Title:
ADHESIVE FILM AND POLARIZER WITH ADHESIVE LAYER
Document Type and Number:
Japanese Patent JP2023116793
Kind Code:
A
Abstract:
To provide an adhesive film having both durability and reworkability without generating an error in a measurement value of a surface hardness of a laminate bonded with an optical member, and to provide a polarizer with an adhesive layer.SOLUTION: An acrylic polymer contains at least 40 pts.wt. or more of butylacrylate in the total amount of 100 pts.wt. of (1) a (meth)acrylic monomer as the main component, does not contain a carboxyl group-containing copolymerizable vinyl monomer, and has Tg of -35°C or more. An adhesive composition contains only 0.01-1.0 pt.wt. of an isocyanate compound as (3) a cross-linking agent of an acrylic polymer copolymerized with 0.1-10 pts.wt. of (2) a hydroxy group-containing copolymerizable vinyl monomer, and having an acid value of 0.1 or less and a weight average molecular weight of 1,000,000 or more, and contains 0.01-0.5 pt.wt. of a silane coupling agent. A gel fraction is 40-85%, a thickness of the adhesive layer is 1 μm-20 μm, and an adhesive force is 10 N/25 mm or less.SELECTED DRAWING: None
Inventors:
NAGAKURA TAKESHI
HASEGAWA RYO
YOSHIDA HIROYUKI
HISHINUMA AKIYO
HASEGAWA RYO
YOSHIDA HIROYUKI
HISHINUMA AKIYO
Application Number:
JP2023102345A
Publication Date:
August 22, 2023
Filing Date:
June 22, 2023
Export Citation:
Assignee:
FUJIMORI KOGYO CO
International Classes:
C09J7/38; C09J11/06; C09J133/06; C09J133/14
Attorney, Agent or Firm:
田▲崎▼ 聡
Onami Kazunori
Tomoyuki Sadahiro
Onami Kazunori
Tomoyuki Sadahiro
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