CONCENTRATED AQUEOUS BROMINE SOLUTIONS AND THEIR PREPARATION
    4.
    发明公开
    CONCENTRATED AQUEOUS BROMINE SOLUTIONS AND THEIR PREPARATION 有权
    浓缩的水溴解决方案和生产

    公开(公告)号:EP1343376A2

    公开(公告)日:2003-09-17

    申请号:EP01989936.8

    申请日:2001-11-08

    摘要: Concentrated liquid biocide compositions are produced by: A) feeding (a) bromine atoms and chlorine atoms in the form of (i) one or more of BrCl, (ii) Br2, and (iii) Cl2 into (b) water containing sulfamate anions, or feeding each of (a) and (b) into a reaction vessel, such that the numerical ratio of the total number of bromine atoms fed to the total number of chlorine atoms fed is in the range of 0.7:1 to 1.7:1; and B) providing enough alkali metal base in the mixture being formed in A) to keep the pH of such mixture in the range of 7-11 during all or substantially all of time feeding in A) is occurring, the amounts of (a) and (b) used being amounts that form an active-bromine-containing solution in which (i) the active bromine content is 50,000 ppm or more, and (ii) the atom ratio of nitrogen to active bromine originating from (a) and (b) is greater than about 0.93; and wherein if any sulfate is present in the solution as formed, the molar ratio of sulfate to sulfamate in the solution is less than about 0.2.

    BIOCIDAL APPLICATIONS OF CONCENTRATED AQUEOUS BROMINE CHLORIDE SOLUTIONS
    5.
    发明授权
    BIOCIDAL APPLICATIONS OF CONCENTRATED AQUEOUS BROMINE CHLORIDE SOLUTIONS 有权
    浓缩的水性氯化溴解的生物灭活应用

    公开(公告)号:EP1217892B1

    公开(公告)日:2006-03-15

    申请号:EP00963743.0

    申请日:2000-09-21

    IPC分类号: A01N59/00 A01N25/22 C02F1/76

    摘要: Methods for disinfecting surfaces and for sanitizing bodies of water using a single-feed, bromine-based biocide are described. These methods use concentrated liquid biocide compositions comprising biocidally active bromine as the biocide. Also described is a process of producing the concentrated liquid biocide composition: mixed together are (a) bromine chloride and (b) an aqueous solution of alkali metal salt of sulfamic acid having a pH of at least about 7, in amounts such that (i) the active bromine content of the composition is at least about 100,000 ppm (wt/wt), and (ii) the atom ratio of nitrogen to active bromine in the composition is greater than 0.93. Use of bromine chloride as the source of the active bromine in the process is advantageous because in the resulting aqueous compositions, all of the bromine of the bromine chloride is made available as active bromine in solution. In other words, the chlorine of the bromine chloride is converted in the process to dissolved alkali metal chloride salt, thereby liberating all of the bromine as the active bromine content of the biocidal composition.

    ACTIVE BROMINE CONTAINING BIOCIDAL COMPOSITIONS AND THEIR PREPARATION
    6.
    发明公开
    ACTIVE BROMINE CONTAINING BIOCIDAL COMPOSITIONS AND THEIR PREPARATION 有权
    AKTIVBROM含杀生物组合物及其制备方法

    公开(公告)号:EP1555879A1

    公开(公告)日:2005-07-27

    申请号:EP03776610.2

    申请日:2003-10-28

    IPC分类号: A01N59/00 A01N25/22 A01N59/02

    摘要: Described are highly concentrated liquid biocidal solutions formed in water from (a) specified bromine sources (e.g., BrCl or mixtures of BrCl and Br2) and (b) alkali metal salt of sulfamic acid and/or sulfamic acid and alkali metal base, wherein the solution contains >160,000 ppm of active bromine. Solutions of this type have been found to have greater stability than a commercially-available solution made from the same components containing 148,600 ppm of active bromine. Also described are new, water-soluble, solid state biocidal products formed by removing the water from solutions made in water from (a) and (b) irrespective of the initial concentration of active bromine. Removal of water can be accomplished by flashing or distillation at reduced pressure or preferably by spray drying. Such solid state products are typically in the form of powders or small particles, but can be compacted into larger forms preferably with the aid of one or more suitable binding agents. a combination of any two or all three of (a), (b), and (c).

    BIOCIDAL APPLICATIONS OF CONCENTRATED AQUEOUS BROMINE CHLORIDE SOLUTIONS
    8.
    发明公开
    BIOCIDAL APPLICATIONS OF CONCENTRATED AQUEOUS BROMINE CHLORIDE SOLUTIONS 有权
    浓缩的水性氯化溴解的生物灭活应用

    公开(公告)号:EP1217892A1

    公开(公告)日:2002-07-03

    申请号:EP00963743.0

    申请日:2000-09-21

    IPC分类号: A01N59/00 A01N25/22 C02F1/76

    摘要: Methods for disinfecting surfaces and for sanitizing bodies of water using a single-feed, bromine-based biocide are described. These methods use concentrated liquid biocide compositions comprising biocidally active bromine as the biocide. Also described is a process of producing the concentrated liquid biocide composition: mixed together are (a) bromine chloride and (b) an aqueous solution of alkali metal salt of sulfamic acid having a pH of at least about 7, in amounts such that (i) the active bromine content of the composition is at least about 100,000 ppm (wt/wt), and (ii) the atom ratio of nitrogen to active bromine in the composition is greater than 0.93. Use of bromine chloride as the source of the active bromine in the process is advantageous because in the resulting aqueous compositions, all of the bromine of the bromine chloride is made available as active bromine in solution. In other words, the chlorine of the bromine chloride is converted in the process to dissolved alkali metal chloride salt, thereby liberating all of the bromine as the active bromine content of the biocidal composition.

    CONCENTRATED AQUEOUS BROMINE SOLUTIONS AND THEIR PREPARATION
    10.
    发明授权
    CONCENTRATED AQUEOUS BROMINE SOLUTIONS AND THEIR PREPARATION 有权
    浓缩的水溴解决方案和生产

    公开(公告)号:EP1343376B1

    公开(公告)日:2006-08-16

    申请号:EP01989936.8

    申请日:2001-11-08

    摘要: Concentrated liquid biocide compositions are produced by: A) feeding (a) bromine atoms and chlorine atoms in the form of (i) one or more of BrCl, (ii) Br2, and (iii) Cl2 into (b) water containing sulfamate anions, or feeding each of (a) and (b) into a reaction vessel, such that the numerical ratio of the total number of bromine atoms fed to the total number of chlorine atoms fed is in the range of 0.7:1 to 1.7:1; and B) providing enough alkali metal base in the mixture being formed in A) to keep the pH of such mixture in the range of 7-11 during all or substantially all of time feeding in A) is occurring, the amounts of (a) and (b) used being amounts that form an active-bromine-containing solution in which (i) the active bromine content is 50,000 ppm or more, and (ii) the atom ratio of nitrogen to active bromine originating from (a) and (b) is greater than about 0.93; and wherein if any sulfate is present in the solution as formed, the molar ratio of sulfate to sulfamate in the solution is less than about 0.2.