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    Microbiological Control in Aqueous Systems
    37.
    发明申请
    Microbiological Control in Aqueous Systems 有权
    水系统微生物控制

    公开(公告)号：US20090159519A1

    公开(公告)日：2009-06-25

    申请号：US12398260

    申请日：2009-03-05

    申请人： Jonathan N. Howarth ,  Christopher J. Nalepa ,  Michael J. Sanders ,  David L. Shelton

    发明人： Jonathan N. Howarth ,  Christopher J. Nalepa ,  Michael J. Sanders ,  David L. Shelton

    IPC分类号： C02F1/50 ,  C02F101/00

    CPC分类号： C02F1/50 ,  C02F1/76 ,  C02F1/766 ,  C02F2303/20

    摘要： Microbiological control is achieved by continuously and inexpensively dosing water in contact with biofilm, or that comes into contact with biofilm, using a highly effective biocide that provides very effective microbiocidal control of planktonic microorganisms and of biofilm species, even where the biofilm infestations have been in existence for long periods of time and thus have encased themselves in a substantial quantity of slimy defensive polysaccharide layers or films. In addition, the biocide used makes possible significant reduction in copper and/or iron surfaces in contact with the water as compared to N,N′-bromochloro-5,5-dimethyl hydantoin. Still other advantages are made possible by the described technology.

    摘要翻译： 微生物控制是通过使用高效杀生物剂连续低成本地接触生物膜或与生物膜接触的水来实现的，即使在生物膜侵袭已经进入生物膜的情况下，也能提供对浮游微生物和生物膜物种的非常有效的杀微生物控制 存在很长一段时间，因此已经包含了大量的防粘多糖层或薄膜。 此外，与N，N'-溴氯-5,5-二甲基乙内酰脲相比，所用的杀生物剂使得与水接触的铜和/或铁表面可能显着减少。 所描述的技术还有其他优点。

    Methods for microbiological control in aqueous systems
    38.
    发明授权
    Methods for microbiological control in aqueous systems 有权
    水系统微生物控制方法

    公开(公告)号：US06641828B1

    公开(公告)日：2003-11-04

    申请号：US09775516

    申请日：2001-02-02

    申请人： Jonathan N. Howarth ,  Christopher J. Nalepa ,  Michael J. Sanders

    发明人： Jonathan N. Howarth ,  Christopher J. Nalepa ,  Michael J. Sanders

    IPC分类号： A01N2510

    CPC分类号： C02F1/50 ,  A01N43/50 ,  Y02W10/37 ,  A01N25/34 ,  A01N25/12 ,  A01N25/10 ,  A01N2300/00

    摘要： 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 C1-4 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.

    摘要翻译： 通过向水性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，其中一个或多个1,3-二溴-5,5-二烷基乙内酰脲通过将水介质中的微生物控制和/或根除或减少与这种介质接触的表面上的生物膜来实现 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 “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'的那些释放在该介质中的”游离氯“的量释放， 溴氯-5,5-二甲基乙内酰脲。

    Methods for microbiological control in aqueous systems
    39.
    发明授权
    Methods for microbiological control in aqueous systems 失效
    水系统微生物控制方法

    公开(公告)号：US06565868B1

    公开(公告)日：2003-05-20

    申请号：US09484938

    申请日：2000-01-18

    申请人： Jonathan N. Howarth ,  Christopher J. Nalepa ,  Michael J. Sanders ,  David L. Shelton

    发明人： Jonathan N. Howarth ,  Christopher J. Nalepa ,  Michael J. Sanders ,  David L. Shelton

    IPC分类号： A01N2534

    CPC分类号： C02F1/50 ,  A01N43/50 ,  Y02W10/37 ,  A01N25/34 ,  A01N25/12 ,  A01N25/10 ,  A01N2300/00

    摘要： Microbiological control in water systems is achieved with an amount,of 1,3-dibromo-5,5-dimethylhydantoin that is less than the amount of N,N′-bromochloro-5,5-dimethylhydantoin required to achieve the same degree of microbiological control. The methods of combating Escherichia coli and/or Enterococcus faecium in an aqueous medium, and biofilms such as formed by Pseudomonas aeruginosa on surfaces contacted by the aqueous medium, involve introducing into the medium a biocidally effective amount of 1,3-dibromo-5,5-dimethylhydantoin. A microbiological control agent for use in water in accordance with U.S. Environmental Protection Agency regulations is purveyed in containers of a water control agent comprising 1,3-dibromo-5,5-dimethylhydantoin, which containers bear a label having thereon dosage levels pursuant to requirements promulgated by the U.S. Environmental Protection Agency. The 1,3-dibromo-5,5-dimethylhydantoin is used or purveyed either as a product having a large average particle size (e.g., 175 microns or more) or in the form of a compacted product. The compacted product can be formed without using a binder where the average particle size of the 1,3-dibromo-5,5-dimethylhydantoin is about 175 microns or more. Alternatively, the compacted product can be formed using a micronized synthetic polyolefin-based hydrocarbon wax and/or a micronized synthetic polyfluorocarbon wax as a binder, provided the wax is compatible with the 1,3-dibromo-5,5-dimethylhydantoin. In this case, the average particle size can be in the range of about 20-600 microns. Similarly, the compacted product can be a product formed from 1,3-dibromo-5,5-dimethylhydantoin having an average particle size of at least 175 microns, using an amount of a saturated, normally solid, fatty amide as the binder.

    摘要翻译： 水体系中的微生物控制是用一定量的1,3-二溴-5,5-二甲基乙内酰脲来实现的，其量小于实现相同程度的微生物所需的N，N'-溴氯-5,5-二甲基乙内酰脲的量 控制。 在水性介质中防治大肠杆菌和/或屎肠球菌的方法以及由含水介质接触的表面上的铜绿假单胞菌形成的生物膜包括将生物有效量的1,3-二溴-5- 5-二甲基乙内酰脲。 根据美国环境保护局规定在水中使用的微生物控制剂在含有1,3-二溴-5,5-二甲基乙内酰脲的水控制剂的容器中提供，该容器具有根据要求具有其剂量水平的标签 由美国环保署颁布。 1,3-二溴-5,5-二甲基乙内酰脲作为具有大平均粒度（例如175微米或更大）的产品或以压制产品的形式使用或提供。 可以不使用1,3-二溴-5,5-二甲基乙内酰脲的平均粒径为约175微米或更大的粘合剂来形成压制产品。 或者，如果蜡与1,3-二溴-5,5-二甲基乙内酰脲相容，则可使用微粉化的合成聚烯烃基烃蜡和/或微粉化合成多氟碳蜡作为粘合剂来形成压制产品。 在这种情况下，平均粒度可以在约20-600微米的范围内。 类似地，压实产品可以是使用一定量的饱和的，通常为固体的脂肪酰胺作为粘合剂，由平均粒度至少为175微米的1,3-二溴-5,5-二甲基乙内酰脲形成的产品。

    Synergistic combinations of oxidizing agents and alkylamines for biofilm control and deactivation
    40.
    发明授权
    Synergistic combinations of oxidizing agents and alkylamines for biofilm control and deactivation 失效
    氧化剂和烷基胺的协同组合用于生物膜控制和失活

    公开(公告)号：US06419838B1

    公开(公告)日：2002-07-16

    申请号：US09523614

    申请日：2000-03-13

    申请人： Christopher J. Nalepa

    发明人： Christopher J. Nalepa

    IPC分类号： C02F172

    CPC分类号： C02F1/72 ,  A01N33/04 ,  C02F1/50 ,  A01N33/12 ,  A01N59/00 ,  A01N2300/00

    摘要： Aqueous industrial, recreational, and/or drilling systems comprise a synergistic combination of an oxidizing agent and an alkylamine. In the synergistic combination, the MBEC of the oxidizing agent preferably is about 25%, more preferably about 50% reduced compared to the MBEC of the oxidizing agent in the absence of the alkylamine. Similarly, the MBEC of the alkylamine in the synergistic combination is about 20%, preferably about 10%, more preferably about 1%, and most preferably about 0.5% of the MBEC of the alkylamine in the absence of the oxidizing agent. Preferred alkylamines are primary fatty alkylamines, most preferably octylamine. Preferred oxidizing agents are HOCl and HOBr. The oxidizing agent preferably is maintained at a concentration sufficient to provide static control over biofilm formation with periodic addition of the alkylamine.

    摘要翻译： 水性工业，娱乐和/或钻井系统包括氧化剂和烷基胺的协同组合。 在协同组合中，与不存在烷基胺的氧化剂的MBEC相比，氧化剂的MBEC优选为约25％，更优选约50％。 类似地，在不存在氧化剂的情况下，协同组合中的烷基胺的MBEC为烷基胺的MBEC的约20％，优选约10％，更优选约1％，最优选约0.5％。 优选的烷基胺是伯脂肪烷基胺，最优选辛胺。 优选的氧化剂是HOCl和HOBr。 氧化剂优选维持在足以提供对生物膜形成的静态控制的浓度，同时定期加入烷基胺。