Polysaccharide fibers and method for producing same

Abstract

The present invention relates to a method for the production of polysaccharide fibers which contain α(1→3)-glucan as a fiber-forming substance, as well as to the fibers made thereby, and to their use.

1 . A method for the production of a polysaccharide fiber whose fiber-forming substance is α(1→3)-glucan, wherein the method is a modified viscose process. 
     
     
         2 . The method according to  claim 1 , wherein at least 90% of the α(1→3)-glucan are hexose units and at least 50% of the hexose units are linked via α(1→3)-glycosidic bonds. 
     
     
         3 . The method according to  claim 1  or  2 , wherein the fiber is selected from the group consisting of a staple fiber and a continuous filament. 
     
     
         4 . The method according to  claim 1  or  2 , wherein no more than 30% by weight of CS 2 , related to the fiber-forming substance, is used. 
     
     
         5 . A polysaccharide fiber whose fiber-forming substance is α(1→3)-glucan, wherein the polysaccharide fiber is produced using a modified vicose process. 
     
     
         6 . The fiber according to  claim 5 , wherein at least 90% of the α(1→3)-glucan are hexose units and at least 50% of the hexose units are linked via α(1→3)-glycosidic bonds. 
     
     
         7 . The fiber according to  claim 5  or  6 , wherein the fiber is selected from the group consisting of a staple fiber and a continuous filament. 
     
     
         8 . A textile product comprising the fiber according to  claim 5 , wherein the textile product is selected from the group consisting of yarns, woven fabrics, and knitted fabrics. 
     
     
         9 . A product comprising the fiber according to  claim 5 , wherein the product is selected from the group consisting of nonwovens, hygiene articles, and of other, absorbent nonwoven products and papers. 
     
     
         10 . The textile product according to  claim 8 , wherein the fiber is selected from the group consisting of a staple fiber and a continuous filament. 
     
     
         11 . The method according to  claim 3 , wherein no more than 30% by weight CS 2 , related to the fiber-forming substance, is used. 
     
     
         12 . The method according to  claim 11 , wherein less than 25% by weight of CS 2 , related to fiber-forming substance is used. 
     
     
         13 . The method according to  claim 12 , wherein less than 15% by weight of CS 2 , related to fiber-forming substance is used. 
     
     
         14 . The method according to  claim 4 , wherein less than 25% by weight of CS 2 , related to fiber-forming substance is used. 
     
     
         15 . The method according to  claim 14  wherein less than 15% by weight of CS 2 , related to fiber-forming substance is used. 
     
     
         16 . The method according to  claim 4 , wherein the fiber is selected from the group consisting of a staple fiber and a continuous filament. 
     
     
         17 . The product according to  claim 9 , wherein the hygiene products are selected from the group consisting of tampons, panty liners and diapers. 
     
     
         18 . The product according to  claim 9 , wherein the fiber is selected from the group consisting of a staple fiber and a continuous filament.