	US 11,920,021 B2
	Cellulose acetate and cellulose acetate composition
Hiroyuki Matsumura, Tokyo (JP); Kyokutou Ga, Tokyo (JP); and Masaaki Kusumoto, Tokyo (JP)
Assigned to DAICEL CORPORATION, Osaka (JP)
Appl. No. 17/629,856
Filed by DAICEL CORPORATION, Osaka (JP)
PCT Filed Dec. 9, 2019, PCT No. PCT/JP2019/048167 § 371(c)(1), (2) Date Jan. 25, 2022, PCT Pub. No. WO2021/117113, PCT Pub. Date Jun. 17, 2021.
Prior Publication US 2022/0267574 A1, Aug. 25, 2022
Int. Cl. C08L 1/12 (2006.01); C08J 5/18 (2006.01); C08K 3/22 (2006.01)

CPC C08L 1/12 (2013.01) [C08J 5/18 (2013.01); C08K 3/22 (2013.01); C08K 2003/222 (2013.01); C08L 2201/06 (2013.01)]

5 Claims

1. A cellulose acetate composition containing a cellulose acetate and an additive; wherein

the cellulose acetate has a total degree of acetyl substitution of not greater than 2.7 and a ratio τ of a sum of a degree of acetyl substitution at a 2-position and a degree of acetyl substitution at a 3-position to a degree of acetyl substitution at a 6-position in the total degree of acetyl substitution of not less than 2.0; and

the additive is one or more selected from magnesium aluminometasilicate, magnesium oxide, triacetin, or poly[hydroxybutyrate-co-hydroxyhexanoate];

wherein a content of the additive is 5 to 40 wt. %.