Defoaming agents devoid of emulsifiers, method for producing said agents and use thereof
    5.
    发明申请
    Defoaming agents devoid of emulsifiers, method for producing said agents and use thereof 审中-公开
    不含乳化剂的消泡剂,生产所述试剂的方法及其用途

    公开(公告)号:US20060276554A1

    公开(公告)日:2006-12-07

    申请号:US10570154

    申请日:2004-08-27

    IPC分类号: B01D17/05

    CPC分类号: B01D19/0422 B01D19/0404

    摘要: Emulsifier-free antifoams are obtainable by mixing a) from 80 to 99% by weight of at least one finely divided, virtually water-insoluble, inert solid with b) from 1 to 20% by weight of at least one hydrophobic, organic compound which has an antifoam action and is solid at room temperature in the absence of a solvent in a shear gradient such that the particle size of the compounds (b) which have an antifoam action is reduced to a mean particle size of from 0.5 to 15 μm, emulsifier-free oil-in-water dispersions of mixtures of (a) and (b) are prepared by mixing the component (a) in an amount of from 80 to 99% by weight with the compounds of component (b) in an amount of from 1 to 20% by weight in the absence of emulsifiers in an extruder or kneader in a manner such that the mean particle size of the component (b) in the mixture is brought to 0.5 to 15 μm, at up to 100° C., and emulsifying the mixture in water, and the oil-in-water dispersions thus obtainable are used as antifoams and/or deaerators for aqueous, disperse or nondisperse liquids, in particular as antifoams and/or deaerators in the paper industry, in the food industry and in wastewater treatment plants.

    摘要翻译: 不含无乳化剂的消泡剂可通过将a)80至99重量%的至少一种细分的,实际上不溶于水的惰性固体与b)1至20重量%的至少一种疏水性有机化合物 具有消泡作用,并且在不存在溶剂的剪切梯度的情况下在室温下是固体,使得具有消泡作用的化合物(b)的粒度降低至0.5至15μm的平均粒度, (a)和(b)的混合物的无乳化剂的水包油分散体通过将组分(a)以80至99重量%的量与组分(b)的化合物的量以 在挤出机或捏合机中,在不存在乳化剂的情况下为1至20重量%,使混合物中组分(b)的平均粒度达到0.5至15μm,在高达100℃ 并将混合物乳化在水中,并且由此获得的水包油分散体用作消泡剂和/或 用于水性,分散或非分散液体的脱气器,特别是在造纸工业,食品工业和废水处理厂中的消泡剂和/或脱气剂。

    Aqueous alkylketene dimer dispersions
    8.
    发明授权
    Aqueous alkylketene dimer dispersions 有权
    水性烷基烯酮二聚体分散体

    公开(公告)号:US08097124B2

    公开(公告)日:2012-01-17

    申请号:US12303253

    申请日:2007-06-01

    IPC分类号: D21F11/00

    摘要: Aqueous alkyl ketene dimer dispersions which comprise at least 15% by weight of an alkyl ketene dimer and at least one water-soluble cationic starch, aluminum sulfate and at least one condensate of naphthalenesulfonic acid and formaldehyde or lignin sulfonic acid or in each case salts thereof, the dispersions comprising, based in each case on alkyl ketene dimer, from 2 to 50% by weight of aluminum sulfate, and in which the dispersions additionally comprise from 0.1 to 5% by weight of a saturated carboxylic acid having 1 to 10 carbon atoms, benzenesulfonic acid, p-toluenesulfonic acid and/or a mineral acid at an aluminum sulfate content of from 2 to 15% by weight, and the use of the dispersions as engine size and surface size for paper and paper products.

    摘要翻译: 包含烷基烯酮二聚体和至少一种水溶性阳离子淀粉,硫酸铝和至少一种萘磺酸和甲醛或木质素磺酸的缩合物的至少15重量%的烷基乙烯酮二聚物分散体,或者在其每种情况下都是其盐 ,基于烷基烯酮二聚体,基于烷基烯酮二聚体的分散体含有2-50重量%的硫酸铝,其中分散体另外包含0.1-5重量%的具有1-10个碳原子的饱和羧酸 ,苯磺酸,对甲苯磺酸和/或无机酸,硫酸铝含量为2〜15重量%,分散体用作纸和纸制品的发动机尺寸和表面尺寸。

    AQUEOUS ALKYLKETENE DIMER DISPERSIONS
    9.
    发明申请
    AQUEOUS ALKYLKETENE DIMER DISPERSIONS 有权
    水性阿尔茨海默分散剂

    公开(公告)号:US20090139677A1

    公开(公告)日:2009-06-04

    申请号:US12303253

    申请日:2007-06-01

    IPC分类号: D21H17/28 C09K3/00

    摘要: Aqueous alkyl ketene dimer dispersions which comprise at least 15% by weight of an alkyl ketene dimer and at least one water-soluble cationic starch, aluminum sulfate and at least one condensate of naphthalenesulfonic acid and formaldehyde or lignin sulfonic acid or in each case salts thereof, the dispersions comprising, based in each case on alkyl ketene dimer, from 2 to 50% by weight of aluminum sulfate, and in which the dispersions additionally comprise from 0.1 to 5% by weight of a saturated carboxylic acid having 1 to 10 carbon atoms, benzenesulfonic acid, p-toluenesulfonic acid and/or a mineral acid at an aluminum sulfate content of from 2 to 15% by weight, and the use of the dispersions as engine size and surface size for paper and paper products.

    摘要翻译: 包含烷基烯酮二聚体和至少一种水溶性阳离子淀粉,硫酸铝和至少一种萘磺酸和甲醛或木质素磺酸的缩合物的至少15重量%的烷基乙烯酮二聚物分散体,或者在其每种情况下都是其盐 ,基于烷基烯酮二聚体,基于烷基烯酮二聚体的分散体含有2-50重量%的硫酸铝,其中分散体另外包含0.1-5重量%的具有1-10个碳原子的饱和羧酸 ,苯磺酸,对甲苯磺酸和/或无机酸,硫酸铝含量为2〜15重量%,分散体用作纸和纸制品的发动机尺寸和表面尺寸。

    Switched mode converter and methods of controlling switched mode converters
    10.
    发明授权
    Switched mode converter and methods of controlling switched mode converters 有权
    开关模式转换器和控制开关模式转换器的方法

    公开(公告)号:US09263955B2

    公开(公告)日:2016-02-16

    申请号:US14342724

    申请日:2012-09-03

    摘要: A method is disclosed of controlling a switched mode converter comprising a switch and for providing power to device having a load, comprising: in response to the load exceeding a first threshold, operating in a first mode, being a CCM; in response to the load exceeding a second threshold and not exceeding the first threshold, operating in second mode, being a BCM without valley skipping wherein the switching frequency increases with decreasing load; in response to the load exceeding a third threshold and not exceeding the second threshold, operating in a third mode, being a BCM with valley skipping, wherein the switching frequency depends on the load and the number of valleys skipped and is between a fixed upper and a lower switching frequency limit; and in response to the load not exceeding the third threshold, operating in a fourth mode, being a BCM with valley skipping, wherein the switching frequency depends on at least the load, and is between an upper and a lower switching frequency limit wherein the upper switching frequency limit decreases with decreasing load. A switched mode converter controlled by such a method is also disclosed.

    摘要翻译: 公开了一种控制包括开关并用于向具有负载的装置提供电力的开关模式转换器的方法,包括:响应于所述负载超过第一阈值,以第一模式操作,为CCM; 响应于所述负载超过第二阈值且不超过所述第一阈值,在第二模式下操作,所述BCM不具有谷跳跃,其中所述开关频率随负载减小而增加; 响应于超过第三阈值并且不超过第二阈值的负载,以第三模式操作,作为具有谷跳跃的BCM,其中开关频率取决于跳过的负载和谷数,并且在固定的上限和 低开关频率限制; 并且响应于不超过第三阈值的负载,以第四模式操作,作为具有谷跳跃的BCM,其中开关频率至少取决于负载,并且处于上和下开关频率极限之间,其中上部 开关频率限制随负载减小而减小。 还公开了通过这种方法控制的开关模式转换器。