Title:
PRESSURE-SENSITIVE ADHESIVE LAYER FOR OPTICAL FILM, PRESSURE-SENSITIVE ADHESIVE TYPE OPTICAL FILM, AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/048874
Kind Code:
A1
Abstract:
Disclosed is a pressure-sensitive adhesive layer for optical films which is formed by applying an aqueous dispersion type pressure-sensitive adhesive comprising an aqueous dispersion that comprises water and, dispersed therein, a polymer obtained by polymerizing a monomer in the presence of a surfactant and a free-radical polymerization initiator, and then drying the applied adhesive. The amount of the surfactant is 0.3-5 parts by weight per 100 parts by weight of the monomer. When the pressure-sensitive adhesive layer is allowed to stand in water at 23ºC for one week and to separate into water-insoluble components and water-soluble components, then the amount of the water-insoluble components is 95-99 wt.% of the pressure-sensitive adhesive layer and the amount of the surfactant contained in the water-soluble components is not more than 50 wt.% of the water-soluble components. The pressure-sensitive adhesive layer for optical films has high durability whereby the adhesive layer can be inhibited from foaming or peeling off even in a high-temperature high-humidity environment.
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Inventors:
INUI KUNIHIRO (JP)
HOSOKAWA TOSHITSUGU (JP)
ISHII TAKAAKI (JP)
SATAKE MASAYUKI (JP)
HOSOKAWA TOSHITSUGU (JP)
ISHII TAKAAKI (JP)
SATAKE MASAYUKI (JP)
Application Number:
PCT/JP2010/064927
Publication Date:
April 28, 2011
Filing Date:
September 01, 2010
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
INUI KUNIHIRO (JP)
HOSOKAWA TOSHITSUGU (JP)
ISHII TAKAAKI (JP)
SATAKE MASAYUKI (JP)
INUI KUNIHIRO (JP)
HOSOKAWA TOSHITSUGU (JP)
ISHII TAKAAKI (JP)
SATAKE MASAYUKI (JP)
International Classes:
B32B27/30; C09J7/10; C09J11/06; C09J133/04; C09J201/00; G02B5/30; G02F1/1335
Foreign References:
| JP2007171892A | 2007-07-05 | |||
| JP2007254721A | 2007-10-04 | |||
| JP2008069204A | 2008-03-27 | |||
| JP2009197222A | 2009-09-03 |
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
Patent business corporation ユニアス international patent firm (JP)
Patent business corporation ユニアス international patent firm (JP)
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