Patents Assigned to Chemtura Corporation
  • Patent number: 8193260
    Abstract: Disclosed herein is a process for the preparation of a mixture of styrenated p-cresol species that is liquid at room temperature and has a viscosity of less than 40,000 cps at 25° C., wherein said process affords 2,6-distyrenated p-cresol assaying at 70% minimum by GC area percent, comprising reacting styrene with p-cresol at a molar ratio of 1.85 to 2.1:1, respectively, in the presence of an acid catalyst at elevated temperature, wherein said mixture comprises monostyrenated-p-cresol, distyrenated-p-cresol, and tristyrenated-p-cresol and exhibits an acid number of less than 0.1 mg KOH/gram.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: June 5, 2012
    Assignee: Chemtura Corporation
    Inventors: Michael E. Gelbin, Jonathan S. Hill, Maurice Power
  • Patent number: 8188170
    Abstract: A polymer stabilizing composition comprising a sterically hindered phenol and a phosphite that provides low gel content and enhanced resistance to gas-fading. The stabilizer composition is particular useful for stabilizing polyethylene homopolymers and copolymers, such as linear low density polyethylenes produced from metallocene catalyst. The sterically hindered phenol is selected from the group consisting of 1,3,5-tris-(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanurate, 1,3,5-tris-(3,5-dicyclohexyl-4-hydroxybenzyl)isocyanurate, 1,3,5-tris-(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate,1,3,5-tris(4-t-butyl-3-hydroxy-2,6-dimethylbenzyl)-1,3,5-Triazine-2,4,6-(1H,3H,5H)-trione, and 1,3,5-tris-(3,5-di-tert-butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene. The phosphite preferably is a liquid phosphite composition comprising two or more alkylated aryl phosphites.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: May 29, 2012
    Assignee: Chemtura Corporation
    Inventors: Hayder Zahalka, Michael E. Gelbin, Maurice Power, Jonathan S. Hill
  • Patent number: 8183311
    Abstract: A composition at least two different phosphites, one of which is derived from an alkylated cresol, wherein the composition is a liquid at ambient conditions. The other phosphites may be derived from alkylated cresol, alkylated phenol or other alkylated hydroxyaryl compounds. The cresol may be mono-alkylated or di-alkylated with a C1-C18 alkyl group.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: May 22, 2012
    Assignee: Chemtura Corporation
    Inventors: Michael E. Gelbin, Maurice Power, Jonathan Hill
  • Patent number: 8178005
    Abstract: A composition comprising at least two different alkylaryl phosphites, wherein some alkyl groups have a different number of carbon atoms than other alkyl groups and wherein the composition is a liquid at ambient conditions.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: May 15, 2012
    Assignee: Chemtura Corporation
    Inventors: Michael E. Gelbin, Maurice Power, Jonathan Hill
  • Patent number: 8158038
    Abstract: 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: Grant
    Filed: October 22, 2010
    Date of Patent: April 17, 2012
    Assignee: Chemtura Corporation
    Inventors: Larry D. Timberlake, James D. Siebecker
  • Publication number: 20120071689
    Abstract: Production processes and systems are provided that include reacting halogenated compounds, dehalogenating compounds, reacting alcohol's, reacting olefins and a saturated compounds, reacting reactants having at least two —CF3 groups with reactants having cyclic groups, RF-compositions such as RF-intermediates, RF-surfactants, RF-monomers, RF-monomer units, RF-metal complexes, RF-phosphate esters, RF-glycols, RF-urethanes, and or RF-foam stabilizers. The RF portion can include at least two groups —CF3 groups, at least three —CF3 groups, and/or at least two —CF3 groups and at least two —CH2 groups. Detergents, emulsifiers, paints, adhesives, inks, wetting agents, foamers, and defoamers including the RF-surfactant composition are provided. Acrylics, resins, and polymers are provided that include a RF-monomer unit. Compositions are provided that include a substrate having a RF-composition thereover.
    Type: Application
    Filed: February 10, 2011
    Publication date: March 22, 2012
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY CHEMTURA CORPORATION
    Inventors: Janet Boggs, Stephan Brandstadter, John Chien, Vimal Sharma, E. Bradley Edwards, Vicki Hedrick, Andrew Jackson, Gregory Leman, Edward Norman, Robert Kaufman
  • Publication number: 20120065297
    Abstract: 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: Application
    Filed: September 29, 2011
    Publication date: March 15, 2012
    Applicant: Chemtura Corporation
    Inventors: Larry D. Timberlake, James D. Siebecker, Subramaniam Narayan
  • Patent number: 8129457
    Abstract: A composition is disclosed that comprises an otherwise flammable flexible polyurethane foam and a multi-component flame retardant additive. The flame retardant additive includes an alkyl substituted aryl phosphate and an alkyl phosphate ester wherein the alkyl groups range from C4 to C20 and contain one to six oxygen atoms in the alkyl chain. Optionally, the flame retardant additive includes a halogenated flame retardant containing more than 30 wt. percent of bromine, chlorine, or a mixture thereof.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: March 6, 2012
    Assignee: Chemtura Corporation
    Inventors: Stephen B. Falloon, Matthew D. Phillips
  • Patent number: 8114822
    Abstract: The present invention is directed to a soluble oil composition capable of forming stable emulsions exhibiting superior performance and possessing excellent utility as cutting oil for machines. The composition comprises an overbased alkaline earth metal sulfonate possessing anti-wear properties.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: February 14, 2012
    Assignee: Chemtura Corporation
    Inventors: Michael T. Costello, Igor Riff
  • Patent number: 8110532
    Abstract: The invention relates to antioxidant compositions for lubricants and organic polymers comprising a first antioxidant comprising a reaction product of p-cresol, dicyclopentadiene and isobutylene; and a second antioxidant comprising a diarylamine. The first antioxidant preferably has the structure: wherein n is 0-50, and R1 and R2 are independently hydrogen, a straight or branched C1-C30 alkyl or alkylene group optionally substituted with one or more substituents, C3-C12 cycloalkyl, C5-C12 aryl, or C6-C12 alkylaryl. The second antioxidant preferably has the formula: (R3)a—Ar1—NH—Ar2—(R4)b wherein Ar1 and Ar2 are independently aromatic hydrocarbon groups and R3 and R4 are independently hydrogen or hydrocarbyl groups having from 6 to about 100 carbon atoms and a and b are independently 0 to 3 but (a+b) is not greater than 4.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: February 7, 2012
    Assignee: Chemtura Corporation
    Inventor: Jun Dong
  • Publication number: 20120015853
    Abstract: Overbased MgO dispersions with high magnesium content and acceptably low viscosities are reproducibly prepared without gel formation by heating to 280-360° C. a mixture of MgO, selected dispersants, low MW carboxylic acids, water and a combination of high boiling hydrocarbon and organic diluent, wherein water is more than 8%, typically more than 10% of the reaction mixture. No additional solubilizing or dispersing agents, promoters or reactants such as carbon dioxide, amines, alcohols etc are needed to obtain the desired dispersions. Compositions such as lubricating oils and fuels containing the overbased magnesium dispersions as additives are also disclosed.
    Type: Application
    Filed: June 23, 2011
    Publication date: January 19, 2012
    Applicant: CHEMTURA CORPORATION
    Inventors: Qinggao Ma, Cyril A. Migdal, Kirk A. Schlup, John-Louis DiFlavio, Ronald J. Muir
  • Patent number: 8084511
    Abstract: The invention is a flame retardant for styrene foams. The flame retardant contains both aromatic bromine and an olefin. The olefin is an internal olefin. Desirable flame retardants are selected from: formula I: wherein R1 is C1-C6 and optionally containing a heteroatom or olefin; R2 is C1-C6 and optionally containing a heteroatom or olefin; and R3-R12 is H, C1-C6 (optionally containing a heteroatom), or halogen; and further wherein the compound of formula I is present in a concentration of at least 50 percent of a trans isomer; formula II: wherein R1 is Halogen, C1-C6 and optionally containing a heteroatom or olefin; R2 is Halogen, C1-C6 and optionally containing a heteroatom or olefin; and R3-R7 is H, C1-C6 (optionally containing a heteroatom), or halogen; and formula III: wherein R1 is Halogen, C1-C6 and optionally containing a heteroatom or olefin; R2 is Halogen, H, C1-C6 and optionally containing a heteroatom or olefin; and R3-R6 is H, halogen.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: December 27, 2011
    Assignee: Chemtura Corporation
    Inventors: Mark V. Hanson, Stephen B. Falloon, Wayne Meyer
  • Patent number: 8080699
    Abstract: A final polymer product is formed using a two-stage process and system. In the first stage, a catalyst system is used to polymerize an alpha-olefin monomer to form an effluent. In the second stage, additional alpha-olefin monomer is supplied and is polymerized in the presence of the effluent from the first stage. The second stage produces the final polymer product, which may have a lower molecular weight and viscosity than the polymer formed in the first stage. The final polymer product may be used as a base stock for lubricant compositions.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: December 20, 2011
    Assignee: Chemtura Corporation
    Inventors: Daniel C. Knowles, Jesus R. Fabian
  • Patent number: 8071802
    Abstract: Process for preparing bridged, stereorigid, stereomerically pure dialkoxide metallocenes, diaryl oxide metallocenes and diphenoxide metallocenes of formula Q(Cp)(Cp?)M(OR3)2 in which Cp and Cp? are independently cyclopentadienyl, indenyl or fluorenyl; Q is a bridge between Cp and Cp?; M is a group 4 transition metal, especially Zr, Hf or Ti; R3 is C1-C10 alkyl, optionally substituted by aryl groups, or optionally substituted C6-C10 aryl, characterized in that, a bridged, stereorigid metallocene dihalide Q(Cp)(Cp?)M(X)2, in the form of a rac/meso mixture, is reacted with an alkylating reagent R4-M-(X)n wherein R4 is C1-C10 alkyl or C6-C10 aryl; M is an alkali metal or alkaline earth metal; X is halogen; n is the oxidation number of M reduced by 1; and the resulting reaction mixture or isolated dialkylmetallocene is reacted with an alcohol, an aryl alcohol or a phenol of the general formula HO—R3.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: December 6, 2011
    Assignee: Chemtura Corporation
    Inventors: Ralf-Alexander Wendt, Hans-Joachim Unsleber, Nicole Liedtke
  • Patent number: 8067652
    Abstract: The invention relates to a process for forming a polyalphaolefin, the process comprising the step of polymerizing at least one C8-C12 monomer, preferably a decene such as 1-decene, in the presence of an aluminoxane, an activator and a metallocene to form the polyalphaolefin, wherein the molar ratio of the aluminoxane to the metallocene is less than 250:1. The invention also relates to a process for forming a polyalphaolefin having a desired kinematic viscosity from at least one monomer in the presence of an aluminoxane, an organoboron compound and a metallocene. The process comprises the steps of, inter alia, providing a correlation between (i) the molar ratio of the aluminoxane to at least one of the organoboron compound and the metallocene, and (ii) the kinematic viscosity of the polyalphaolefin to form polyalphaolefins having predictable viscosities.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: November 29, 2011
    Assignee: Chemtura Corporation
    Inventors: Willie C. Bburton, E. Brian Fox
  • Patent number: 8067490
    Abstract: A composition and method for increasing the hydrolytic stability of a stabilizer composition comprising a first phosphite, a second phosphite, an optional phosphonite and an acid scavenger.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: November 29, 2011
    Assignee: Chemtura Corporation
    Inventors: Hayder Zahalka, Karl Diefenbach
  • Patent number: 8061398
    Abstract: A non-pneumatic tire comprising side cavities that are staggered with respect to laterally opposing side cavities, and laterally extending tread grooves that are either in substantial radial alignment with the cavities or substantially offset relative to the cavities. The tread grooves have at least one wall that is angled with respect to the radial direction, i.e., the direction relative to the tire's axis of rotation. The wall may be an open angle having an angle of 5° to 65° relative to the radial direction. Also provided are processes for making such tires and to off-the-road (OTR) vehicles employing such tires.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: November 22, 2011
    Assignee: Chemtura Corporation
    Inventors: Richard L. Palinkas, Ian Laskowitz, George H. Nybakken
  • Patent number: 8061698
    Abstract: A geometric shaped side bearing pad includes a top and a surface extending an angle ? towards the top, wherein the bearing pad has a geometric shape and a non-linear spring rate which levels out a reaction force without buckling. The surface of the bearing pad can have two sides or four sides, can have spacing within the surface, or can be solid. The angle ? can be within the range of about 20 degrees and 85 degrees, and may preferably be within the range of about 30 degrees and 45 degrees to achieve non-linear load/deflection. The top of the bearing pad can have a slot defined therethrough to accommodate a protrusion in a fixture to engage the bearing pad. The bearing pad can provide a friction contact with an object and enables lateral force transfer to the bearing pad, thereby providing lateral stiffness.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: November 22, 2011
    Assignee: Chemtura Corporation
    Inventor: Richard L. Palinkas
  • Patent number: 8062551
    Abstract: An antiozonant mixture is disclosed wherein said mixture comprises at least two compounds, (A) at least one of which is of the structure and (B) at least one other of which is of the structure wherein R1 is a straight chain, branched, or cyclic alkyl group comprising from three to seven carbon atoms, and R2 is a straight chain, branched, or cyclic alkyl group comprising at least eleven carbon atoms.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: November 22, 2011
    Assignee: Chemtura Corporation
    Inventors: Martin J. Hannon, Russell E. Malz, Jr., Joseph F. Stieber
  • Patent number: 8056593
    Abstract: A non-pneumatic tire comprising side cavities that are staggered with respect to laterally opposing side cavities, and laterally extending tread grooves that are in substantial radial alignment with the cavities. In another embodiment, the invention is to a tire comprising side ribs that are staggered with respect to laterally opposing side ribs, and laterally extending tread grooves that are substantially offset relative to the side ribs. Also provided are processes for making such tires and to off-the-road (OTR) vehicles employing such tires.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: November 15, 2011
    Assignee: Chemtura Corporation
    Inventors: Richard Palinkas, Ian Laskowitz, George Nybakken