, each m is independently an integer of 1 to 5, each p is independently an integer of 1 to 4, n is an integer of 1 to 5 and wherein the values of n for the first and second ethers are different.Type: GrantFiled: November 24, 2009Date of Patent: January 22, 2013Assignee: Chemtura CorporationInventors: Larry D. Timberlake, James D. Siebecker
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Patent number: 8158038Abstract: A halogenated aryl ether oligomer is formed by halogenation of an aryl ether oligomer and is useful as a flame retardant for flammable macromolecular materials. Typically, the halogenated aryl ether oligomer comprises the following repeating monomeric units: wherein R is hydrogen or alkyl, especially C1 to C4 alkyl, Hal is halogen, m is at least 1, n is 0 to 3 and x is at least 2.Type: GrantFiled: October 22, 2010Date of Patent: April 17, 2012Assignee: Chemtura CorporationInventors: Larry D. Timberlake, James D. Siebecker
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Publication number: 20120065297Abstract: A halogenated non-polymeric phenyl ether flame retardant is described having the general formula (I): wherein each X is independently Cl or Br, n is an integer of 1 or 2, and each p is independently an integer of 1 to 4, provided that, when each X is Cl, the total amount halogen in the ether is from about 50 to about 65 wt % and when each X is Br, the total amount halogen in the ether is from at least 70 wt % to about 79 wt % and wherein from about 30% to about 80%, for example from about 35% to about 75% of the halogenated ethers are fully halogenated the remainder being partially halogenated. The present flame retardant provides superior mechanical properties when incorporated into a polymer than similar flame retardants which contain a higher amount of fully halogenated species.Type: ApplicationFiled: September 29, 2011Publication date: March 15, 2012Applicant: Chemtura CorporationInventors: Larry D. Timberlake, James D. Siebecker, Subramaniam Narayan
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Publication number: 20110054086Abstract: A flame retardant thermoplastic polymer composition, having a major amount of a thermoplastic polymer and a flame retardant additive comprising a phosphinic acid salt, a zinc salt and a melamine salt, in an amount effective to provide flame retardance to said polymer, and a low Tg glass containing phosphorous, tin and fluorine, in an amount sufficient to reduce the shear viscosity of the composition to less than about 10 Pa·s at a shear rate of about 10,000/sec and a temperature of 280° C., as measured by ASTM D-3835 is provided. Also provided is a flame retardant composition comprising phosphinic acid salt, a zinc salt, a melamine salt and the low Tg glass and a process for forming the flame retardant thermoplastic polymer composition by incorporating the flame retardant composition into the molten polymer.Type: ApplicationFiled: August 30, 2010Publication date: March 3, 2011Applicant: The University of Southern Mississippi Research FoundationInventors: JAMES D. SIEBECKER, WILLIAM R. FIELDING, JOSHUA U. OTAIGBE
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Publication number: 20110040003Abstract: A halogenated aryl ether oligomer is formed by halogenation of an aryl ether oligomer and is useful as a flame retardant for flammable macromolecular materials. Typically, the halogenated aryl ether oligomer comprises the following repeating monomeric units: wherein R is hydrogen or alkyl, especially C1 to C4 alkyl, Hal is halogen, m is at least 1, n is 0 to 3 and x is at least 2.Type: ApplicationFiled: October 22, 2010Publication date: February 17, 2011Inventors: LARRY D. TIMBERLAKE, James D. Siebecker
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Patent number: 7820764Abstract: A controlled molecular weight polymer of styrene is provided having bromine substituted thereon. Control of molecular weight is achieved by the use of alpha-methyl styrene dimer as a chain transfer agent. The brominated polymer of styrene is useful as a flame retardant, particularly for polyamides giving improved properties including color retention after molding.Type: GrantFiled: January 20, 2010Date of Patent: October 26, 2010Assignee: Chemtura CorporationInventors: Wayne Meyer, Jennifer L. Bohan, Larry D. Timberlake, James D. Siebecker
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Publication number: 20100160516Abstract: A flame retardant blend comprises at least first and second halogenated non-polymeric phenyl ethers having the general formula (I): wherein each X is independently Cl or Br, each m is independently an integer of 1 to 5, each p is independently an integer of 1 to 4, n is an integer of 1 to 5 and wherein the values of n for the first and second ethers are differentType: ApplicationFiled: November 24, 2009Publication date: June 24, 2010Applicant: CHEMTURA CORPORATIONInventors: Larry D. Timberlake, James D. Siebecker
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Publication number: 20100120990Abstract: A controlled molecular weight polymer of styrene is provided having bromine substituted thereon. Control of molecular weight is achieved by the use of alpha-methyl styrene dimer as a chain transfer agent. The brominated polymer of styrene is useful as a flame retardant, particularly for polyamides giving improved properties including color retention after molding.Type: ApplicationFiled: January 20, 2010Publication date: May 13, 2010Applicant: Chemtura CorporationInventors: Wayne MEYER, Jennifer L. BOHAN, Larry D. TIMBERLAKE, James D. SIEBECKER
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Patent number: 7691947Abstract: A controlled molecular weight polymer of styrene is provided having bromine substituted thereon. Control of molecular weight is achieved by the use of alpha-methyl styrene dimer as a chain transfer agent. The brominated polymer of styrene is useful as a flame retardant, particularly for polyamides giving improved properties including color retention after molding.Type: GrantFiled: May 18, 2009Date of Patent: April 6, 2010Assignee: Chemtura CorporationInventors: Wayne Meyer, Jennifer L. Bohan, Larry D. Timberlake, James D. Siebecker
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Patent number: 7691954Abstract: A controlled molecular weight polymer of styrene is provided having bromine substituted thereon. Control of molecular weight is achieved by the use of alpha-methyl styrene dimer as a chain transfer agent. The brominated polymer of styrene is useful as a flame retardant, particularly for polyamides giving improved properties including color retention after molding.Type: GrantFiled: May 18, 2009Date of Patent: April 6, 2010Assignee: Chemtura CorporationInventors: Wayne Meyer, Jennifer L. Bohan, Larry D. Timberlake, James D. Siebecker
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Patent number: 7612156Abstract: A controlled molecular weight polymer of styrene is provided having bromine substituted thereon. Control of molecular weight is achieved by the use of alpha-methyl styrene dimer as a chain transfer agent. The brominated polymer of styrene is useful as a flame retardant, particularly for polyamides giving improved properties including color retention after molding.Type: GrantFiled: September 30, 2005Date of Patent: November 3, 2009Assignee: Chemtura CorporationInventors: Wayne Meyer, Jennifer L. Bohan, Larry D. Timberlake, James D. Siebecker
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Publication number: 20090227753Abstract: A controlled molecular weight polymer of styrene is provided having bromine substituted thereon. Control of molecular weight is achieved by the use of alpha-methyl styrene dimer as a chain transfer agent. The brominated polymer of styrene is useful as a flame retardant, particularly for polyamides giving improved properties including color retention after molding.Type: ApplicationFiled: May 18, 2009Publication date: September 10, 2009Applicant: Chemtura CorporationInventors: Wayne MEYER, Jennifer L. Bohan, Larry D. Timberlake, James D. Siebecker
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Publication number: 20090221754Abstract: A controlled molecular weight polymer of styrene is provided having bromine substituted thereon. Control of molecular weight is achieved by the use of alph?-methyl styrene dimer as a chain transfer agent. The brominated polymer of styrene is useful as a flame retardant, particularly for polyamides giving improved properties including color retention after molding.Type: ApplicationFiled: May 18, 2009Publication date: September 3, 2009Applicant: Chemtura CorporationInventors: Wayne Meyer, Jennifer L. Bohan, Larry D. Timberlake, James D. Siebecker
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Publication number: 20090156714Abstract: A flame retardant composition comprises (a) an organic halide flame retardant in the form of a powder having an average particle size less than or equal 15 microns and (b) an inorganic oxide in an amount up to 5% of the total weight of the organic halide and the inorganic oxide.Type: ApplicationFiled: September 9, 2008Publication date: June 18, 2009Inventors: Subramaniam Narayan, Harry Hodgen, James D. Siebecker
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Publication number: 20080269416Abstract: A halogenated aryl ether oligomer is formed by halogenation of an aryl ether oligomer and is useful as a flame retardant for flammable macromolecular materials. Typically, the halogenated aryl ether oligomer comprises the following repeating monomeric units: wherein R is hydrogen or alkyl, especially C1 to C4 alkyl, Hal is halogen, m is at least 1, n is 0 to 3 and x is at least 2.Type: ApplicationFiled: April 16, 2008Publication date: October 30, 2008Inventors: Larry D. Timberlake, James D. Siebecker
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Publication number: 20080015394Abstract: A process for substantially perbrominating diphenyl ether comprising the steps of: (A) adding the diphenyl ether to a mixture of: (i) a greater than 400 percent excess of the stoichiometric amount of bromine; and (ii) a catalytically effective amount of a Lewis acid catalyst; (B) heating said mixture to an elevated temperature during the addition; and (C) continuing the reaction at an elevated temperature after addition of the aromatic compound has been completed.Type: ApplicationFiled: July 10, 2007Publication date: January 17, 2008Inventors: Steven Bakeis, David W. Bartley, Stephen B. Falloon, Timothy T. Lawlor, David C. Sanders, James D. Siebecker, Larry D. Timberlake
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Patent number: 7307183Abstract: A method for preparing tetrabromobenzoate ester from a tetrabromophthalic anhydride including the steps of reacting the tetrabromophthalic anhydride with a catalyst and an alcohol at a temperature that favors partial esterification over complete esterification of the tetrabromophthalic anhydride to form a tetrabromophthalate half-ester reaction mixture; and feeding the half-ester reaction mixture to at least one reactor having and maintaining a temperature that favors decarboxylation over esterification to produce a tetrabromobenzoate ester-containing product. The temperature favoring partial esterification of the tetrabromophthalic anhydride is between about 70° C. and 130° C. The temperature favoring decarboxylation over esterification is between about 190° C. and 205° C. The tetrabromobenzoate ester-containing product comprises at least about 85% tetrabromobenzoate ester. The at least one reactor may include two or more reactors connected to one another in series.Type: GrantFiled: July 29, 2003Date of Patent: December 11, 2007Assignee: Great Lakes Chemical CorporationInventors: David W. Bartley, James D. Siebecker, Stephen B. Falloon