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公开(公告)号：US06429181B2
公开(公告)日：2002-08-06
申请号：US09774254
申请日：2001-01-30
IPC分类号： C11D7704
CPC分类号： D21H21/04 , C02F1/76 , C02F2103/003 , C02F2103/28
摘要： The inventors have discovered that partially halogenated hydantoins exhibit superior antimicrobial efficacy and decreased performance additive decomposition rates than fully halogenated hydantoins, such as dichlorodimethyl hydantoin (DCDMH). Partially halogenated hydantoins are solutions containing monochlorohydantoin and, optionally, dihalogenated hydantoin or non-halogenated hydantoin. The present invention is a method of reducing slime in a circulating water slurry comprising organic matter and one or more performance additives, such as optical brighteners, while minimizing decomposition of the performance additives. The method comprises adding one or more partially halogenated hydantoins, such as Cl1.1-chlorodimethyl hydantoin, to the slurry. The concentration of partially halogenated hydantoin maintained in the slurry generally ranges from about 0.01 to about 50 ppm (expressed as Cl2). This method is particularly useful for circulating water slurries in paper processing.
摘要翻译： 本发明人已经发现，部分卤代乙内酰脲显示出比完全卤化的乙内酰脲如二氯二甲基乙内酰脲（DCDMH）更好的抗菌效力和降低的性能添加剂分解速率。 部分卤化的乙内酰脲是含有一氯乙内酰脲和任选的二卤代乙内酰脲或非卤代乙内酰脲的溶液。 本发明是一种减少包含有机物质和一种或多种性能添加剂如荧光增白剂的循环水浆液中的粘液的方法，同时最小化性能添加剂的分解。 该方法包括向浆液中加入一种或多种部分卤化的乙内酰脲，例如Cl1.1-氯二甲基乙内酰脲。 维持在浆料中的部分卤化乙内酰脲的浓度通常在约0.01至约50ppm的范围内（表示为Cl 2）。 该方法对于纸张处理中的循环水浆料特别有用。
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公开(公告)号：US20120114632A1
公开(公告)日：2012-05-10
申请号：US13384923
申请日：2010-07-26
CPC分类号： C02F1/50 , C02F1/76 , C02F2303/08 , C02F2303/20 , Y02W10/37
摘要： Disclosed are compositions for stabilizing a source of active halogen in aqueous solution. The compositions comprise (i) at least one substituted N-hydrogen compound, such as 5,5-dimethylhydantoin, and (ii) at least one additional nitrogen compound selected from ammonia, ammonium salts, and nitrogen compounds containing no carbon-hydrogen bonds, the molar ratio of (i) and (ii) being in the range of 50:1 to 0.02:1. Active halogen-containing aqueous solutions stabilized by the above compositions are particularly useful for controlling microbial and planktonic growth in aqueous systems such as process liquids in the pulping or papermaking industry. The compositions are also useful in reducing the corrosivity of halogen-containing solutions.
摘要翻译： 公开了用于在水溶液中稳定活性卤素源的组合物。 组合物包含（i）至少一种取代的N-氢化合物，例如5,5-二甲基乙内酰脲，和（ii）至少一种选自不含碳 - 氢键的氨，铵盐和氮化合物的另外的氮化合物， （i）和（ii）的摩尔比在50:1至0.02:1的范围内。 通过上述组合物稳定的活性含卤素水溶液特别可用于控制水性体系如制浆或造纸工业中的工艺液体中的微生物和浮游生长。 该组合物也可用于降低含卤素溶液的腐蚀性。
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公开(公告)号：US08933244B2
公开(公告)日：2015-01-13
申请号：US13384923
申请日：2010-07-26
IPC分类号： A61K31/433 , C07D233/32 , C02F1/50 , C02F1/76
CPC分类号： C02F1/50 , C02F1/76 , C02F2303/08 , C02F2303/20 , Y02W10/37
摘要： Disclosed are compositions for stabilizing a source of active halogen in aqueous solution. The compositions comprise (i) at least one substituted N-hydrogen compound, such as 5,5-dimethylhydantoin, and (ii) at least one additional nitrogen compound selected from ammonia, ammonium salts, and nitrogen compounds containing no carbon-hydrogen bonds, the molar ratio of (i) and (ii) being in the range of 50:1 to 0.02:1. Active halogen-containing aqueous solutions stabilized by the above compositions are particularly useful for controlling microbial and planktonic growth in aqueous systems such as process liquids in the pulping or papermaking industry. The compositions are also useful in reducing the corrosivity of halogen-containing solutions.
摘要翻译： 公开了用于在水溶液中稳定活性卤素源的组合物。 组合物包含（i）至少一种取代的N-氢化合物，例如5,5-二甲基乙内酰脲，和（ii）至少一种选自不含碳 - 氢键的氨，铵盐和氮化合物的另外的氮化合物， （i）和（ii）的摩尔比在50:1至0.02:1的范围内。 通过上述组合物稳定的活性含卤素水溶液特别可用于控制水性体系如制浆或造纸工业中的工艺液体中的微生物和浮游生长。 该组合物也可用于降低含卤素溶液的腐蚀性。
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