Patents Assigned to Bromine Compounds Ltd.
  • Patent number: 10800903
    Abstract: The invention provides a transparent polycarbonate composition comprising a polycarbonate resin and a mixture of flame retardants comprising (A) tris(2,4,6-tribromophenoxy)-s-triazine and (B) an aromatic sulphone sulphonate in the form of an alkali metal salt. The composition achieves a UL-94 flammability test rating of V-0 at a polycarbonate thickness equal to or less than 1.6 mm. Processes for preparing the composition are also disclosed.
    Type: Grant
    Filed: May 7, 2017
    Date of Patent: October 13, 2020
    Assignee: Bromine Compounds Ltd.
    Inventors: Eyal Eden, Yaniv Hirschsohn, Yelena Epshtein Assor
  • Publication number: 20200123309
    Abstract: A curable epoxy composition suitable for surface application, comprising one or more epoxy resin (s); 2, 4, 6-tribromophenyl end-capped tetrabromobisphenol A epoxy-based flame retardant; and phosphorus-containing compound selected from the group consisting of one or more of: ammonium polyphosphate; resorcinol bis (diphenyl phosphate); and liquid alkylated triphenyl phosphate ester. The composition is substantially Sb2O3-free.
    Type: Application
    Filed: December 14, 2017
    Publication date: April 23, 2020
    Applicant: BROMINE COMPOUNDS LTD.
    Inventors: Meyrav ABECASSIS-WOLFOVICH, Smadar SWISSA
  • Patent number: 10626289
    Abstract: The present invention discloses novel flame retardant aqueous formulations comprising micronized particles of brominated epoxy polymers having a predetermined molecular weight, their use as flame retardant coating of wood-based substrates, their preparation and flame-retarded wood-based substrates prepared by using them.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: April 21, 2020
    Assignee: BROMINE COMPOUNDS LTD.
    Inventors: Meyrav Abecassis Wolfovich, Smadar Swissa, Jakub Lison, Ella Rapaport
  • Patent number: 10587022
    Abstract: The invention relates to a method of operating a zinc-bromine battery, especially at a high temperature, comprising adding 1-n-butyl-2-methyl-pyridinium bromide to the electrolyte of said battery, and charging or discharging said cell. Also provided is the use of 1-n-butyl-2-methyl-pyridinium bromide as an additive in a zinc-bromine battery operating at a temperature above 30° C., and an aqueous concentrate with high content of 1-n-butyl-2-methyl-pyridinium bromide.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: March 10, 2020
    Assignee: BROMINE COMPOUNDS LTD.
    Inventors: Ben-Zion Magnes, Ran Elazari, Iris Ben-David, Eli Lancry
  • Patent number: 10533278
    Abstract: The present invention discloses novel flame retardant aqueous formulations comprising micronized particles of brominated epoxy polymers having a predetermined molecular weight and glass transition temperature, their use as flame retardants for textile applications, their preparation and flame-retarded textile fabrics prepared by using them.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: January 14, 2020
    Assignee: BROMINE COMPOUNDS LTD.
    Inventors: Ella Rapaport, Itzhak Shalev, Ganit Levi-Ruso
  • Patent number: 10472462
    Abstract: The invention relates to a process for preparing bromine-containing polymer, comprising a Friedel-Crafts alkylation reaction of tetrabromoxylylene dihalide, or tetrabromoxylylene dihalide in combination with pentabromobenzyl halide, with a reactant having one or more six-membered aromatic rings, wherein the reaction takes place in a solvent in the presence of a Friedel-Crafts catalyst, and isolating from the reaction mixture the bromine-containing polymer. The so-formed polymers and their use as flame retardants form additional aspects of the invention.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: November 12, 2019
    Assignee: Bromine Compounds Ltd.
    Inventors: Mark Gelmont, Michael Yuzefovich, Andrew Piotrowski, David Yoffe, Ron Frim, Yaniv Hirschsohn
  • Publication number: 20190249004
    Abstract: A composition comprising polyester and a mixture of flame retardants having at least the following two components: calcium hypophosphite and bromine-containing polymer.
    Type: Application
    Filed: October 17, 2017
    Publication date: August 15, 2019
    Applicant: BROMINE COMPOUNDS LTD.
    Inventors: Yaniv HIRSCHSOHN, Eyal EDEN, Yelena EPSHTEIN ASSOR, Shay DICHTER
  • Patent number: 10336858
    Abstract: The invention relates to a process for preparing bromine-containing polymer, comprising a Friedel-Crafts alkylation reaction of tetrabromoxylylene dihalide, or tetrabromoxylylene dihalide in combination with pentabromobenzyl halide, with a reactant having one or more six-membered aromatic rings, wherein the reaction takes place in a solvent in the presence of a Friedel-Crafts catalyst, and isolating from the reaction mixture the bromine-containing polymer. The so-formed polymers and their use as flame retardants form additional aspects of the invention.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: July 2, 2019
    Assignee: Bromine Compounds Ltd.
    Inventors: Mark Gelmont, Michael Yuzefovich, Andrew Piotrowski, David Yoffe, Ron Frim, Yaniv Hirschsohn
  • Publication number: 20190185755
    Abstract: A transparent composition comprising polycarbonate and a mixture of flame retardants, wherein the flame retardants are aryl phosphate ester of hydroquinone and tris(2,4,6-tribromophenoxy)-s-triazine.
    Type: Application
    Filed: September 5, 2017
    Publication date: June 20, 2019
    Applicant: BROMINE COMPOUNDS LTD.
    Inventors: Marc LEIFER, Eyal EDEN, Yaniv HIRSCHSOHN
  • Patent number: 10227531
    Abstract: The invention provides a process for preparing bromine-containing polymers, comprising a Friedel-Crafts alkylation reaction of pentabromobenzyl halide with a polymer reactant which contains one or more six-membered aromatic ring(s) in its repeat unit, in the presence of at least one Friedel-Crafts catalyst. The so-formed bromine-containing polymers, having pendent —CH2C6Br5 groups attached to at least a portion of the six-membered aromatic rings of the polymer, with a carbon ring atom of said six-membered aromatic ring being bonded to the aliphatic carbon of said —CH2C6Br5 pendent group, are also provided. These bromine-containing polymers are useful as flame retarding agents.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: March 12, 2019
    Assignee: Bromine Compounds Ltd.
    Inventors: Mark Gelmont, Michael Yuzefovich, David Yoffe, Renata Yelizarov, Ron Frim, Lior Melamed
  • Patent number: 9988332
    Abstract: The invention relates to compounds of the formula Ar(—CH2C6Br5)y, wherein Ar indicates a structure comprising one or more six-membered aromatic ring(s) and —CH2C6Br5 indicates a pentabromobenzyl group, characterized in that at least one carbon atom of said six-membered aromatic ring(s) is bonded to the benzylic carbon of said —CH2C6Br5 group, wherein y, which indicates the number of the —CH2C6Br5 groups in said compound, is not less than 1. Processes for preparing the compounds and their use as flame retardants are also disclosed.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: June 5, 2018
    Assignee: BROMINE COMPOUNDS LTD.
    Inventors: Mark Gelmont, Michael Yuzefovitch, David Yoffe, Ron Frim
  • Patent number: 9963359
    Abstract: The invention relates to a process for recovering bromide from a halide-containing aqueous stream, comprising the steps of: providing a feed of halide-containing aqueous stream; contacting an anion-exchange resin with said feed, to form halide-loaded resin; treating said halide-loaded resin with a regenerant and subsequently with a rinse to produce, in succession, a chloride-rich solution, a mixed chloride/bromide solution, a bromide-rich solution and an essentially halide-free solution; directing said mixed chloride/bromide solution to said feed; processing said bromide-rich solution to recover one or more bromide products; and utilizing said essentially halide-free solution for regenerant dilution and/or rinsing of said resin. An apparatus for carrying out the process is also disclosed.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: May 8, 2018
    Assignee: BROMINE COMPOUNDS LTD.
    Inventors: Emanuel Korngold, Mordechai Cohen, Mira Bergstein Freiberg, Sharon Krumbein Rubin
  • Patent number: 9905874
    Abstract: The invention relates to the use of 1-alkyl-2-alkyl pyridinium halide (e.g., 1-ethyl-2-methyl pyridinium bromide), 1-alkyl-3-alkyl pyridinium halide (e.g., 1-ethyl-3-methyl pyridinium bromide) or 1-alkyl-3-alkyl imidazolium halide (e.g., 1-butyl 3-methyl imidazolium bromide) as additives in an electrolyte used in hydrogen/bromine cells, for complexing the elemental bromine formed in such cells. The invention also provides an electrolyte comprising aqueous hydrogen bromide and said additives, and processes for operating an electrochemical flow cell selected from the group consisting of hydrogen/bromine or vanadium/bromine cells.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: February 27, 2018
    Assignee: BROMINE COMPOUNDS LTD.
    Inventors: Ben-Zion Magnes, Eli Lancry, Mira Bergstein-Freiberg, David Itzhak, Yasmin Herscovitz-Levy, Vered Atiya-Zuckerman
  • Patent number: 9850129
    Abstract: A solvent extraction process for recovering bromide from a sulfate-containing aqueous stream, the process comprises an extraction step wherein said aqueous stream is mixed with an extraction medium comprising a tertiary amine extractant dissolved in one or more water-immiscible organic solvents, wherein said mixing is carried out in a strongly acidic environment, thereby forming bromide-containing extract and a raffinate with a reduced bromide level, wherein the bromide-containing extract is optionally treated to further minimize the presence of sulfate and is subsequently combined with an aqueous calcium source to form calcium bromide.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: December 26, 2017
    Assignee: Bromine Compounds Ltd.
    Inventors: Sarit Sarmili, Gideon Friedman, Eyal Barnea, David Fuks, Mira Bergstein Freiberg
  • Patent number: 9722272
    Abstract: The invention relates to the use of nitrogen-containing compounds belonging to the classes of N-alkyl pyridinium halide, N-alkyl-2-alkyl pyridinium halide and 1-alkyl-3-alkyl imidazolium halide, as additives in electrolyte solutions for zinc bromine membraneless flow cells. The invention also provides electrolyte solutions comprising such additives and processes for operating said cells.
    Type: Grant
    Filed: May 9, 2013
    Date of Patent: August 1, 2017
    Assignee: BROMINE COMPOUNDS LTD.
    Inventors: Ben-Zion Magnes, Iris Ben David, Eli Lancry, Mira Bergstein-Freiberg
  • Patent number: 9722281
    Abstract: The invention relates to the use of at least one 1-alkyl-3-alkyl-pyridinium halide, in particular 1-alkyl-3-methyl-pyridinium bromide, as an additive in bromine-generating electrochemical cells, such as zinc/bromine cells. Processes for preparing 1-alkyl-3-methyl-pyridinium bromide and concentrated aqueous solutions comprising same for use as additives in the aforementioned cells, are also disclosed.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: August 1, 2017
    Assignee: BROMINE COMPOUNDS LTD.
    Inventors: Ben-Zion Magnes, Iris Ben David, Eli Lancry, Mira Bergstein-Freiberg, Nirit Zer-Zion
  • Publication number: 20170145151
    Abstract: The invention relates to a process for preparing bromine-containing polymer, comprising a Friedel-Crafts alkylation reaction of tetrabromoxylylene dihalide, or tetrabromoxylylene dihalide in combination with pentabromobenzyl halide, with a reactant having one or more six-membered aromatic rings, wherein the reaction takes place in a solvent in the presence of a Friedel-Crafts catalyst, and isolating from the reaction mixture the bromine-containing polymer. The so-formed polymers and their use as flame retardants form additional aspects of the invention.
    Type: Application
    Filed: July 7, 2015
    Publication date: May 25, 2017
    Applicant: Bromine Compounds Ltd.
    Inventors: Mark Gelmont, Michael Yuzefovich, Andrew Piotrowski, David Yoffe, Ron Frim, Yaniv Hirschsohn
  • Patent number: 9631144
    Abstract: A liquid flame retardant composition which comprises one or more flame retarding agents, which are the epoxides obtainable by reacting tetrabromobisphenol A with epichlorohydrin and their end-capped derivatives represented by Formula (1) is provided. The liquid composition is especially useful in the preparation of rigid polyurethane foams.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: April 25, 2017
    Assignee: Bromine Compounds Ltd.
    Inventors: Mark Gelmont, Michael Peled, Dina Alon, Ron Frim, Yoav Bar-Yaakov
  • Patent number: 9573878
    Abstract: A process for preparing pentabromobenzyl acrylate through the reaction of pentahalobenzyl halide with a salt of acrylic acid in a water-immiscible solvent, wherein said salt is in aqueous form and the reaction is carried out in the presence of a phase transfer catalyst. A process for polymerizing the pentabromobenzyl acrylate in halogenated aromatic solvent and the poly(pentabromobenzyl acrylate) obtained are also disclosed.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: February 21, 2017
    Assignee: BROMINE COMPOUNDS LTD.
    Inventor: Jacob Oren
  • Patent number: 9493584
    Abstract: Poly (pentabromobenzyl acrylate) having weight average molecular weight (Mw) in the range from 4,000 to 120,000 and polydispersity index of less than 10 as determined by high temperature gel permeation chromatography, wherein the glass transition temperature of the poly (pentabromobenzyl acrylate) is not more than 150 C.°, the poly (pentabromobenzyl acrylate) includes chains which are terminated by an end group derived from a chain length regulator, wherein the end group is a thiol group —SR1, and wherein R1, is a linear or branched alkyl group composed of not less than 8 carbon atom.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: November 15, 2016
    Assignee: BROMINE COMPOUNDS LTD.
    Inventors: Bertha Croitoru, Dov Beruben, Michael Peled, Yaakov Rachmilevitch, Yaniv Hirschsohn, Yelena Epshtein Assor, Ella Rapaport, Dan Kopel