公开(公告)号：US09890479B2

公开(公告)日：2018-02-13

申请号：US15029035

申请日：2014-10-16

申请人： SANYO CHEMICAL INDUSTRIES, LTD. ,  TORAY OPELONTEX CO., LTD.

发明人： Yusuke Koike ,  Shinpei Funaoka ,  Kenzo Hori ,  Toshihiro Tanaka ,  Shingo Ito ,  Hiroshi Takayama

IPC分类号： C08G18/10 ,  D01F6/70 ,  C08G18/48 ,  C08G18/72 ,  C09D175/08 ,  C08G18/42 ,  C08J5/18 ,  D04H1/56 ,  C08G18/76

CPC分类号： D01F6/70 ,  C08G18/10 ,  C08G18/42 ,  C08G18/4854 ,  C08G18/4858 ,  C08G18/4883 ,  C08G18/72 ,  C08G18/7671 ,  C08G2190/00 ,  C08J5/18 ,  C08J2375/08 ,  C09D175/08 ,  D04H1/56 ,  C08G18/30 ,  C08G18/3206 ,  C08G18/282

摘要： The present invention relates to a polyurethane resin including, 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.