公开(公告)号：US20220095728A1

公开(公告)日：2022-03-31

申请号：US17426605

申请日：2020-01-30

Applicant: Aderans Co., Ltd. ,  Spiber Inc.

Inventor： Masatoshi SEKI ,  Hideki TAKAHASHI ,  Ren ITO ,  Yunosuke ABE

IPC: A41G3/00 ,  D01D10/02 ,  D01D5/06 ,  D01D7/00 ,  D01D4/02

Abstract: Disclosed is a fiber for artificial hairs that is given a predetermined shape, the fiber being formed from a synthetic fibroin fiber containing a modified fibroin, and the fiber expanding when placed in a wet state and contracting when dried from a wet state. Also disclosed is a method for producing a fiber for artificial hairs that is given a predetermined shape, the method including retaining a fibroin fiber containing a modified fibroin in a state conforming to a predetermined shape. A wetted fibroin fiber may also be heated while being retained in a state conforming to a predetermined shape.

公开(公告)号：US20220119463A1

公开(公告)日：2022-04-21

申请号：US17421243

申请日：2020-01-09

Applicant: Spiber Inc.

Inventor： Keisuke MORITA ,  Yunosuke ABE ,  Hiroyuki NAKAMURA ,  Shota TOGASHI ,  Tetsuo ASAKURA

IPC: C07K14/435 ,  C12N15/63 ,  D01F4/02 ,  C12P21/02

Abstract: The present invention relates to a modified fibroin including a domain sequence represented by Formula 1: [(A)n motif-REP]m or Formula 2: [(A)n motif-REP]m-(A)n motif, and having a serine residue content rate of less than 5.5%.
[In Formula 1 and Formula 2, the (A)n motif represents an amino acid sequence consisting of 4 to 27 amino acid residues, and the number of alanine residues with respect to the total number of amino acid residues in the (A)n motif is 80% or more. REP represents an amino acid sequence consisting of 10 to 200 amino acid residues. m represents an integer of 10 to 300. The plurality of (A)n motifs may be the same amino acid sequence or different amino acid sequences. A plurality of REPs may be the same amino acid sequence or different amino acid sequences.]

公开(公告)号：US20220010460A1

公开(公告)日：2022-01-13

申请号：US17427895

申请日：2020-02-07

Applicant: Spiber Inc.

Inventor： Yunosuke ABE ,  Hideto ISHII ,  Ryoko SATO ,  Akito SATO ,  Hirotada ANDO ,  Hiroshi KANO ,  Koichi KOTAKA ,  Jun KOBAYASHI

IPC: D01F4/02 ,  C07K14/435 ,  D01D5/06 ,  D02G3/04

Abstract: An object of the present invention is to provide a method for producing a modified fibroin multifilament excellent in productivity and a multifilament produced by the same. The multifilament of the present invention contains modified fibroin, in which the multifilament has 100 or more constituent single yarns, a coefficient of variation in elastic modulus is 15% or less, a coefficient of variation in strength is 15% or less, and a coefficient of variation in elongation is less than 33%.