公开(公告)号：US20220002583A1

公开(公告)日：2022-01-06

申请号：US17291299

申请日：2019-11-07

申请人： DAINICHISEIKA COLOR & CHEMICALS MFG CO., LTD.

发明人： Yusuke SUZUKI ,  Tatsuzo MUIRAKAWA ,  Kazuya SASAKI

IPC分类号： C09D175/08 ,  C08G18/12 ,  C08G18/32 ,  C08G18/48

摘要： The present invention relates to a porous layer structure containing a base material and a polyurethane porous layer formed on the base material, wherein a moisture permeability A of the porous layer structure measured by JIS L1099 A-1 (calcium chloride method) is 2000 to 10000 g/(m2·24h), a moisture permeability loss rate obtained by a predetermined formula from a moisture permeability B of the base material alone measured by JIS L1099 A-1 (calcium chloride method) and the moisture permeability A is 75% or less, and a peel strength at a bonding surface between the base material and the polyurethane porous layer is 0.7 kgf/inch or more.