Patents Assigned to Bromine Compounds Limited
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Patent number: 8114905Abstract: The present invention provides an essentially pure compacted 2,2-Dibromo-3-nitrilopropionamide (DBNPA) in a granular and/or tablet and/or briquette and/or pellet form. The present invention further provides a process for preparing the same essentially pure compacted DBNPA.Type: GrantFiled: March 17, 2009Date of Patent: February 14, 2012Assignee: Bromine Compounds LimitedInventors: Michael Lupin, Ayala Lupin, legal representative, David Feldman
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Patent number: 7651622Abstract: A process for killing microorganisms and controlling biofouling in high chlorine demand waters comprises mixing two components, one of which is an oxidant and the other an ammonium salt, and adding the mixture immediately to the aqueous system to be treated.Type: GrantFiled: October 2, 2008Date of Patent: January 26, 2010Assignee: Bromine Compounds LimitedInventor: Ayala Barak
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Publication number: 20090202603Abstract: The present invention provides an essentially pure compacted 2,2-Dibromo-3-nitrilopropionamide (DBNPA) in a granular and/or tablet and/or briquette and/or pellet form. The present invention further provides a process for preparing the same essentially pure compacted DBNPA.Type: ApplicationFiled: March 17, 2009Publication date: August 13, 2009Applicant: Bromine Compounds LimitedInventors: Michael Lupin, Ayala Lupin, David Feldman
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Publication number: 20090107923Abstract: A process for killing microorganisms and controlling biofouling in high chlorine demand waters comprises mixing two components, one of which is an oxidant and the other an ammonium salt, and adding the mixture immediately to the aqueous system to be treated.Type: ApplicationFiled: October 2, 2008Publication date: April 30, 2009Applicant: Bromine Compounds LimitedInventor: Ayala Barak
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Patent number: 7524884Abstract: The present invention provides an essentially pure compacted 2,2-Dibromo-3-nitrilopropionamide (DBNPA) in a granular and/or tablet and/or briquette and/or pellet form. The present invention further provides a process for preparing the same essentially pure compacted DBNPA.Type: GrantFiled: September 26, 2001Date of Patent: April 28, 2009Assignee: Bromine Compounds LimitedInventors: Ayala Lupin, legal representative, David Feldman, Michael Lupin
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Patent number: 7452520Abstract: A process for the production of calcium bromide from feed brines, particularly from Dead Sea End Brine (EB), is described. The process comprises extracting the feed brine in countercurrent with a composite organic solvent; optionally, purifying the extract to increase the ratio Br:Cl by contacting it with a part of the product; and washing the purified extract with water to yield the product, that is an aqueous solution of CaBr2. The composite solvent comprises an anionic extractant, such as an amine or a mixture of amines; a cationic extractant, such as a carboxylic phosphoric or sulphonic acid or a mixtures of said acids; and diluent/modifier, which is an organic solvent. An apparatus for the production of calcium bromide is also described, which comprises: an extraction battery; optionally, a purification battery; and a washing battery, wherein at least one of the batteries comprises a plurality of stages.Type: GrantFiled: February 21, 2002Date of Patent: November 18, 2008Assignee: Bromine Compounds LimitedInventors: Baruch Grinbaum, Leni Kogan, Eli Barnea, Gideon Harel, Rafael Semiat, Samuel Wahrmann
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Patent number: 7449120Abstract: A process for killing microorganisms and controlling biofouling in high chlorine demand waters comprises mixing two components, one of which is an oxidant and the other an ammonium salt, and adding the mixture immediately to the aqueous system to be treated.Type: GrantFiled: September 11, 2007Date of Patent: November 11, 2008Assignee: Bromine Compounds LimitedInventor: Ayala Barak
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Patent number: 7285224Abstract: A process for killing microorganisms and controlling biofouling in high chlorine demand waters comprises mixing two components, one of which is an oxidant and the other an ammonium salt, and adding the mixture immediately to the aqueous system to be treated.Type: GrantFiled: December 29, 2004Date of Patent: October 23, 2007Assignee: Bromine Compounds LimitedInventor: Ayala Barak
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Patent number: 7067063Abstract: A process for killing microorganisms and controlling biofouling in high chlorine demand waters comprises mixing two components, one of which is an oxidant and the other an ammonium salt, and adding the mixture immediately to the aqueous system to be treated.Type: GrantFiled: August 23, 2002Date of Patent: June 27, 2006Assignee: Bromine Compounds LimitedInventor: Ayala Barak
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Patent number: 6410803Abstract: A method for the preparation of p-fluorophenol by the alkaline hydrolysis of p-bromofluorobenzene in the presence of a copper-containing catalyst at an elevated temperature under pressure, the alkaline agent being a strong base, characterized in that said p-bromofluorobenzene, copper-containing catalyst and strong base are contacted with water where at least the base is gradually added to the reaction zone at an essentially uniform flow rate such that the addition of the base lasts at least the time required to complete the reaction in a batch operation, and less than 12 hours, and the molar ratio of the base is between 1.8 to 3 with respect to said p-bromofluorobenzene.Type: GrantFiled: January 5, 2000Date of Patent: June 25, 2002Assignee: Bromine Compounds LimitedInventor: Michel Adda
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Patent number: 5846914Abstract: A process for the treatment of oil wells having a high content of "acid gases", comprises circulating through or pumping into the well a slurry comprising a water-soluble, solid salt and a saline solution, which slurry does not react with the "acid gases" and which has a density of more than 13 and preferably of at least 14 lb/gal.Type: GrantFiled: January 11, 1995Date of Patent: December 8, 1998Assignee: Bromine Compounds LimitedInventors: Nahum Phillip Finkelstein, Stephen Harry Garnett, Samuel Wajc, John Metcalfe
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Patent number: 5679736Abstract: Novel fire retardant compounds are disclosed, which are poly-halogenated TMPI and MPI compounds containing three or more halogen atoms per molecule. A process for the preparation of these compounds and polymeric compositions containing them are also described.Type: GrantFiled: May 17, 1993Date of Patent: October 21, 1997Assignee: Bromine Compounds LimitedInventor: Leonard Shorr
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Patent number: 5496955Abstract: D-histidine and its derivatives are manufactured from L-histidine, by mixing L-histidine and tartaric acid with an aldehyde in acetic acid medium and thereafter precipitating D-histidine tartrate from the reaction mass. Pure D-histidine can then be recovered from the crude D-histidine tartrate.Type: GrantFiled: September 16, 1993Date of Patent: March 5, 1996Assignee: Bromine Compounds LimitedInventors: Yigal Becker, Yonit Assaf-Biran, Youval Shvo
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Patent number: 5294416Abstract: In a process for the preparation and the isolation of p-hydroxybenzonitrile (HBN), in which a p-halogenated phenol is reacted with cuprous cyanide in a suitable solvent, the reaction mixture obtained after the reaction of the p-halogenated phenol with cuprous cyanide has been substantially completed is contacted with an aqueous solution of a bromide salt and, optionally, an organic diluent, the aqueous and organic phases are separated, HBN is distilled out from the organic phase, an alkali metal cyanide is added to the aqueous phase and CuCN is filtered off from the resulting aqueous phase.Type: GrantFiled: September 11, 1992Date of Patent: March 15, 1994Assignee: Bromine Compounds LimitedInventors: Abram Becker, Hyman Stollar
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Patent number: 5239021Abstract: Flame retarded plastic composition are described, comprising a polycarbonate and a flame-retardant additive selected from pentabromobenzyl-monoacrylate, tribromostyrene and tribromophenyl maleimide, and their mixtures. The flame-retardant polycarbonates so obtained retain excellent transparency.Type: GrantFiled: August 18, 1992Date of Patent: August 24, 1993Assignee: Bromine Compounds LimitedInventors: Michael Peled, Meir Manor
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Patent number: 5225573Abstract: Tetrabromophthalic anhydride and the corresponding free acid are propared by oxidizing in the liquid phase a compound of the formula ##STR1## each of A and A' is independently selected from oxygen, OH or acetoxy; each of R and R' is independently selected from H, OH, alkyl, alkylidene or oxygen;x is 0 or 1; y is 3-x; and R.sub.y and R'.sub.y may together form a closed alicyclic or heterocyclic ring structure.Mixtures of two or more compounds of formula (I), optionally in the presence of an oxidation catalyst, can also be employed as the starting material.Type: GrantFiled: December 10, 1991Date of Patent: July 6, 1993Assignee: Bromine Compounds LimitedInventors: Leonard Shorr, Michael Peled
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Patent number: 5187296Abstract: A process for the assymetric cyanohydrination of m- phenoxybenzaldehyde with HCN, using a catalytically effective amount of enantiomeric cyclo(phenylalanylhistidine) absorbed on a solid support comprising a nonionic polymer resin is described.Type: GrantFiled: July 17, 1991Date of Patent: February 16, 1993Assignee: Bromine Compounds LimitedInventors: Yigal Becker, Asher Elgavi, Youval Shvo
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Patent number: 5169866Abstract: Seed potatoes are fogged with a composition comprising 2,2-dibromo-3-nitrilopropionamide. Control of pathogens on potatoes is obtained with relatively low amounts of active material.Type: GrantFiled: June 11, 1991Date of Patent: December 8, 1992Assignee: Bromine Compounds LimitedInventor: Ayala Barak
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Patent number: 5169972Abstract: In a process for the preparation and the isolation of p-hydroxybenzonitrile (HBN), in which a p-halogenated phenol is reacted with cuprous cyanide in a suitable solvent, the reaction mixture obtained after the reaction of the p-halogenated phenol with cuprous cyanide has been substantially completed is contacted with an aqueous solution of a bromide salt and, optionally, an organic diluent, the aqueous and organic phases are separated, HBN is distilled out from the organic phase, an alkali metal cyanide is added to the aqueous phase and CuCN is filtered off from the resulting aqueous phase.Type: GrantFiled: December 3, 1990Date of Patent: December 8, 1992Assignee: Bromine Compounds LimitedInventors: Abram Becker, Hyman Stollar
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Patent number: 5118877Abstract: In a process for the preparation of mixtures of 2,3-dimethylphenol and 3,4-dimethylphenol a mixture of 2,3-dimethyl-bromobenzene and 3,4-dimethyl-bromobenzene is hydrolized in an aqueous alkaline solution in the presence of a copper compound catalyst of the formula:Cu.sub.(n) R.sub.(m)R represents --O or --OH or a residue of an inorganic or of an organic acid;n is 1 or 2; andm is 0, 1 or 2;the reaction being carried out at a temperature in the range between 200.degree. and 300.degree. C.Type: GrantFiled: January 10, 1991Date of Patent: June 2, 1992Assignee: Bromine Compounds LimitedInventors: Jakob Oren, Michael Zviely, Joshua Hermolin