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公开(公告)号：EP3382517A1
公开(公告)日：2018-10-03
申请号：EP16868422.3
申请日：2016-11-14
发明人： ONISHI, Jun , NAKANE, Soichiro , HOSOKAWA, Yuki
IPC分类号： G06F3/041 , B32B7/02 , B32B27/00 , B32B27/40 , C09J7/00 , C09J11/08 , C09J175/04 , C09J175/08 , G02F1/1333 , G09F9/00
CPC分类号： B32B7/02 , B32B27/00 , B32B27/40 , C09J7/00 , C09J7/38 , C09J11/08 , C09J175/04 , C09J175/08 , G02F1/1333 , G06F3/041 , G09F9/00
摘要： The present invention provides an optically clear adhesive sheet with reduced delay bubble generation using a thermosetting polyurethane composition that has excellent flexibility and is capable of giving a thick film. The optically clear adhesive sheet of the present invention is an optically clear adhesive sheet formed of a cured product of a thermosetting polyurethane composition, the optically clear adhesive sheet having a shear storage modulus (G') at 85°C of 4.5 × 10 3 to 5.0 × 10 4 Pa, a loss tangent (tan δ) at 85°C of 0.3 to 0.97, and a thickness of 50 to 2000 µm. The optically clear adhesive sheet preferably has an adhesive strength measured by a 180° peel test of 2 N/25 mm or more.
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公开(公告)号：EP3357985A1
公开(公告)日：2018-08-08
申请号：EP16851416.4
申请日：2016-09-26
发明人： HOSOKAWA, Yuki , ONISHI, Jun , NAKANE, Soichiro
CPC分类号： C09J7/35 , B32B27/00 , B32B27/40 , C08G18/246 , C08G18/44 , C08G18/48 , C08G18/62 , C08G18/6204 , C08G18/73 , C08G2170/20 , C09J7/00 , C09J11/06 , C09J175/04 , G06F3/041
摘要： The present invention provides an optically clear adhesive sheet using a heat-curable polyurethane composition, wherein the optically clear adhesive sheet can, when bonded to an adherend such as a glass plate, prevent the occurrence of air bubbles even at high temperature and normal humidity and maintain a stable bonded interface. The optically clear adhesive sheet of the present invention is an optically clear adhesive sheet containing: a cured product of a heat-curable polyurethane composition, the heat-curable polyurethane composition containing a polyol component and a polyisocyanate component, the polyol component having an olefin skeleton, the polyisocyanate component containing an acyclic aliphatic polyisocyanate and/or an alicyclic polyisocyanate.
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公开(公告)号：EP3421565A1
公开(公告)日：2019-01-02
申请号：EP17756031.5
申请日：2017-01-19
发明人： NAKANE, Soichiro , HOSOKAWA, Yuki , ONISHI, Jun
IPC分类号： C09J7/02 , B32B27/00 , B32B27/18 , B32B27/40 , C08G18/40 , C08J5/18 , C09J11/08 , C09J157/02 , C09J175/14 , C09J193/04 , G02F1/1333 , G09F9/00 , C08G18/62
摘要： The present invention provides an optically clear adhesive sheet with excellent transparency using a thermosetting polyurethane composition that has excellent flexibility and is capable of giving a thick film. The optically clear adhesive sheet of the present invention contains: a cured product of a thermosetting polyurethane composition, the thermosetting polyurethane composition containing a polyol component, a polyisocyanate component, and a tackifier, the thermosetting polyurethane composition having a tackifier content of 5 to 21 wt%.
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公开(公告)号：EP3412740A1
公开(公告)日：2018-12-12
申请号：EP17747202.4
申请日：2017-01-19
发明人： NAKANE, Soichiro , HOSOKAWA, Yuki , ONISHI, Jun
摘要： The present invention provides an optically clear adhesive sheet with excellent environment resistance using a thermosetting polyurethane composition that has excellent flexibility and is capable of giving a thick film. The optically clear adhesive sheet of the present invention contains: a cured product of a thermosetting polyurethane composition, the thermosetting polyurethane composition containing an olefin-based polyol component and a polyisocyanate component, the optically clear adhesive sheet exhibiting a moisture absorption of 1.0 wt% or lower after being subjected to a test in a high-temperature, high-humidity environment for eight hours and exhibiting a haze of 1.5% or lower after being subjected to the test in a high-temperature, high-humidity environment for 100 hours, wherein the test in a high-temperature, high-humidity environment is performed at a temperature of 85°C and a humidity of 85%.
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