PRESSURE-SENSITIVE ADHESIVE SHEET AND OPTICAL MEMBER

Title:

PRESSURE-SENSITIVE ADHESIVE SHEET AND OPTICAL MEMBER

Document Type and Number:

Japanese Patent JP2015030770

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a pressure-sensitive adhesive sheet (surface protective film) which has a pressure-sensitive adhesive layer excellent in adhesion characteristics (adhesiveness, light adhesiveness in fast peeling, and removability) as well as in antistatic property, and has a topcoat layer excellent in resistance to whitening, and the like, by using a pressure-sensitive adhesive composition having a long pot life.SOLUTION: The pressure-sensitive adhesive sheet includes a pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition on one surface of a support film, in which the support film includes a topcoat layer on a surface opposite to the surface having the pressure-sensitive adhesive layer. The topcoat layer contains wax as a sliding agent and a polyester resin as a binder. The adhesive composition comprises: a (meth)acrylic polymer comprising at least a (meth)acrylic monomer having an alkyl group having 1 to 14 carbon atoms and a (meth)acrylic monomer having a hydroxyl group, as raw material monomers; and a catalyst including iron as an active center; and the composition contains the (meth)acrylic monomer having a hydroxyl group by 7 parts by weight or more with respect to 100 parts by weight of the (meth)acrylic monomer having an alkyl group having 1 to 14 carbon atoms.

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Inventors:

KATAOKA KENICHI
AMANO TATSUMI
NIIMI KENJIRO
HARUTA HIROMUNE

Application Number:

JP2013159785A

Publication Date:

February 16, 2015

Filing Date:

July 31, 2013

Export Citation:

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Assignee:

NITTO DENKO CORP

International Classes:

B32B27/00; B32B27/30; B32B27/36; C09D167/00; C09D191/06; C09J7/29; C09J133/14; C09J183/06; C09J183/12; G02B5/30

Domestic Patent References:

JP2002155158A	2002-05-28
JP2004284331A	2004-10-14
JP2002155158A	2002-05-28
JP2004284331A	2004-10-14

Foreign References:

US20130158199A1	2013-06-20
US20130158199A1	2013-06-20

Attorney, Agent or Firm:

Patent business corporation ユニアス international patent firm

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