公开(公告)号：DE502006003272D1

公开(公告)日：2009-05-07

申请号：DE502006003272

申请日：2006-04-12

Applicant: BASF SE

Inventor： MAASE MATTHIAS ,  STEGMANN VEIT

IPC: C08B1/00 ,  C08J3/09

Abstract: The present invention relates to a solution comprising cellulose, an ionic liquid comprising anions and cations as solvent and 6-30% by weight of a nitrogen-comprising base, based on the total weight of the solution, its preparation and also its use for the physical or chemical treatment of cellulose.

公开(公告)号：AU2007271219A1

公开(公告)日：2008-01-10

申请号：AU2007271219

申请日：2007-06-28

Applicant: BASF SE ,  UNI SIEGEN

Inventor： WEZSTEIN MARKUS ,  MASSONNE KLEMENS ,  ANDOLA GIOVANNI D ,  STEGMANN VEIT ,  MORMANN WERNER ,  LENG WEI

IPC: C08B11/18 ,  C08B15/10 ,  C08B37/00

Abstract: The present invention describes a process for preparing acetals of polysaccharides, oligosaccharides or disaccharides by dissolving these in at least one ionic liquid and reacting them with a vinyl ether. The acetalated polysaccharides or oligosaccharides obtained in this way can be crosslinked by treatment with acid. The present invention also provides acetals of polysaccharides, oligosaccharides or disaccharides and also crosslinked polysaccharides or oligosaccharides.

公开(公告)号：AU2007222455A1

公开(公告)日：2007-09-13

申请号：AU2007222455

申请日：2007-02-28

Applicant: BASF SE

Inventor： MORMANN WERNER ,  LENG WEI ,  ANDOLA GIOVANNI D ,  STEGMANN VEIT ,  WEZSTEIN MARKUS ,  MASSONNE KLEMENS

IPC: C08B15/02

Abstract: The present invention describes a process for the degradation of cellulose by dissolving the cellulose in an ionic liquid and treating it with an acid, if appropriate with addition of water.

公开(公告)号：AU2006332111A1

公开(公告)日：2007-07-12

申请号：AU2006332111

申请日：2006-12-22

Applicant: BASF SE

Inventor： MASSONNE KLEMENS ,  STEGMANN VEIT ,  UERDINGEN ERIC ,  HERMANUTZ FRANK ,  MAASE MATTHIAS ,  LUTZ MICHAEL ,  GAEHR FRANK

IPC: C08J3/09 ,  C08B1/00 ,  D01F2/02

Abstract: A solution system for biopolymers in the form of carbohydrates based on a molten ionic liquid, additives optionally being contained in the solution system, is described. This solution system contains a protic solvent or a mixture of several protic solvents, and in the case where the protic solvent is solely water, this is present in the solution system in an amount of more than about 5 wt. %. Carbohydrates can be incorporated into the solution system, in particular in the form of starch, cellulose and derivatives thereof, and it can then be used for regeneration of the carbohydrates contained therein. A particularly advantageous process for the preparation of the solution system containing the carbohydrates and for the preparation of regenerated carbohydrates, in particular in the form of regenerated cellulose fibers, is moreover described. The invention accordingly also provides such spun fibers as are distinguished in that they are non-fibrillating. The invention offers in particular economic advantages over the systems of the prior art.