Patents Assigned to Chemtura Corporation
  • CALCIUM HYPOCHLORITE COMPOSITIONS
    Publication number: 20090008603
    Abstract: Stable compositions of calcium hypochlorite containing selected hydrated inorganic salts having a sufficiently high enthalpy and the ability to provide water release to sufficiently quench reactions and reduce the potential for conflagration.
    Type: Application
    Filed: March 17, 2008
    Publication date: January 8, 2009
    Applicant: Chemtura Corporation
    Inventor: John P. GARRIS
  • Methods for controlling and removing bacterial cell membrane fragments from turbulent waters
    Patent number: 7449119
    Abstract: Compositions containing chlorine and/or bromine in combination with chlorine dioxide are found to be synergistic against non-tuberculosis mycobacterium such as Mycobacteria chelonae.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: November 11, 2008
    Assignee: Chemtura Corporation
    Inventor: Geoffrey Brown
  • ALKYLATION OF N'-PHENYL-N-ALKYLPHENYLENEDIAMINES IN IONIC LIQUID AND N'-PHENYL-N-ALKYL(ALKYLPHENYLENE) DIAMINES PRODUCED THEREBY
    Publication number: 20080234517
    Abstract: A process for alkylation of a N?-phenyl-N-alkyl-p-phenylenediamine of specified formula in an ionic liquid unexpectedly produces a N?-phenyl-N-alkyl(alkylphenylene)diamine of a second specified formula. The use of an inorganic liquid permits convenient separation of the alkylated reaction product from the reaction mixture.
    Type: Application
    Filed: April 16, 2008
    Publication date: September 25, 2008
    Applicant: Chemtura Corporation
    Inventors: Steven J. HOBBS, Joseph F. STIEBER
  • Pesticidal diazene oxide carboxylates
    Patent number: 7399757
    Abstract: Pesticidal compounds having the structural formula wherein R1 and R2 are each, independently, C1-6 alkyl, compositions comprising the compounds and methods for their use as pesticides.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: July 15, 2008
    Assignee: Chemtura Corporation
    Inventors: Mark A. Dekeyser, Paul T. McDonald
  • Alkylation of N?-phenyl-N-alkylphenylenediamines in ionic liquid, N?-phenyl-N-alkyl (alkylphenylene) diamines produced thereby, and lubricant compositions containing same
    Patent number: 7390928
    Abstract: A process for alkylation of a N?-phenyl-N-alkyl-p-phenylenediamine of specified formula in an ionic liquid unexpectedly produces a N?-phenyl-N-alkyl(alkylphenylene)diamine of a second specified formula. The use of an inorganic liquid permits convenient separation of the alkylated reaction product from the reaction mixture.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: June 24, 2008
    Assignee: Chemtura Corporation
    Inventors: Steven J. Hobbs, Joseph F. Stieber
  • Ring alkylation of aniline or an aniline derivative using ionic liquid catalysts
    Patent number: 7378554
    Abstract: A process for ring-alkylating aniline or an aniline derivative in which aniline or an aniline derivative is reacted with an alkylating agent in the presence of an ionic liquid which includes a Lewis acid and a quaternary cation, to produce a ring-alkylated alkylaniline or a ring-alkylated aniline derivative. The use of an ionic liquid permits convenient separation of the alkylated reaction product from the reactants.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: May 27, 2008
    Assignee: Chemtura Corporation
    Inventors: Steven J. Hobbs, Venkatramanan K. Madabusi, Jin-Yun Wang, Joseph F. Steiber
  • Direct alkylation of N-alkyl-N?-phenyl-p-phenylenediamine
    Patent number: 7361788
    Abstract: A single-step process is disclosed for the ring alkylation of at least one N-alkyl-N?-phenyl-phenylenediamine with at least one olefin wherein the process comprises heating a mixture of the N-alkyl-N?-phenyl-phenylenediamine(s) and olefin(s) in the presence of a catalytic amount of at least one alkyl aluminum halide at a temperature of from about 50 to about 350° C. in a sealed vessel for from about one to about 30 hours.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: April 22, 2008
    Assignee: Chemtura Corporation
    Inventors: Jin-Yun Wang, Huiling Ding, Joseph F. Stieber
  • Alkylation of a diphenylamine compound in ionic liquid
    Patent number: 7145038
    Abstract: A process for alkylation of a diphenylamine compound in an ionic liquid. The use of an ionic liquid permits convenient separation of the alkylated reaction product from the reaction mixture.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: December 5, 2006
    Assignee: Chemtura Corporation
    Inventor: Steven J. Hobbs