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1. (WO2018221276) RETARDATION FILM AND PRODUCTION METHOD

Pub. No.:    WO/2018/221276    International Application No.:    PCT/JP2018/019363
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Sat May 19 01:59:59 CEST 2018
IPC: G02B 5/30
B29C 47/14
B29C 55/02
C08J 5/18
C08L 53/02
Applicants: ZEON CORPORATION
日本ゼオン株式会社
Inventors: ASADA, Takeshi
浅田 毅
Title: RETARDATION FILM AND PRODUCTION METHOD
Abstract:
A retardation film and a production method therefor, said retardation film: comprising a resin C including a copolymer P including a polymerization unit A and a polymerization unit B; and including a phase-separated structure exhibiting structural birefringence. The phase-separated structure: includes a phase having the polymerization unit A as the main component thereof and a phase having the polymerization unit B as the main component thereof; and has an NZ coefficient greater than 0 and less than 1. Ideally, the phase-separated structure has a lamellar, cylindrical, or spheroid form and the inter-phase distance in the phase-separated structure is no more than 200 nm.