发明授权
- 专利标题： Process for preparing methylhydroxyalkylcellulose having a small number of coloured particles
- 专利标题（中）： 制备具有少量着色颗粒的甲基羟烷基纤维素的方法
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申请号： US11522218申请日： 2006-09-15
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公开(公告)号： US08197699B2公开(公告)日： 2012-06-12
- 发明人: Martin Kowollik , Wolfgang Dannhorn , Erik-Andreas Klohr , Hartwig Schlesiger , Bernhard Kranz , Helmut Holste , Gerd Sonnenberg
- 申请人： Martin Kowollik , Wolfgang Dannhorn , Erik-Andreas Klohr , Hartwig Schlesiger , Bernhard Kranz , Helmut Holste , Gerd Sonnenberg
- 申请人地址： US MI Midland
- 专利权人： Dow Global Technologies LLC
- 当前专利权人： Dow Global Technologies LLC
- 当前专利权人地址： US MI Midland
- 优先权： DE102005044452 20050917
- 主分类号： B01D37/00
- IPC分类号： B01D37/00
摘要：
The present invention describes a process for preparing methylhydroxyalkylcellulose having a small number of colored particles by separation of methylhydroxyalkylcellulose from aqueous suspension with subsequent washing of the methylhydroxyalkylcellulose using a specially equipped rotary pressure filter.
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