Title:
光学フィルム用表面保護フィルム
Document Type and Number:
Japanese Patent JP6970169
Kind Code:
B2
Abstract:
To provide a surface protective film for an optical film, which has excellent antistatic performance, corrosion resistance and low contamination property.SOLUTION: The surface protective film has an adhesive layer formed from an adhesive composition comprising an acrylic polymer and an antistatic agent. The acrylic polymer is a (meth)acrylic polymer prepared by copolymerizing (A) at least one (meth)acrylate monomer having 1 to 14 carbon atoms in an alkyl group and (B) at least one (meth)acrylic monomer having a hydroxyl group without incorporating a copolymerizable monomer having a carboxyl group, and has an acid value of 0.0. The antistatic agent is an ionic compound having a melting point of 30°C or higher and 80°C or lower and being solid at 30°C, excluding an alkali metal salt. The adhesive composition further contains, as a crosslinking agent, a bifunctional or tri- or higher functional isocyanate compound. The adhesive layer has a gel fraction of 95 to 100% and a surface resistance value of 5.0×10Ω/(unit square) or less.SELECTED DRAWING: None
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Inventors:
Takeshi Nagakura
Ryusuke Shimaguchi
Ryusuke Shimaguchi
Application Number:
JP2019225331A
Publication Date:
November 24, 2021
Filing Date:
December 13, 2019
Export Citation:
Assignee:
Fujimori Industry Co., Ltd.
International Classes:
C09J7/38; C09J7/22; C09J11/06; C09J133/06; G02B5/30
Domestic Patent References:
| JP2010180378A | ||||
| JP2010229321A | ||||
| JP2009019162A | ||||
| JP2009019161A | ||||
| JP2009251281A | ||||
| JP2009079205A | ||||
| JP2010066755A | ||||
| JP2011154267A | ||||
| JP2008207356A | ||||
| JP2009155586A | ||||
| JP2005325250A |
Attorney, Agent or Firm:
Field Saki Satoshi
Kazunori Onami
Tomoyuki Teihiro
Kazunori Onami
Tomoyuki Teihiro