发明公开
- 专利标题： VERFAHREN ZUR HERSTELLUNG VON REGENERIERTEN BIOPOLYMEREN UND DIE DANACH ERHÄLTLICHEN REGENERIERTEN ERZEUGNISSE
- 专利标题（英）： Method for producing regenerated biopolymers and regenerated products obtained by said method
- 专利标题（中）： 用于生产再生生物聚合物和可再生后产品
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申请号： EP08849300.2申请日： 2008-11-13
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公开(公告)号： EP2209812A1公开(公告)日： 2010-07-28
- 发明人: UERDINGEN, Eric , SIEMER, Michael , LUTZ, Michael , WISNIEWSKI, Thomas , HERMANUTZ, Frank , GAEHR, Frank
- 申请人： BASF SE
- 申请人地址： 67056 Ludwigshafen DE
- 专利权人： BASF SE
- 当前专利权人： BASF SE
- 当前专利权人地址： 67056 Ludwigshafen DE
- 代理机构： Reitstötter - Kinzebach
- 优先权： EP07022087 20071114
- 国际公布： WO2009062723 20090522
- 主分类号： C08B16/00
- IPC分类号： C08B16/00 ; C08B1/00 ; D01F2/02
摘要：
The invention relates to a method for producing regenerated biopolymers in the form of carbohydrates, using a solvent system that contains the biopolymers dissolved therein. The solvent system is based on a melted ionic liquid and optionally a protic solvent or a mixture thereof. The biopolymers dissolved in the solvent system are precipitated in a coagulation medium, said medium comprising a protic coagulant or a mixture of protic coagulants. The method according to the invention is characterized in that the surface tension σ of the coagulant or the mixture of coagulants is 99% to 30% of the surface tension σ of water, the surface tension being measured according to ASTM D 1590-60 at a temperature of 50°C. The method according to the invention is economical and flexible and leads to advantageous products, especially in the form of staple fibers which are especially not fibrillated and have an advantageous wet to dry strength ratio.
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