Title:
PHOTOCURABLE COMPOSITION FOR PRESSURE-SENSITIVE ADHESIVE, PHOTOCURABLE PRESSURE-SENSITIVE ADHESIVE SHEET, LAMINATE AND ADHESIVE SHEET
Document Type and Number:
WIPO Patent Application WO/2007/052520
Kind Code:
A1
Abstract:
It relates to a composition for a photocurable pressure-sensitive adhesive, and relates to a photocurable pressure-sensitive adhesive sheet, laminate and adhesive sheet using the same. A photocurable composition for a pressure-sensitive adhesive of the invention contains (A) a polymer containing vinyl pyrrolidone as an essential constituent monomer unit and having a K value of 20 or more, (B) a compound having a (meth)acryloyl group and a hydrophilic group, and (C) a photoradical polymerization initiator and is characterized in that a weight ratio ((A)/(B)) of the component (A) to the component (B) is 90/10 to 25/75. According to the invention, the photocurable composition for a pressure-sensitive adhesive which is excellent in shear strength and adhesion strength, excellent in retention of adhesion under high temperature or high temperature and high humidity, in particular, excellent in curability under a high humid environment or on a water-absorbing or hydrophilic substrate and does not have any problem such as corrosion, and the photocurable pressure-sensitive adhesive sheet, laminate and adhesive sheet using the same can be provided.
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Inventors:
INATA KAZUMASA (JP)
Application Number:
PCT/JP2006/321320
Publication Date:
May 10, 2007
Filing Date:
October 26, 2006
Export Citation:
Assignee:
TOAGOSEI CO LTD (JP)
INATA KAZUMASA (JP)
INATA KAZUMASA (JP)
International Classes:
C09J4/02; B32B7/12; C09J7/38
Foreign References:
| JP2004502857A | 2004-01-29 | |||
| JP2004043554A | 2004-02-12 |
Attorney, Agent or Firm:
NOGUCHI, Yasuhiro (Urban Toranomon Bldg. 16-4, Toranomon 1-chom, Minato-ku Tokyo 01, JP)
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