A - Human Necessities – 01 – N
Patent
A - Human Necessities
01
N
A01N 59/00 (2006.01) A01N 25/22 (2006.01) A01P 1/00 (2006.01) C02F 1/50 (2006.01) C02F 1/76 (2006.01)
Patent
CA 2333059
Described is a process of producing a concentrated liquid biocide formulation. Mixed together are (a) bromine chloride or bromine 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 solution is at least about 100,000 ppm (wt/wt), and (ii) the atom ratio of nitrogen to active bromine from (a) and (b) is greater than 1 when bromine is used and is greater than 0.93 when bromine chloride is used. Use of bromine chloride as the source of the active bromine in the process is preferred because in the resulting aqueous compositions, all 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.
L'invention concerne un procédé de production d'une formulation biocide liquide concentrée. On mélange (a) du chlorure de brome ou du brome et (b) une solution aqueuse de sel de métal alcalin d'acide sulfamique possédant un pH d'environ 7, dans certaines proportions, de sorte que (I) la teneur en brome actif de la solution soit d'au moins 100 000 ppm (P/P), et (ii) que le rapport atomique entre l'azote et le brome actif de (a) et (b) soit supérieur à 1 lorsque du brome est utilisé et soit supérieur à 0,93 lorsque du chlorure de brome est utilisé. On préfère utiliser le chlorure de brome comme source de brome actif dans le procédé, car, dans la composition aqueuse résultante, la totalité du brome du chlorure de brome est disponible sous forme de brome actif dans la solution. En d'autres termes, le chlore du chlorure de brome est converti dans le procédé en sel de chlorure de métal alcalin dissous, la totalité du brome libéré formant le brome actif de la composition biocide.
Moore Robert M. Jr.
Nalepa Christopher J.
Albemarle Corporation
Macrae & Co.
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