POLYURETHANE ELASTIC FIBER AND METHOD FOR PRODUCING SAME

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United States of America Patent

SERIAL NO

15029005

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present invention relates to polyurethane elastic fibers obtained by spinning a polyurethane resin. The polyurethane resin includes, as constituent units, a diol (a1) having a number average molecular weight of 500 to 10,000, an organic diisocyanate (b), and a chain extender (a2). The total concentration of urethane groups and urea groups in the polyurethane resin is 1.25 to 2.50 mmol/g based on the weight of the polyurethane resin. Hard segment domains of the polyurethane resin have an average domain size of 20 to 30 nm as measured with an atomic force microscope.

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Patent Owner(s)

Patent OwnerAddress
TORAY OPELONTEX CO LTDOSAKA 530-8222

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
FUNAOKA, Shinpei Kyoto, JP 2 4
HORI, Kenzo Kyoto, JP 2 4
ITO, Shingo Shiga, JP 193 695
KOIKE, Yusuke Kyoto, JP 34 143
TAKAYAMA, Hiroshi Shiga, JP 36 316
TANAKA, Toshihiro Shiga, JP 197 3170

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