发明申请
- 专利标题: MOISTURE-CURABLE POLYURETHANE HOT MELT ADHESIVE AND MULTILAYER SHEET USING THE SAME
- 专利标题(中): 水分可固化聚氨酯热熔胶和多层薄板
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申请号: US12302237申请日: 2007-11-19
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公开(公告)号: US20090208759A1公开(公告)日: 2009-08-20
- 发明人: Yoshinori Kanagawa , Toshio Niwa , Toshifumi Tamaki
- 申请人: Yoshinori Kanagawa , Toshio Niwa , Toshifumi Tamaki
- 申请人地址: JP Tokyo
- 专利权人: DIC Corporation
- 当前专利权人: DIC Corporation
- 当前专利权人地址: JP Tokyo
- 优先权: JP2006325683 20061201
- 国际申请: PCT/JP2007/072359 WO 20071119
- 主分类号: B32B27/08
- IPC分类号: B32B27/08 ; C08G18/12 ; B32B27/40 ; C08G18/32
摘要:
There are provided a moisture-curable polyurethane hot melt adhesive containing a urethane prepolymer obtained by reacting a polyol (A) with a polyisocyanate (B), wherein the polyol (A) contains 40 to 80 mass % of a polycarbonate polyol (a1), 5 to 40 mass % of polytetramethylene glycol (a2), and 5 to 40 mass % of a polyester polyol (a3) obtained by reacting a polycarboxylic acid containing an aliphatic polycarboxylic acid and an aromatic polycarboxylic acid with a polyether polyol obtained by adding an alkylene oxide to bisphenol A, based on the total amount of the polyol (A), and a multilayer sheet using this adhesive. This adhesive can maintain excellent adhesion strength even after washing is repeatedly performed under stringent washing conditions without impairing soft texture of a multilayer sheet.
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