| 摘要 |
PROBLEM TO BE SOLVED: To provide a base material for surface-protective films used for protecting the surface of a member, particularly an optical member from scratches or the like, that is not necessary to peel on inspection. SOLUTION: The film is composed of an imide resin and has an in-plane retardation of at most 10 nm and a thickness-direction retardation of at most 20 nm. COPYRIGHT: (C)2007,JPO&INPIT
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