Title:
湿気硬化性ポリウレタンホットメルト接着剤およびこれを用いた積層シート
Document Type and Number:
Japanese Patent JP4158838
Kind Code:
B2
Abstract:
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.
Inventors:
Kanagawa Yoshinori
Toshio Niwa
Tamaki Yoshifumi
Toshio Niwa
Tamaki Yoshifumi
Application Number:
JP2008513421A
Publication Date:
October 01, 2008
Filing Date:
November 19, 2007
Export Citation:
Assignee:
DIC Corporation
International Classes:
C09J175/04; D06M17/04
Domestic Patent References:
| JP3167356A | ||||
| JP2002327310A | ||||
| JP2003049147A | ||||
| JP2003246830A | ||||
| JP2005290280A |
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai
Nobuo Arakawa
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai
Nobuo Arakawa
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