Porous cellulose ester articles having striated surfaces

Details Porous cellulose ester articles having striated surfaces Porous cellulose ester articles having striated surfaces

B - Operations, Transporting

01

D

18/15, 131/17, 1

B01D 69/08 (2006.01) A24D 3/10 (2006.01) D01D 5/24 (2006.01) D01D 5/253 (2006.01) D01F 2/28 (2006.01)

Patent

CA 1278907

ABSTRACT OF THE DISCLOSURE Skinless shaped articles having increased specific surface area and based on cellulose esters, including both solid and hollow fibers, can be produced with at least one surface having a striated or fibrous appearance and a cellular interior structure by extruding a spinning solution comprising a cellulose ester and a solvent therefor directly into an aqueous bath, wherein the residual content of solvent in the bath is maintained at a concentration below a critical level, preferably less than about 10 weight percent.

509211

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