Process for preparing vinylpyrrolidone polymer powder
    39.
    发明公开
    Process for preparing vinylpyrrolidone polymer powder 有权
    Verfahren zur Herstellung von Polyvinyl pyrrolidon-Pulver

    公开(公告)号:EP1437375A1

    公开(公告)日:2004-07-14

    申请号:EP04000149.7

    申请日:2004-01-07

    发明人: Fujise, Keiichi

    IPC分类号: C08J3/12 C08F6/12

    摘要: The present invention provides a process for preparing vinylpyrrolidone polymer powder, which has high bulk density and favorable powder flowability and can be handled with ease. Specifically, the present invention relates to a process for preparing vinylpyrrolidone polymer powder, which comprises spraying an aqueous solution of a vinylpyrrolidone polymer into a drying tower using a disc atomizer and then drying.

    摘要翻译: 乙烯基吡咯烷酮聚合物粉末通过使用盘式雾化器在干燥塔中喷雾乙烯基吡咯烷酮聚合物的水溶液然后干燥来制备。 盘式雾化器的盘的圆周速度为至少4500m / min。 引入干燥塔的热空气的温度为165-300℃。 从干燥塔排出的温度为100-140℃。