Invention Grant
- Patent Title: Pressure-sensitive adhesive, sheet for manufacturing an optical recording medium and optical recording medium
- Patent Title (中): 压敏粘合剂,用于制造光学记录介质的片材和光学记录介质
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Application No.: US13058405Application Date: 2009-06-25
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Publication No.: US08541087B2Publication Date: 2013-09-24
- Inventor: Naoki Taya , Masaharu Ito , Takashi Morioka
- Applicant: Naoki Taya , Masaharu Ito , Takashi Morioka
- Applicant Address: JP Tokyo
- Assignee: Lintec Corporation
- Current Assignee: Lintec Corporation
- Current Assignee Address: JP Tokyo
- Agency: Posz Law Group, PLC
- Priority: JP2008-209481 20080818
- International Application: PCT/JP2009/061630 WO 20090625
- International Announcement: WO2010/021201 WO 20100225
- Main IPC: G11B7/24
- IPC: G11B7/24

Abstract:
A sheet (1) for manufacturing an optical disc which includes a pressure-sensitive adhesive layer (11), having a peak temperature of a loss tangent not higher than −10° C. and a polar component (γPs) of the surface energy not smaller than 2.0 mJ/m2, and a protective sheet (12), is laminated on a data recording layer (3) (a laminate formed of a reflecting layer (31), a dielectric layer (32), a phase change layer (33) and a dielectric layer (32′)) that is formed on an optical disc substrate (2). The sheet for manufacturing an optical disk (1) allows obtaining an optical recording medium that is provided with the pressure-sensitive adhesive layer (11) that has high adhesion to the data recording layer (3) and does not peel readily off adjacent layers.
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