Sekisui Chemical Co., Ltd.

Tokushima University

Tomohiro Hirano

Miyuki Oshimura

Koichi Ute

Yasunari Kusaka

Yohei Nishimura

Misaki Senoo

Risa Yamazaki

Ryo Kagitani

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), Rrepresents a hydrocarbon group that may optionally have a substituent, Rand Reach independently represent a hydrogen atom or a hydrocarbon group, and Rand R, or Rand R, may optionally be bonded together to form a cyclic structure.

Vinyl alcohol-amino acid ester copolymer

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 Tof 7.5 or less, where the triad unit chain ratio Tis obtained using the following formula (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.

Vinyl alcohol-vinyl acetate copolymer

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): where Lrepresents a mean chain length of the unit of vinyl alcohol and Lrepresents a mean chain length of the unit of vinyl acetate.

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Tokushima, Japan

Tomohiro Hirano