Title:
粘着剤組成物及びその利用
Document Type and Number:
Japanese Patent JP6848983
Kind Code:
B2
Abstract:
Provided is an adhesive composition which contains a vinyl polymer (A) and an acrylic adhesive polymer (B), and wherein: the vinyl polymer (A) has a glass transition temperature (Tg) of from 60°C to 200°C (inclusive) and a number-average molecular weight of from 500 to 10,000; and the vinyl polymer (A) is contained in an amount of from 0.5 part by mass to 60 parts by mass per 100 parts by mass of the acrylic adhesive polymer (B). If this adhesive composition is applied to a separator and then dried, thereby obtaining an adhesive layer, a first Tg that is the glass transition temperature of the entire adhesive layer is from -80°C to 10°C, and a second Tg that is the glass transition temperature calculated from a surface layer portion of the adhesive layer as determined by X-ray photoelectron spectroscopy is 40°C or higher, and is higher than the first Tg by 30°C or more.
Inventors:
Nobuyuki Takeya
Kenichi Nakamura
Yusuke Hashimoto
Kenichi Nakamura
Yusuke Hashimoto
Application Number:
JP2018555051A
Publication Date:
March 24, 2021
Filing Date:
December 07, 2017
Export Citation:
Assignee:
Toagosei Co., Ltd.
International Classes:
C09J157/00; C09J7/38; C09J133/00; C09J133/14
Domestic Patent References:
| JP2015160915A | ||||
| JP2015151432A | ||||
| JP2014005387A | ||||
| JP2014077096A | ||||
| JP2006301572A |
Foreign References:
| WO2012128294A1 | ||||
| WO2011118183A1 |
Attorney, Agent or Firm:
Kaiyu International Patent Office