发明授权
- 专利标题: Water vapor-permeable, waterproof fabric
- 专利标题(中): 水蒸气渗透,防水面料
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申请号: US09496284申请日: 2000-02-01
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公开(公告)号: US06521552B1公开(公告)日: 2003-02-18
- 发明人: Hiroshi Honna , Ryoji Tsukamoto , Makoto Yoshida , Michikage Matsui
- 申请人: Hiroshi Honna , Ryoji Tsukamoto , Makoto Yoshida , Michikage Matsui
- 优先权: JP11-024076 19990201
- 主分类号: B32B502
- IPC分类号: B32B502
摘要:
A water vapor-permeable waterproof fabric free from an environmental pollution problem upon being discarded is formed by coating a substrate fiber fabric with a composite coating layer including a lower layer (A) directly formed on the substrate fabric and an upper layer (B) formed on the lower layer (B), wherein the lower and upper layers are formed from one of polyetherester elastomers different from each other and each containing polyalkylene glycol (PAG) residues, and satisfy the following requirements: (a) in the polyetherester elastomer (PEEA), the polyalkylene glycol residues contain 90% by weight or more of polytetramethylene glycol residues; (b) in the polyetherester elastomer (PEEB), the polyalkylene glycol residues contain 50% by weight or more of polyethylene glycol residues; (c) the thickness of the composite coating layer is 5 to 50 &mgr;m; and (d) the lower layer (A) is in an amount of 5 to 40% by weight based on the total weight of the composite coating layer.