公开(公告)号：US20210380782A1

公开(公告)日：2021-12-09

申请号：US17053439

申请日：2019-02-15

Applicant: DAICEL CORPORATION

Inventor： Kyokutou GA ,  Hiroki TANIGUCHI

IPC: C08L1/12 ,  C08K5/11 ,  B29C51/00

Abstract: An object of the present invention is to provide a cellulose acetate composition for thermoforming with excellent biodegradability and excellent thermoformability. A cellulose acetate composition for thermoforming containing a cellulose acetate and a glycerin ester-based plasticizer, wherein the cellulose acetate has a degree of acetyl substitution of 1.4 or greater and 2.0 or less, a compositional distribution index (CDI) of 4.0 or less, and a total sulfur content of 15 mg/kg or greater and less than 150 mg/kg:

公开(公告)号：US20210363331A1

公开(公告)日：2021-11-25

申请号：US17256803

申请日：2019-07-18

Applicant: DAICEL CORPORATION

Inventor： Kyokutou GA ,  Masahiko SUZUKI

IPC: C08L1/12 ,  C08B3/06 ,  C08K5/11 ,  C08J5/18 ,  A24D3/10 ,  A24D3/17 ,  A24D3/02 ,  A24D3/14 ,  A24D1/20 ,  A24D3/06

Abstract: An object of the present invention is to provide a cellulose acetate composition with excellent biodegradability and water solubility, and excellent thermoformability. A cellulose acetate composition comprising: a cellulose acetate having a degree of acetyl substitution of 0.4 or greater and less than 1.4; and a citrate ester-based plasticizer, wherein a content of the citrate ester-based plasticizer is 3 parts by weight or greater per 100 parts by weight of the total amount of the cellulose acetate and the citrate ester-based plasticizer.

公开(公告)号：US20220267574A1

公开(公告)日：2022-08-25

申请号：US17629856

申请日：2019-12-09

Applicant: DAICEL CORPORATION

Inventor： Hiroyuki MATSUMURA ,  Kyokutou GA ,  Masaaki KUSUMOTO

IPC: C08L1/12 ,  C08J5/18 ,  C08K3/22

Abstract: An object of the present invention is to provide a cellulose acetate with excellent biodegradability in seawater.
A cellulose acetate having a total degree of acetyl substitution of not greater than 2.7, a ratio τ of a sum of a degree of acetyl substitution at the 2-position and a degree of acetyl substitution at the 3-position to a degree of acetyl substitution at the 6-position in the total degree of acetyl substitution of not less than 2.0, and a sulfate component amount of greater than 20 ppm and not greater than 400 ppm.

公开(公告)号：US20240191063A1

公开(公告)日：2024-06-13

申请号：US18404977

申请日：2024-01-05

Applicant: DAICEL CORPORATION

Inventor： Hiroyuki MATSUMURA ,  Kyokutou GA ,  Masaaki KUSUMOTO

IPC: C08L1/12 ,  C08J5/18 ,  C08K3/22

CPC classification number: C08L1/12 ,  C08J5/18 ,  C08K3/22 ,  C08K2003/222 ,  C08L2201/06

Abstract: An object of the present invention is to provide a cellulose acetate with excellent biodegradability in seawater.
A cellulose acetate having a total degree of acetyl substitution of not greater than 2.7, a ratio τ of a sum of a degree of acetyl substitution at the 2-position and a degree of acetyl substitution at the 3-position to a degree of acetyl substitution at the 6-position in the total degree of acetyl substitution of not less than 2.0, and a sulfate component amount of greater than 20 ppm and not greater than 400 ppm.

公开(公告)号：US20210317288A1

公开(公告)日：2021-10-14

申请号：US17267538

申请日：2019-08-05

Applicant: DAICEL CORPORATION

Inventor： Kyokutou GA ,  Hiroki TANIGUCHI

IPC: C08L1/12 ,  A24D3/10 ,  C08K5/11 ,  B29C51/00 ,  C08K5/103

Abstract: An object of the present invention is to provide a cellulose acetate composition with excellent biodegradability and water solubility, and excellent thermoformability. A cellulose acetate composition containing: a cellulose acetate having a degree of acetyl substitution of 0.4 or greater and less than 1.4; and at least one type of glycerin ester-based plasticizer selected from the group consisting of monoacetin and diacetin, wherein a content of the glycerin ester-based plasticizer is 3 parts by weight or greater per 100 parts by weight of the total amount of the cellulose acetate and the glycerin ester-based plasticizer.

公开(公告)号：US20230201085A1

公开(公告)日：2023-06-29

申请号：US17926635

申请日：2021-06-10

Applicant: Daicel Corporation

Inventor： Kyokutou GA ,  Yukiko MATSUO

IPC: A61K8/02 ,  A61Q19/00

CPC classification number: A61K8/0245 ,  A61Q19/00 ,  A61K2800/28 ,  A61K2800/412 ,  A61K2800/805

Abstract: This scrub agent is in particle form with a plurality of vertices and has a median of particle size distribution set to a value in a range of from 0.1 mm to 1.0 mm.

公开(公告)号：US20210180215A1

公开(公告)日：2021-06-17

申请号：US17259354

申请日：2018-08-14

Applicant: DAICEL CORPORATION

Inventor： Kyokutou GA ,  Hiroki TANIGUCHI

IPC: D01F2/30 ,  D01F1/02

Abstract: 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. %.