REMOVABLE WATER-DISPERSIBLE ACRYLIC ADHESIVE COMPOSITION, AND ADHESIVE SHEET

WIPO Patent Application WO/2013/058186

A1

　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 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 object is adhered under high humidity conditions (prevention of whitening-causing contamination). Also provided is an adhesive sheet having an adhesive layer made from said adhesive composition. This removable water-dispersible acrylic adhesive composition is characterized by containing an acrylic emulsion-type polymer comprising, as a starting material monomer: (i) 70-99.5 wt.% of a (meth) acrylic acid alkyl ester and (ii) 0.5-10wt% of an carboxyl group-containing unsaturated monomer; a nonaqueous cross-linking agent; and an ionic compound.

AMANO TATSUMI (JP)
MORIMOTO YU (JP)
MITSUI KAZUMA (JP)
YONEZAKI KOUSUKE (JP)
TAKASHIMA KYOKO (JP)

PCT/JP2012/076448

April 25, 2013

October 12, 2012

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NITTO DENKO CORP (JP)

C09J133/00; C09J7/02; C09J9/00; C09J11/04; C09J11/06; C09J133/02; C09J133/06

JP2008239965A	2008-10-09
JP2007217660A	2007-08-30
JP2006232882A	2006-09-07
JP2007217594A	2007-08-30
JP2010163526A	2010-07-29
JP2010270194A	2010-12-02

UNIUS PATENT ATTORNEYS OFFICE (JP)
Patent business corporation ユニアス international patent firm (JP)

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