Title:
粘着シート、及び、光学部材
Document Type and Number:
Japanese Patent JP6599619
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an adhesive sheet which has an antistatic layer using a specific raw material on a first surface of a base material and an adhesive layer using a specific raw material on a second surface of the base material, and thereby is excellent in antistatic properties, temporal stability of surface resistivity, whitening resistance, appearance characteristics, pickup properties and removability, and can also suppress whitening (whitening caused by moisture absorption) during storage in a humid condition.SOLUTION: An adhesive sheet has a base material having a first surface and a second surface, an antistatic layer provided on the first surface of the base material, and an adhesive layer on the second surface of the base material. The antistatic layer is formed of an antistatic agent composition which contains a polyaniline sulfonic acid as a conductive polymer component, a polyester resin as a binder, and an isocyanate crosslinking agent as a crosslinking agent. The adhesive layer is formed of a water dispersion type acrylic adhesive composition containing: an acryl emulsion-based polymer which contains at least (meth)acrylic acid alkyl ester (A) of 70-99.5 mass% and a carboxyl group-containing unsaturated monomer (B) of 0.5-10 mass%, as monomer components, and is polymerized using a reactive emulsifier containing a radical-polymerizable functional group in the molecule; and a compound represented by formula (I): R-(PO)a-(EO)b-(PO)c-R. In the formula (I), Rand Rrepresent a linear or a branched alkyl group or a hydrogen atom; PO represents an oxypropylene group; and EO represents an oxyethylene group. Each of a, b and c is a positive integer. An addition form of EO and PO is a block type.SELECTED DRAWING: None
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Inventors:
Tatsumi Amano
Kenichi Kataoka
Kenichi Kataoka
Application Number:
JP2015029023A
Publication Date:
October 30, 2019
Filing Date:
February 17, 2015
Export Citation:
Assignee:
NITTO DENKO CORPORATION
International Classes:
C09J7/29; B32B27/00; B32B27/18; C09D7/63; C09D7/65; C09D167/00; C09J7/20; C09J7/38; C09J11/08; C09J133/06; G02B5/30
Domestic Patent References:
| JP2011241386A | ||||
| JP2000079662A | ||||
| JP2015027766A | ||||
| JP10330650A | ||||
| JP2012183811A | ||||
| JP2015027764A | ||||
| JP2005238651A | ||||
| JP2012016876A | ||||
| JP2011020349A | ||||
| JP2004338379A | ||||
| JP2007262318A |
Foreign References:
| US20150037573 |
Attorney, Agent or Firm:
Patent Business Corporation Unias International Patent Office