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    • 7. 发明申请
    • METHODS FOR MICROBIOLOGICAL CONTROL IN AQUEOUS SYSTEMS
    • 水质系统微生物控制方法
    • WO2005039293A1
    • 2005-05-06
    • PCT/US2004/031271
    • 2004-09-23
    • ALBEMARLE CORPORATIONHOWARTH, Jonathan, N.NALEPA, Christopher, J.SANDERS, Michael, J.
    • HOWARTH, Jonathan, N.NALEPA, Christopher, J.SANDERS, Michael, J.
    • A01N43/50
    • A01N43/50A01N59/00C02F1/50C02F1/766C02F2103/023C02F2103/42A01N25/34A01N25/14A01N25/12A01N25/00A01N2300/00
    • Microbiological control in aqueous media and/or eradication or reduction of biofilm on a surface in contact with such media is achieved by introducing into the aqueous medium a microbiocidally effective quantity of one or more 1, 3-dibromo-5, 5-dialkylhydantoins where one of the alkyls is methyl and the other is a C 1-4 alkyl, wherein (i) the molar quantity of 1,3-dibromo-5,5-dialkylhydantoin introduced is less than the molar quantity of N,N’-bromochloro-5,5-dimethylhydantoin that would be required to effect the same degree of microbiological control in that medium, (ii) the molar quantity of the 1,3-dibromo-5,5-dialkylhydantoin introduced releases an amount of “free chlorine” that is greater than the amount of “free chlorine” that would be released in that medium by an equimolar quantity of N,N’-bromochloro-5,5-dimethylhydantoin, and (iii) the amount of “free chlorine” released by the quantity of the 1,3-dibromo-5,5-dialkylhydantoin introduced is greater than the amount of “free chlorine” that could be predicted to be released by that quantity of 1,3-dibromo-5,5-dialkylhydantoin on the basis of the amount of “free chlorine” that would be released in that medium by an equimolar quantity of N,N’-bromochloro-5,5-dimethylhydantoin.
    • 通过向含水介质中引入微生物有效量的一种或多种1,3-二溴-5,5-二烷基乙内酰脲来实现水介质中的微生物控制和/或消除或减少与这种介质接触的表面上的生物膜,其中一个 的烷基是甲基,另一个是C 1-4烷基,其中(i)引入的1,3-二溴-5,5-二烷基乙内酰脲的摩尔量小于N,N'-溴氯-5 将要求在该培养基中进行相同程度的微生物控制的5-二甲基乙内酰脲,(ii)引入的1,3-二溴-5,5-二烷基乙内酰脲的摩尔量会释放一定量的“游离氯” 大于通过等摩尔量的N,N'-溴氯-5,5-二甲基乙内酰脲在该介质中释放的“游离氯”的量,以及(iii)由游离氯释放的量的“游离氯” 引入的1,3-二溴-5,5-二烷基乙内酰脲大于“游离氯”的量 ne“,可以预测由该量的1,3-二溴-5,5-二烷基乙内酰脲以基于等摩尔量的N,N在该介质中释放的”游离氯“的量释放 “溴氯-5,5-二甲基。