Title:
光学フィルム用粘着剤層
Document Type and Number:
Japanese Patent JP7078686
Kind Code:
B2
Abstract:
To provide an adhesive layer for an optical film which is used for bonding an optical film assembled into an image display device and has excellent heat resistance and durability.SOLUTION: An adhesive layer for an optical film is obtained by crosslinking an adhesive composition for an optical film comprising an acrylic polymer and a difunctional or multi-functional epoxy compound as a crosslinking compound. The acrylic polymer comprises a copolymer which is prepared by copolymerizing (A) 100 pts.wt in total of at least two monomers selected from a monomer group consisting of an alkyl (meth)acrylate monomer with a C1-14 alkyl group, a (meth)acrylate monomer having an aromatic group, and a nitrogen-containing vinyl monomer, (B) 0.1 to 10.0 pts.wt of a carboxyl group-containing copolymerizable vinyl monomer, and (C) 0.05 to 4.5 pts.wt of a hydroxyl group-containing copolymerizable vinyl monomer and which has a Tg of -60°C or higher and -30°C or lower. The adhesive layer has a gel fraction of 60-90% and a thickness of 5-25 μm.SELECTED DRAWING: None
Inventors:
Takeshi Nagakura
Ryo Hasegawa
Hiroyuki Yoshida
Masayo Hishinuma
Fumie Suzuki
Kentaro Otsuga
Ryo Hasegawa
Hiroyuki Yoshida
Masayo Hishinuma
Fumie Suzuki
Kentaro Otsuga
Application Number:
JP2020170710A
Publication Date:
May 31, 2022
Filing Date:
October 08, 2020
Export Citation:
Assignee:
Fujimori Industry Co., Ltd.
International Classes:
C09J7/38; C09J133/06; G02B5/30; G02F1/1335
Domestic Patent References:
| JP2014198745A | ||||
| JP8209095A | ||||
| JP2011105918A | ||||
| JP2018124299A |
Foreign References:
| WO2014091927A1 |
Attorney, Agent or Firm:
田▲崎▼ 聡
Kazunori Onami
Tomoyuki Sadahiro
Kazunori Onami
Tomoyuki Sadahiro
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