Patent ID: 11920261
Assignee: DAICEL CORPORATION
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC D | IPC D

Claim 11:
12. A method for producing a cellulose acetate band, the method comprising:
preparing a spinning dope including dissolving cellulose acetate, and adding at least one metal oxide selected from the group consisting of Fe3O4, Fe2O3, MnO2, Cr2O3, Cr2CuO4, NiO, Sb2O3, and CoAl2O4 at not smaller than 0.05 wt. % and not greater than 1 wt. % in terms of solid content;
filtering the spinning dope; and
spinning the cellulose acetate using the filtered spinning dope;
wherein titanium dioxide, if added, is not added until the spinning; and
wherein the magnesium content is not greater than 300 ppm.