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Patent Searching and Data


Title:
The pressure sensitive adhesive sheet for optics
Document Type and Number:
Japanese Patent JP5936537
Kind Code:
B2
Abstract:
Provided is an optical pressure-sensitive adhesive sheet which excels in whitening resistance and high-temperature bonding reliability and exhibits superior bump absorptivity. The optical pressure-sensitive adhesive sheet according to the present invention includes an acrylic pressure-sensitive adhesive layer and has a moisture content of 0.65 percent by weight or more after storage in an environment of 60° C. and 95 percent relative humidity for 120 hours, in which the acrylic pressure-sensitive adhesive layer contains an acrylic polymer and has a storage shear modulus at 23° C. of from 0.8×105 to 5.0×105 Pa, and the acrylic polymer is formed from, as an essential monomer component, a monomer that will form a homopolymer having a glass transition temperature of −10° C. or higher.

Inventors:
Hiroaki Kishioka
Hiroaki at the foot
Masayuki Okamoto
Rin Niwa
Application Number:
JP2012504412A
Publication Date:
June 22, 2016
Filing Date:
March 02, 2011
Export Citation:
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Assignee:
NITTO DENKO CORPORATION
International Classes:
C09J7/00; C09J133/06; C09J133/14; C09J133/24; C09J133/26
Domestic Patent References:
JP2011099078A2011-05-19
JP2009235205A2009-10-15
JP2007246879A2007-09-27
JP2004263084A2004-09-24
JP2011099078A2011-05-19
Attorney, Agent or Firm:
Yukihisa Goto