Radiation imagery chemistry: process – composition – or product th – Holographic process – composition – or product
Patent
1997-05-06
2000-04-04
Angebranndt, Martin
Radiation imagery chemistry: process, composition, or product th
Holographic process, composition, or product
430 2, 4302801, 4302811, 4302731, 359 3, 522 4, 522 25, 522 27, 522 28, 522 29, G03H 100, G03F 7004
Patent
active
060459530
ABSTRACT:
A photosensitive recording material comprising an alicyclic, solvent-soluble, thermosetting epoxy oligomer capable of cationic polymerization, the oligomer being of a specified structure, an aliphatic monomer having at least one ethylenically unsaturated bond, the monomer being liquid at normal temperature and pressure, having a boiling point of 100.degree. C. or above at normal pressure and being capable of radical polymerization, a photoinitiator selected from the group consisting of i) a first photoinitiator capable of simultaneously generating a radical species that activates radical polymerization and a Br.o slashed.nsted acid or Lewis acid that activates cationic polymerization, upon exposure to actinic radiation, and ii) a second photoinitiator comprised of a radical polymerization photoinitiator capable of generating a radical species that activates radical polymerization upon exposure to actinic radiation and a cationic polymerization photoinitiator capable of generating a Br.o slashed.nsted acid or Lewis acid that activates cationic polymerization upon exposure to actinic radiation, and a spectral sensitizer that sensitizes the first photoinitiator or second photoinitiator; the aliphatic monomer being mixed in an amount of from 20 parts by weight to 80 parts by weight based on 100 parts by weight of the alicyclic epoxy oligomer. This photosensitive recording material is highly effective for producing a volume type phase hologram having superior diffraction efficiency, transparency, weatherability such as thermal resistance, and chemical stability.
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Database WPI, Derwent Publications ltd., London, GB; AN 93-162570 & JP-A-05-094-014 (Nissan Motor Co., Ltd), Apr. 16, 1993.
Ito Hiromitsu
Ohe Yasushi
Watanabe Niro
Angebranndt Martin
Toppan Printing Co. Ltd.
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