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Patent Searching and Data


Title:
ADHESIVE TAPE
Document Type and Number:
WIPO Patent Application WO/2012/124519
Kind Code:
A1
Abstract:
Provided is an adhesive tape which has unevenness followability capable of sufficiently filling unevenness of an adherend and can hold a state in which unevenness is sufficiently filled over time. The adhesive tape includes an adhesive agent layer and a substrate layer, and the adhesive agent layer has a storage elasticity modulus at 20°C of 0.5 × 106 Pa to 1.0 × 108 Pa and a loss tangent tan δ at 20°C to 80°C of 0.1 or more. In a preferred embodiment, the adhesive agent layer contains an amorphous propylene-(1-butene) copolymer obtained by polymerization using a metallocene catalyst, and the propylene-(1-butene) copolymer has a weight average molecular weight (Mw) of 200,000 or more and a molecular weight distribution (Mw/Mn) of 2 or less.

Inventors:
SASAKI TAKATOSHI (JP)
HABU TAKASHI (JP)
IKISHIMA SHINSUKE (JP)
KAMEI KATSUTOSHI (JP)
ASAI FUMITERU (JP)
Application Number:
PCT/JP2012/055557
Publication Date:
September 20, 2012
Filing Date:
March 05, 2012
Export Citation:
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Assignee:
NITTO DENKO CORP (JP)
SASAKI TAKATOSHI (JP)
HABU TAKASHI (JP)
IKISHIMA SHINSUKE (JP)
KAMEI KATSUTOSHI (JP)
ASAI FUMITERU (JP)
International Classes:
C08F210/08; C09J7/22; C09J7/38; C09J123/14; C09J201/00
Domestic Patent References:
WO2008102670A12008-08-28
WO2005090505A12005-09-29
Foreign References:
JP2002155249A2002-05-28
JP2005298703A2005-10-27
JP2008214437A2008-09-18
JPH09137013A1997-05-27
JP2012062406A2012-03-29
Attorney, Agent or Firm:
MOMII, Takafumi (JP)
Takafumi Momii (JP)
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Claims: