Broad band-cholesteric liquid crystal film and process for...

Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Polymerizing – cross-linking – or curing

Reexamination Certificate

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Details

C430S020000, C522S002000, C349S115000, C349S176000, C252S299010, C428S001300, C294S143000

Reexamination Certificate

active

10542065

ABSTRACT:
A broad band cholesteric liquid crystal film of the present invention comprises a cholesteric liquid crystal film obtained by polymerizing a liquid crystal mixture containing a polymerizable mesogen compound (a), a polymerizable chiral agent (b) and a photopolymerization initiator (c) between two substrates with ultraviolet light, and has a reflection bandwidth of 200 nm or more. The broad band cholesteric liquid crystal film of the present invention has a broad reflection band and is excellent in durability.

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Japanese Office Action dated May 8, 2007 (mailing date), issued in corresponding Japanese Patent Application No. 2003-004346.

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