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1. (WO2018181715) PRESSURE-SENSITIVE ADHESIVE LAYER, ONE-SIDE-PROTECTED POLARIZING FILM HAVING PRESSURE-SENSITIVE ADHESIVE LAYER, IMAGE DISPLAY DEVICE, AND CONTINUOUS PRODUCTION METHOD THEREFOR

Pub. No.:    WO/2018/181715    International Application No.:    PCT/JP2018/013242
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Fri Mar 30 01:59:59 CEST 2018
IPC: C09J 133/08
B32B 27/00
B32B 27/30
C09J 7/29
C09J 7/38
C09J 11/04
C09J 11/06
G02B 5/30
Applicants: NITTO DENKO CORPORATION
日東電工株式会社
Inventors: MORIMOTO,Yu
森本 有
TOYAMA,Yusuke
外山 雄祐
FUJITA,Masato
藤田 雅人
EHARA,Suguru
江原 卓
Title: PRESSURE-SENSITIVE ADHESIVE LAYER, ONE-SIDE-PROTECTED POLARIZING FILM HAVING PRESSURE-SENSITIVE ADHESIVE LAYER, IMAGE DISPLAY DEVICE, AND CONTINUOUS PRODUCTION METHOD THEREFOR
Abstract:
The purpose of the present invention is to provide: a pressure-sensitive adhesive layer in which a defect due to a nano-slit can be inhibited, and which has an excellent antistatic function and reworkability; and a one-side-protected polarizing film having a pressure-sensitive adhesive layer which has that pressure-sensitive adhesive layer. The pressure-sensitive adhesive layer according to the present invention contains a (meth)acrylic polymer as a base polymer, wherein the (meth)acrylic polymer contains, as monomer units, an alkyl(meth)acrylate including an alkyl group having 2-12 carbon atoms, and methyl(meth)acrylate. The pressure-sensitive adhesive layer is characterized by satisfying formula (1). Abs(a): The peak absorbance derived from the antisymmetric stretching vibration of the C-O-C bond of methyl(meth)acrylate, in an IR measurement of the pressure-sensitive adhesive layer using a total reflection measurement method. Abs(b): The peak absorbance derived from the antisymmetric stretching vibration of the C-O-C bond of the alkyl(meth)acrylate, in an IR measurement of the pressure-sensitive adhesive layer using the total reflection measurement method. Abs(c): The lowest absorbance within the range of 800-900 cm-1, in an IR measurement of the pressure-sensitive adhesive layer using the total reflection measurement method.