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    • 2. 发明申请
    • METHOD FOR THE PRODUCTION OF WATER ABSORBING POLYMERS
    • 生产吸水聚合物的方法
    • US20140047730A1
    • 2014-02-20
    • US14063129
    • 2013-10-25
    • BASF SE
    • Matthias WeismantelStefan BruhnsDominicus van Esbroeck
    • B01J20/30
    • B01J20/30C08F6/008C08F6/10F26B17/04F26B21/06C08L33/02
    • A process for producing a water-absorbing polymer by polymerizing a monomer solution and drying the resulting hydrogel by means of a heated gas stream comprises effecting the drying in two or more temperature zones, and/or the gas stream is flowed against the hydrogel upwardly in the upstream sector of the belt dryer and downwardly in the downstream sector of the belt dryer, the direction of flow being reversed at a water content of 15% to 45% by weight for the hydrogel, and/or the hydrogel layer is flowed against in a belt dryer upwardly to some extent at least, the gas velocity being 5% to 30% of the gas velocity required to lift the hydrogel off the belt, also apparatus for carrying out the process and use of the water-absorbing polymers produced by the process to produce hygiene articles.
    • 通过聚合单体溶液并通过加热的气流干燥所得的水凝胶来生产吸水性聚合物的方法包括在两个或多个温度区域进行干燥和/或将气流向上流过水凝胶 带式干燥器的上游部分,并且在带式干燥器的下游部分中向下流动,水凝胶的水含量为15%至45%(重量),并且/或水凝胶层相对于 带式干燥机至少在一定程度上至少具有气体速度为水凝胶离开带所需的气体速度的5%至30%,也是用于实施由 生产卫生用品的过程。