发明名称 |
VERFAHREN ZUR HERSTELLUNG PULVERFÖRMIGER WASSERLÖSLICHER CELLULOSEDERIVATE UNTER EINSATZ EINES WASSERDAMPF/INERTGAS-GEMISCHES ODER WASSERDAMPF/LUFTGEMISCHES ALS TRANSPORT UND WÄRMETRÄGERGAS |
摘要 |
The present invention relates to a new, particularly economical process for preparing particulate water-soluble cellulose derivatives. The process involves forming a feed composition of swollen and/or dissolved cellulose derivative, and water. The feed composition is contacted with a superheated gas mixture, in a sieve-free high rotational speed gas jet impact mill, and the cellulose derivative of the feed composition is converted into a solid state form of finely particulate particles. The superheated gas mixture, with which the feed composition is contacted, is selected from: (i) a superheated gaseous mixture of steam and an inert gas; and (ii) a superheated gas mixture of steam and air. The superheated gas mixture has a steam content of 40 wt. % to 99 wt. %, based on the total weight of the superheated gas mixture. |
申请公布号 |
AT292161(T) |
申请公布日期 |
2005.04.15 |
申请号 |
AT20010103517T |
申请日期 |
2001.02.16 |
申请人 |
WOLFF WALSRODE AG |
发明人 |
SCHLESIGER, HARTWIG, DR.;MORNING, MARTIN, DR.;WEBER, GUNTER, DR.;ECKHARDT, VOLKER, DR.;SONNENBERG, GERD;KIESEWETTER, RENE, DR. |
分类号 |
C08B15/00;A23L29/262;C08B11/20;C08B15/02;C08J3/12 |
主分类号 |
C08B15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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