发明授权
- 专利标题： VERFAHREN UND VORRICHTUNG ZUR REGELUNG DER ZUSAMMENSETZUNG DER CELLULOSEHALTIGEN EXTRUSIONSLÖSUNG BEI DEM LYOCELLPROZESS
- 专利标题（英）： Method and device for controlling the composition of the cellulose containing extrusion solution in the lyocell process
- 专利标题（中）： 方法和一种控制纤维素挤出解决方案的组成莱赛尔
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申请号： EP00971268.8申请日： 2000-09-29
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公开(公告)号： EP1226293B1公开(公告)日： 2004-01-21
- 发明人: KIND, Uwe , KAGALOWSKI, Leo , BLECH, Marco
- 申请人： Lurgi Zimmer AG
- 申请人地址： Borsigallee 1 60388 Frankfurt am Main DE
- 专利权人： Lurgi Zimmer AG
- 当前专利权人： Lurgi Zimmer AG
- 当前专利权人地址： Borsigallee 1 60388 Frankfurt am Main DE
- 代理机构： Brandenburg, Thomas, Dr.
- 优先权： DE19947909 19991006
- 国际公布： WO2001025517 20010412
- 主分类号： D01F2/00
- IPC分类号： D01F2/00 ; C08J5/18 ; C08L1/02
摘要：
A method for controlling the composition of the cellulose containing extrusion solution in the production of cellulosic mouldings comprises (a) mixing cellulose with an aqueous amine oxide solution, (b) transforming the mixture into the extrusion solution by means of evaporating off water under reduced pressure with the input of shear energy, (c) extruding the extrusion solution to form the cellulosic mouldings, then coagulating them in a coagulation bath, and (d) washing the cellulosic mouldings formed to remove residual amine oxide; whereby in step (a) the relationship cellulose/amine oxide is maintained at a predetermined value by means of a pre-controller and the water content of the extrusion solution after leaving stage (b) is maintained at a pre-determined value by a means of main controller. The inventive method permits precise control of the solution composition.
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