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    • 35. 发明申请
    • DISPERSING AGENT
    • 分散剂
    • US20130005863A1
    • 2013-01-03
    • US13518133
    • 2011-01-17
    • Manfred BichlerSilke FlakusChristoph Hofheinz
    • Manfred BichlerSilke FlakusChristoph Hofheinz
    • C08L33/06C08L43/02C08L33/24B01D1/18C08K3/34C08K3/22C08K3/30C08L41/00C08K3/20
    • C04B40/0039B01F17/0028C04B28/04C04B40/0042C04B2103/30C04B24/2647C04B24/2694C04B14/06C04B2103/50
    • A preferably pulverulent dispersing agent comprising as the component having a dispersing action the combination of (a) at least one representative of polycarboxylate ethers with a weight content of from 0.1 to 20%, (b) at least one representative of polycarboxylate esters with a weight content of from 0 to 20% and (c) at least one representative of non-charged copolymers with a weight content of from 0.1 to 20%, which is accessible by co-spray drying the individual components and which is suitable for controlling the flowability of aqueous chemical construction suspensions is claimed. By the dispersing agents which form in situ according to the invention, a controllable subsequent dosing of dispersing agent can be achieved without an additional process step. Furthermore, by subsequent dosing with a flow agent, an increased dosing efficiency of a polymer can be achieved, the extent of the dispersing can be controlled in several stages and the duration of the processability of a fresh mortar can be prolonged especially at elevated temperatures by an increasing saponification.
    • 优选粉末分散剂,其包含具有分散作用的组分,组合(a)至少一种代表重量含量为0.1-20%的聚羧酸酯醚,(b)至少一种具有重量的聚羧酸酯的代表 含量为0至20%,和(c)至少一种重量含量为0.1至20%的无电荷共聚物的代表,其可通过共同喷雾干燥各个组分并且适于控制流动性 要求保护水性化学结构悬浮液。 通过根据本发明原位形成的分散剂,可以实现分散剂的可控的后续给药,而无需另外的工艺步骤。 此外,通过随后用流动剂给药,可以实现聚合物的增加的剂量效率,可以在几个阶段中控制分散的程度,并且可以延长新鲜研钵的加工性能的持续时间,特别是在高温下通过 增加皂化。