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Title:
WATER-DISPERSIBLE ACRYLIC ADHESIVE COMPOSITION, ADHESIVE LAYER, AND ADHESIVE SHEET
Document Type and Number:
WIPO Patent Application WO/2013/058184
Kind Code:
A1
Abstract:
 Provided is a water-dispersible acrylic adhesive composition capable of forming an adhesive layer, which, when peeled, can prevent the buildup of electrostatic charge in the object to which the film is adhered (antistatic properties), has outstanding removability and can prevent an increase in peel force (adhesive strength) over time, while at the same time having excellent appearance (reduced visual defects caused by recesses and the like) and less contamination with respect to the object to which the film is adhered, in particular the prevention of whitening in the object to which the film is adhered when subjected to high humidity conditions (prevention of whitening-causing contamination). This water-dispersible acrylic adhesive composition is characterized by containing: an ionic compound; and an acrylic emulsion polymer comprising, as monomer components, (i) (meth) acrylic acid alkyl ester, (ii) a carboxyl group-containing unsaturated monomer, and (iii) at least one monomer selected from a group consisting of methyl methacrylate, vinyl acetate and diethylacrylamide. The content of the (meth)acrylic acid alkyl ester (i) is 70-99.5wt.% with respect to the total quantity of monomer components.

Inventors:
AMANO TATSUMI (JP)
MORIMOTO YU (JP)
MITSUI KAZUMA (JP)
YONEZAKI KOUSUKE (JP)
TAKASHIMA KYOKO (JP)
Application Number:
PCT/JP2012/076444
Publication Date:
April 25, 2013
Filing Date:
October 12, 2012
Export Citation:
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Assignee:
NITTO DENKO CORP (JP)
International Classes:
C09J133/00; C09J7/22; C09J7/38; C09J11/04; C09J133/04; C09J171/00; C09J183/12
Domestic Patent References:
WO2006123638A12006-11-23
Foreign References:
JP2011127130A2011-06-30
JP2006342191A2006-12-21
JP2007063298A2007-03-15
JP2010202692A2010-09-16
JP2011012267A2011-01-20
JP2008274255A2008-11-13
JP2009242745A2009-10-22
JP2009242633A2009-10-22
JPH08337764A1996-12-24
JPH11124552A1999-05-11
JP2004534893A2004-11-18
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
Patent business corporation ユニアス international patent firm (JP)
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Claims: