Artificial polypeptide fiber and method for producing the same

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United States of America Patent

PATENT NO 9617315
SERIAL NO

14114636

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Abstract

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An artificial polypeptide fiber of the present invention is an artificial fiber containing a polypeptide as a main component, and has a stress of 350 MPa or more and a toughness of 138 MJ/m3 or more. A method for producing an artificial polypeptide fiber of the present invention is a method for producing the artificial polypeptide fiber obtained by spinning a spinning solution (6) containing a polypeptide derived from natural spider silk proteins and performing drawing of at least two stages. The drawing of at least two stages includes a first-stage drawing (3) in wet heat and a second-stage drawing (4) in dry heat. Thereby, the present invention provides high-toughness artificial polypeptide fibers having favorable stress and rupture elongation, and a method for producing the same.

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Patent Owner(s)

  • SPIBER INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ishikawa, Mizuki Tsuruoka, JP 5 55
Murata, Shinya Tsuruoka, JP 4 47
Sato, Ryota Tsuruoka, JP 38 227
Sekiyama, Kaori Tsuruoka, JP 6 47
Sekiyama, Kazuhide Tsuruoka, JP 15 60

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