粘着性組成物及び粘着性シート

Japanese Patent JP5416316

B2

Provided is an adhesive sheet having an adhesive layer formed of an adhesive composition that contains 100 parts by mass of a polyisobutylene-based resin (A) having a weight-average molecular weight of from 270,000 to 480,000, from 5 to 55 parts by mass of a polyisobutylene-based resin (B) having a weight-average molecular weight of from 100,000 to 250,000, and from 10 to 55 parts by mass of a hydrogenated petroleum resin (C) having a softening point of from 90 to 135°C; and provided is an adhesive sheet having at least one adhesive layer wherein the probe tack of the adhesive layer, as measured at a peel rate of 600 mm/min according to JIS-Z0237 (1991), has two maximum values and wherein the first maximum value P1 detected first is at least 4.0 N and the ratio of the second maximum value P2 detected secondarily to the first maximum value P1 [P2/P1] is from 0.25 to 1.50. The adhesive sheets have excellent adhesion force and retention force, can prevent occurrence of zipping, have a low moisture vapor transmission rate, are excellent in transparency and can retard outgas generation.

Kazue Uemura
Yoshitomo Ono
Yumiko Amino
Satoshi Kawada
Hanako Ikeda

JP2013522914A

February 12, 2014

June 27, 2012

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LINTEC CORPORATION

C09J123/22; C09J7/10; C09J11/00; C09J157/02; H01L51/50; H05B33/04

JP2011231313A	2011-11-17
JP2011132522A	2011-07-07
JP2009524705A	2009-07-02
JP2010072471A	2010-04-02
JPH09221649A	1997-08-26

WO2012032907A1	2012-03-15
WO2011062167A1	2011-05-26
WO2009148722A2	2009-12-10

Tamotsu Otani
Makoto Kataoka
Toshihide Ishihara

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