Patents Assigned to Chemtura Corporation
  • Stabilized lubricant compositions
    Patent number: 7829511
    Abstract: A stabilized lubricant composition is disclosed that comprises lubricating oil and a mixture of (a) at least one organophosphite compound and (b) at least one aromatic secondary amine or one substituted phenol or mixtures thereof. The compositions have been found to be highly resistant to oxidation under demanding service conditions and to be useful as turbine lubricants.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: November 9, 2010
    Assignee: Chemtura Corporation
    Inventors: Jun Dong, Cyril A. Migdal
  • Thermoplastic blend compositions as soft coupling agents
    Patent number: 7825180
    Abstract: A process for lowering the stiffness of filled thermoplastic polymer formulations is disclosed wherein the process comprises including in said formulation a low modulus coupling agent wherein said coupling agent comprises a blend of at least two functionalized polyolefins. Also disclosed is a process for producing soft coupling agents comprising blending at least two functionalized polyolefins in pre-determined ratios, whereby chemical and physical properties of the coupling agents can be controlled.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: November 2, 2010
    Assignee: Chemtura Corporation
    Inventors: Abuzar Syed, John M. Wefer
  • Process for controlling the molecular weight of polymers of bromostyrene
    Patent number: 7820764
    Abstract: 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: Grant
    Filed: January 20, 2010
    Date of Patent: October 26, 2010
    Assignee: Chemtura Corporation
    Inventors: Wayne Meyer, Jennifer L. Bohan, Larry D. Timberlake, James D. Siebecker
  • SOLID COMPOSITION FOR TREATING WATER
    Publication number: 20100264361
    Abstract: Solid water treatment compositions are provided comprising (a) a halogen-containing source; (b) a boron-containing source; and (c) a polyphosphate-containing source. Methods for their use are also provided.
    Type: Application
    Filed: October 19, 2009
    Publication date: October 21, 2010
    Applicant: CHEMTURA CORPORATION
    Inventors: Nidhi Rawat, David F. Purdy, Michael J. Engram
  • Stabilized lubricant compositions
    Patent number: 7799101
    Abstract: A stabilized lubricant composition is disclosed that comprises lubricating oil and a mixture of (a) at least one organophosphite compound and (b) at least one aromatic secondary amine or one substituted phenol or mixtures thereof. The compositions have been found to be highly resistant to oxidation under demanding service conditions.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: September 21, 2010
    Assignee: Chemtura Corporation
    Inventors: Jun Dong, Cyril A. Migdal
  • PROCESSES FOR MAKING ALKYL HALIDES
    Publication number: 20100234653
    Abstract: The invention is directed to processes for producing an alkyl halide, preferably isobutyl bromide. In one embodiment, the process comprises the steps of: (a) contacting an alcohol with a hydrogen halide in a reactor at elevated temperature under conditions effective to form an initial product mixture comprising the alkyl halide, the alcohol, the hydrogen halide and water; (b) cooling the initial product mixture to form a cooled organic phase positioned above a cooled aqueous phase; (c) separating the cooled organic phase from the cooled aqueous phase. The process preferably further comprises a step of: (d) heating at least a portion of the cooled aqueous phase under conditions effective to form additional alkyl halide.
    Type: Application
    Filed: March 12, 2009
    Publication date: September 16, 2010
    Applicant: Chemtura Corporation
    Inventors: Mitchel Cohn, Steven J. Hobbs
  • Solid composition for treating water
    Patent number: 7780857
    Abstract: A method for reducing the halogen off-gassing rate in a solid water treatment halogen-containing composition is provided comprising forming a solid water treatment halogen-containing composition comprising (a) a halogen containing source; (b) a boron-containing source and (c) a polyphosphate-containing source.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: August 24, 2010
    Assignee: Chemtura Corporation
    Inventors: Nidhi Rawat, David F. Purdy, Michael J. Engram
  • Heterogeneous organotin catalysts
    Patent number: 7781610
    Abstract: Supported heterogeneous organotin catalysts of the formula X1, X2, or X3: wherein Z is a spacer group; Y is an insoluble phenyl-group containing copolymer; R1, R2, R3, R5, and R6 are independently selected from halogen, alkyl, alkylene, phenyl, vinyl, allyl, naphthyl, aralkyl, and Z; and R4 is alkyl, alkylene, phenyl, vinyl, allyl, naphthyl, or aralkyl.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: August 24, 2010
    Assignee: Chemtura Corporation
    Inventors: Uwe Schneider, Bernard Jousseaume, Karine Darriet, Thierry Toupance
  • LOW MOLECULAR WEIGHT HALOGENATED AROMATIC POLYMERS AND THEIR USE AS FLAME RETARDANTS
    Publication number: 20100210790
    Abstract: A halogenated aromatic polymer has between 2 and 100 monomer units each comprising an aromatic group substituted with at least one halide group, wherein at least one of said monomer units has the following formula (I): —Ar1-A-(Ar2-B)y-(Ar3-C)z-??(I) wherein Ar1, Ar2 and Ar3 are the same or different and each is an aromatic group substituted with at least one halide group; A is selected from CO, CO2, S, SO2, a single bond, and a C1 to C6 alkyl chain; B and C are the same or different and each is selected from O, CO, CO2, CO3, S, SO2, a single bond, and a C1 to C6 alkyl chain; and each of y and z is independently zero or 1.
    Type: Application
    Filed: February 9, 2010
    Publication date: August 19, 2010
    Applicant: CHEMTURA CORPORATION
    Inventors: Larry D. Timberlake, James D. Sibecker
  • Method and apparatus for producing decabromodiphenyl alkanes
    Patent number: 7776289
    Abstract: A method of producing decabromodiphenyl alkanes includes the steps of charging a reaction vessel with bromine and a bromination catalyst and introducing a diphenyl alkane into the vessel at a location above the level of the charge bromine and catalyst. A dip tube apparatus for introducing the diphenyl alkane includes an inner tube and an outer tube, each of which are disposed above the surface of the bromine reaction vessel. The inner tube is fitted with a plug having an opening. Diphenyl alkane flows through the inner tube, out the opening in the plug, and into the reactor. The outer tube is disposed around and along the inner tube. Reaction mass from the vessel is recirculated from the vessel, through the outer tube and back to the vessel so as to form a curtain of reaction mass around the stream of diphenyl alkane being simultaneously fed into the reaction vessel.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: August 17, 2010
    Assignee: Chemtura Corporation
    Inventors: Stephen B Falloon, Samuel U Mulligan, Donavon M McElveen, Ray W Atwell
  • Heterogeneous organotin catalysts
    Patent number: 7772417
    Abstract: Supported heterogeneous organotin catalysts of the formula X1, X2, or X3: wherein Z is a spacer group; Y is an insoluble phenyl-group containing copolymer; R1, R2, R3, R5, and R6 are independently selected from halogen, alkyl, alkylene, phenyl, vinyl, allyl, naphthyl, aralkyl, and Z; and R4 is alkyl, alkylene, phenyl, vinyl, allyl, naphthyl, or aralkyl.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: August 10, 2010
    Assignee: Chemtura Corporation
    Inventors: Uwe Schneider, Bernard Jousseaume, Karine Darriet, Thierry Toupance
  • POLYMERS WITH LOW GEL CONTENT AND ENHANCED GAS-FADING
    Publication number: 20100197837
    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: Application
    Filed: October 23, 2009
    Publication date: August 5, 2010
    Applicant: Chemtura Corporation
    Inventors: Hayder Zahalka, Michael E. Gelbin, Maurice Power, Jonathan S. Hill
  • ALKYLTIN SULFANYL ESTER THIOLS
    Publication number: 20100190902
    Abstract: Disclosed herein are compounds of the formula: (R)x—Sn—(R?)4-x wherein x is 1 or 2; R is alkyl of from 1 to 12 carbon atoms; and R? is a moiety selected from the group consisting of: and mixtures thereof, wherein y is 1, 2, 3, or 4; and z is 1, 2, 3, or 4, and processes for forming such compounds. The compounds are excellent stabilizers for halogen-containing resins, such as PVC.
    Type: Application
    Filed: January 27, 2009
    Publication date: July 29, 2010
    Applicant: Chemtura Corporation
    Inventor: Edward Krainer
  • PRODUCTION OF POLYOL ESTER LUBRICANTS FOR REFRIGERATION SYSTEMS
    Publication number: 20100190672
    Abstract: A poly(neopentylpolyol) ester composition is produced by reacting a neopentylpolyol having the formula: wherein each R is independently selected from the group consisting of CH3, C2H5 and CH2OH and n is a number from 1 to 4, with at least one monocarboxylic acid having 2 to 15 carbon atoms in the presence of an acid catalyst and at an initial mole ratio of carboxyl groups to hydroxyl groups of greater than 0.5:1 to 0.95:1 to form a partially esterified poly(neopentylpolyol) composition. Then the partially esterified poly(neopentylpolyol) composition is reacted with additional monocarboxylic acid having 2 to 15 carbon atoms to form a final poly(neopentylpolyol) ester composition.
    Type: Application
    Filed: January 21, 2010
    Publication date: July 29, 2010
    Applicant: CHEMTURA CORPORATION
    Inventors: Dale Carr, Jeffrey Hutter, Richard Kelley, Edward T. Hessell, Roberto Urrego
  • LIQUID BUTYLARYL PHOSPHITE COMPOSITIONS
    Publication number: 20100190900
    Abstract: A phosphite composition comprising at least two of a tris(dibutylaryl) phosphite, a tris(monobutylaryl) phosphite, a bis(dibutylaryl)monobutylaryl phosphite, and a bis(monobutylaryl)dibutylaryl phosphite. The inventive phosphite composition is a liquid at ambient conditions.
    Type: Application
    Filed: July 31, 2009
    Publication date: July 29, 2010
    Applicant: CHEMTURA CORPORATION
    Inventors: Michael E. GELBIN, Maurice POWER, Jonathan S. HILL
  • CARBON DIOXIDE-BASED WORKING FLUIDS FOR REFRIGERATION AND AIR CONDITIONING SYSTEMS
    Publication number: 20100181523
    Abstract: A working fluid comprising (a) a refrigerant comprising carbon dioxide and (b) a poly(neopentylpolyol)ester composition produced by reacting a neopentylpolyol having the formula: wherein each R is independently selected from the group consisting of CH3, C2H5 and CH2OH and n is a number from 1 to 4, with at least one monocarboxylic acid having 2 to 15 carbon atoms in the presence of an acid catalyst and at a mole ratio of carboxyl groups to hydroxyl groups of less than 1:1 to form a partially esterified composition. The partially esterified poly(neopentyl)polyol composition is then reacted with additional monocarboxylic acid having 2 to 15 carbon atoms to form a final poly(neopentylpolyol)ester composition.
    Type: Application
    Filed: January 8, 2010
    Publication date: July 22, 2010
    Applicant: Chemtura Corporation
    Inventors: Richard Kelley, Dale Carr, Jeffrey Hutter, Edward T. Hessell
  • HETEROGENEOUS ORGANOTIN CATALYSTS
    Publication number: 20100174106
    Abstract: Supported heterogeneous organotin catalysts of the formula X1, X2, or X3: wherein Z is a spacer group; Y is an insoluble phenyl-group containing copolymer; R1, R2, R3, R5, and R6 are independently selected from halogen, alkyl, alkylene, phenyl, vinyl, allyl, naphthyl, aralkyl, and Z; and R4 is alkyl, alkylene, phenyl, vinyl, allyl, naphthyl, or aralkyl.
    Type: Application
    Filed: February 19, 2010
    Publication date: July 8, 2010
    Applicant: Chemtura Corporation
    Inventors: Uwe Schneider, Bernard Jousseaume, Karine Darriet, Thierry Toupance
  • FUEL AND LUBRICANT ADDITIVE CONTAINING ALKYL HYDROXY CARBOXYLIC ACID BORON ESTERS
    Publication number: 20100162616
    Abstract: A composition is disclosed that comprises the reaction product of an acidic organic compound and a boron compound. The composition is useful as a detergent additive for lubricants and hydrocarbon fuels.
    Type: Application
    Filed: January 11, 2010
    Publication date: July 1, 2010
    Applicant: Chemtura Corporation
    Inventor: Ronald J. MUIR
  • FLAME RETARDANT HALOGENATED PHENYL ETHER BLENDS
    Publication number: 20100160516
    Abstract: 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: Application
    Filed: November 24, 2009
    Publication date: June 24, 2010
    Applicant: CHEMTURA CORPORATION
    Inventors: Larry D. Timberlake, James D. Siebecker
  • HETEROGENEOUS ORGANOTIN CATALYSTS
    Publication number: 20100152477
    Abstract: Supported heterogeneous organotin catalysts of the formula X1, X2, or X3: wherein Z is a spacer group; Y is an insoluble phenyl-group containing copolymer; R1, R2, R3, R5, and R6 are independently selected from halogen, alkyl, alkylene, phenyl, vinyl, allyl, naphthyl, aralkyl, and Z; and R4 is alkyl, alkylene, phenyl, vinyl, allyl, naphthyl, or aralkyl.
    Type: Application
    Filed: February 19, 2010
    Publication date: June 17, 2010
    Applicant: Chemtura Corporation
    Inventors: Uwe SCHNEIDER, Bernard JOUSSEAUME, Karine DARRIET, Thierry TOUPANCE