Cellulose acetate fiber, cellulose acetate band, and method for manufacturing cellulose acetate band

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United States of America Patent

PATENT NO 11920261
APP PUB NO 20210180215A1
SERIAL NO

17259354

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Abstract

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An object is to mitigate plugging of spinneret hole, the plugging occurring with the passage of spinning time, even though cellulose acetate has a small titanium dioxide content or contains no titanium dioxide, and to prevent a reduction in pressure drop of the resulting cellulose acetate band. A cellulose acetate fiber having a titanium dioxide content of not greater than 0.05 wt. %; and a content of at least one type of metal oxide selected from the group consisting of Fe3O4, Fe2O3, MnO2, Cr2O3, Cr2CuO4, NiO, Sb2O3, and CoAl2O4 of not smaller than 0.05 wt. % and not greater than 1 wt. %.

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Patent Owner(s)

Patent OwnerAddress
DAICEL CORPORATION3-1 OFUKA-CHO KITA-KU OSAKA-SHI OSAKA 530-0011

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ga, Kyokutou Tokyo, JP 7 3
Taniguchi, Hiroki Tokyo, JP 86 738

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