公开(公告)号：US20230221298A1

公开(公告)日：2023-07-13

申请号：US18009429

申请日：2021-06-10

Applicant: Tokushima University

Inventor： Hideharu ABE ,  Koichi UTE

IPC: G01N33/493 ,  G01N33/68 ,  G01N33/53 ,  B01J20/26 ,  B01J20/28

CPC classification number: G01N33/493 ,  B01J20/261 ,  B01J20/267 ,  B01J20/28004 ,  G01N33/5308 ,  G01N33/6803 ,  B01J2220/68

Abstract: Provided is a method for simply obtaining a desired size fraction from an aqueous sample containing particles. The method includes the following steps: (1) bringing the aqueous sample containing particles into contact with a superabsorbent polymer to obtain a superabsorbent polymer gel containing a portion of the particles, and (2) mixing the superabsorbent polymer gel with a salt to recover a portion of the particles.

公开(公告)号：US20200347165A1

公开(公告)日：2020-11-05

申请号：US16762221

申请日：2018-11-14

Applicant: TOKUSHIMA UNIVERSITY ,  SEKISUI CHEMICAL CO., LTD.

Inventor： Koichi UTE ,  Tomohiro HIRANO ,  Miyuki OSHIMURA ,  Yasunari KUSAKA ,  Yohei NISHIMURA ,  Misaki SENOO

IPC: C08F218/08 ,  C08F216/06

Abstract: The present invention provides a vinyl alcohol-vinyl acetate copolymer having excellent solubility and capable of providing a film having high flexibility, high mechanical strength, and high adhesion, and a method for producing a vinyl alcohol-vinyl acetate copolymer. Provided is a vinyl alcohol-vinyl acetate copolymer including a unit of vinyl alcohol and a unit of vinyl acetate, the vinyl alcohol-vinyl acetate copolymer having a triad unit chain ratio TOO of 7.5 or less, where the triad unit chain ratio TOO is obtained using the following formula (1): [ Math .  1 ] T OO = [ Vac   content ] × [ OOO   proportion ] × 2 [ VOH   content ] × [ AOO   proportion ] ( 1 ) wherein the VOH content ratio represents the amount of the unit of vinyl alcohol, the Vac content ratio represents the amount of the unit of vinyl acetate, the OOO proportion represents the proportion of a triad OOO, and the AOO proportion represents the proportion of a triad AOO.

公开(公告)号：US20220220234A1

公开(公告)日：2022-07-14

申请号：US17608591

申请日：2020-05-08

Applicant: SEKISUI CHEMICAL CO., LTD. ,  TOKUSHIMA UNIVERSITY

Inventor： Yohei NISHIMURA ,  Risa YAMAZAKI ,  Koichi UTE ,  Miyuki OSHIMURA ,  Tomohiro HIRANO ,  Ryo KAGITANI

IPC: C08F16/06 ,  C08F16/38 ,  C08F8/30

Abstract: The present invention provides a vinyl alcohol-amino acid ester copolymer that is excellent in properties such as cell culture properties, biocompatibility, antibacterial properties, and solubility in organic solvents, and is applicable to the medical field, the biomaterial field, and the agricultural field (medical and life science fields). Provided is a vinyl alcohol-amino acid ester copolymer including a unit represented by the following formula (1) and a unit represented by the following formula (2): where, in the formula (2), R1 represents a hydrocarbon group that may optionally have a substituent, R2 and R3 each independently represent a hydrogen atom or a hydrocarbon group, and R1 and R2, or R2 and R3, may optionally be bonded together to form a cyclic structure.

公开(公告)号：US20190153136A1

公开(公告)日：2019-05-23

申请号：US16098478

申请日：2017-05-08

Applicant: TOKUSHIMA UNIVERSITY ,  SEKISUI CHEMICAL CO., LTD.

Inventor： Koichi UTE ,  Tomohiro HIRANO ,  Miyuki OSHIMURA ,  Yasunari KUSAKA

IPC: C08F216/38 ,  C08F216/06 ,  B01J31/12

Abstract: The present invention provides a vinyl alcohol-vinyl acetate copolymer having excellent solubility and a method for producing a vinyl alcohol-vinyl acetate copolymer. Provided is a vinyl alcohol-vinyl acetate copolymer including a unit of vinyl alcohol and a unit of vinyl acetate, the vinyl alcohol-vinyl acetate copolymer having a randomness value R of 0.5 or higher, the randomness value R being obtained using the following equation (1): R = 1 L A + 1 L O ( 1 ) where LO represents a mean chain length of the unit of vinyl alcohol and LA represents a mean chain length of the unit of vinyl acetate.