公开(公告)号：US20220324923A1

公开(公告)日：2022-10-13

申请号：US17764669

申请日：2020-09-28

Applicant: Spiber Inc.

Inventor： Kentaro Takahashi ,  Atsushi Ikeda ,  Hideki Kagata ,  Yunosuke Abe ,  Kazuki Sakata

IPC: C07K14/435 ,  D01F4/02

Abstract: An object of the present invention is to provide a method for advantageously producing a protein molded article which can solve a problem caused by esterification of a hydroxyl group contained in a protein while maintaining a sufficient strength. A method for producing a protein molded article according to the present invention includes a step of bringing a raw material molded article containing a protein in which a hydroxyl group is esterified into contact with an acidic or basic medium in a state of applying a tensile force, thus hydrolyzing an ester group.

公开(公告)号：US20250163112A1

公开(公告)日：2025-05-22

申请号：US18294011

申请日：2022-08-02

Applicant: Spiber Inc.

Inventor： Hideki Kagata ,  Kazuki Sakata

IPC: C07K14/435 ,  C08J9/26 ,  C08J9/28

Abstract: The present disclosure relates to a porous body containing a polypeptide derivative, in which the polypeptide derivative contains a block copolymer containing a first segment containing a polypeptide skeleton, and one or a plurality of second segments that are bonded to the first segment, the polypeptide skeleton is a recombinant polypeptide skeleton or a hydrophobic polypeptide skeleton, and the second segment contains a molecular group having a plasticizing function for the polypeptide skeleton.

公开(公告)号：US20250075423A1

公开(公告)日：2025-03-06

申请号：US18294005

申请日：2022-08-02

Applicant: Spiber Inc.

Inventor： Hideki Kagata ,  Kazuki Sakata

IPC: D06N3/12 ,  C07K14/435 ,  D06N3/14 ,  D06N3/18

Abstract: The present disclosure relates to a synthetic leather including a base material layer containing a fiber base material, in which at least a part of the synthetic leather contains a polypeptide derivative, the polypeptide derivative contains a block copolymer containing a first segment containing a polypeptide skeleton, and one or a plurality of second segments that are bonded to the first segment, the polypeptide skeleton is a recombinant polypeptide skeleton or a hydrophobic polypeptide skeleton, and the second segment contains a molecular group having a plasticizing function for the polypeptide skeleton.

公开(公告)号：US20230128695A1

公开(公告)日：2023-04-27

申请号：US17911296

申请日：2021-03-16

Applicant: Spiber Inc.

Inventor： Kazuki Sakata ,  Nao Kitahara ,  Seiji Shirakawa ,  Kentaro Takahashi ,  Leona Muto ,  Oliver Syed Shafaat ,  Hideki Kagata

IPC: C08H1/00 ,  C08L89/00

Abstract: An aspect of the present disclosure provides a synthetic polymer containing a first segment containing a polypeptide skeleton and one or a plurality of second segments bonded directly to the first segment, in which the second segment contains a molecular group having a plasticizing function for the polypeptide skeleton.